CCNA 4 Final Exam v5.0 Exam Answers 2014

1 Why is it useful categorize networks by size when discussing network design?

Knowing the number of connected devices will define how many additional layers will be added to the three-tier hierarchical network design.

Knowing the number of connected devices will define how many multilayer switches will be necessary at the core layer.

A high-level redundancy at the access layer may be better implemented if the number of connected devices is know.

The complexity of networking infrastructure will vary according to the number of connected devices.*

2 Which two statements are true regarding a PPP connection between two Cisco routers? (Choose two.)

Only a single NCP is allowed between the two routers.


NCP terminates the link when data exchange is complete.


With CHAP authentication, the routers exchange plain text passwords.

LCP tests the quality of the link.*

LCP manages compression on the link.*

3 What is a disadvantage of a packet-switched network compared to a circuit-switched network?

fixed capacity

higher latency*


less flexibility


higher cost

4 Which statement describes a characteristic of dense wavelength division multiplexing (DWDM)?

it assigns incoming electrical signals to specific frequencies.

it can be used in long-range communications, like connections between ISPs.*


it enables bidirectional communications over one pair of copper cables.


it supports the SONET standard, but not the SDH standard.

5

Refer to the exhibit. A network administrator is troubleshooting the OSPF network. The 10.10.0.0/16 network is not showing up in the routing table of Router1. What is the probable cause of this problem?

The OSPF process is configured incorrectly on Router1.

There is an incorrect wildcard mask statement for network 10.10.0.0/16 on Router2.*


The OSPF process is not running on Router2.


The serial interface on Router2 is down.

6 The security policy in a company specifies that the staff in the sales department must use a VPN to connect to the corporate network to access the sales data when they travel to meet customers. What component is needed by the sales staff to establish a remote VPN connection?

VPN appliance


VPN concentrator

VPN client software*


VPN gateway

7 A network administrator is troubleshooting the dynamic NAT that is configured on router R2. Which command can the administrator use to see the total number of active NAT translations and the number of addresses that are allocated from the NAT pool?

R2# show ip nat translations


R2# clear ip nat translation


R2# show running-config

R2# show ip nat statistics*

8 Which three parts of a Frame Relay Layer 2 PDU are used for congestion control? (Choose three.)

the FECN bit*

the BECN bit*


the C/R bit


the 10-bit DLCI


the Extended Address field

the DE bit*

9 Which two statements correctly describe asymmetric encryption used with an IPsec VPN? (Choose two.)

The same encryption keys must be manually configured on each device.

Public key encryption is a type of asymmetric encryption.*

Encryption and decryption use a different key.*


A shared secret key is used to perform encryption and descryption.


AES is an example of an asymmetric encryption protocol.

10 Which WAN technology can serve as the underlying network to carry multiple types of network traffic such as IP, ATM, Ethernet, and DSL?

MPLS*


ISDN


Ethernet WAN


Frame Relay

11 Drag and droop

Place the options in the following order:

PAP Characteristics

uses two-way handshake

single challenge

weak authentication

clear text passwords

CHAP Characteristics

uses three-way handshake

repeated challenges

strong authentication

encrypted passwords

12 Which command can be used to check the information about congestion on a Frame Relay link?

show frame-relay lmi


show interfaces

show frame-relay pvc*


show frame-relay map

13 Which two statements describe remote access VPNs? (Choose two.)

Client software is usually required to be able to access the network.*

Remote access VPNs are used to connect entire networks, such as a branch office to headquarters.

Remote access VPNs support the needs of telecommuters and mobile users.*


A leased line is required to implement remote access VPNs.


End users are not aware that VPNs exists.

14

Refer to the exhibit. Which three steps are required to configure Multilik PPP on the HQ router? (Choose three.)

Bind the multilink bundle to the Fast Ethernet interface.


Enable PPP encapsulation on the multilink interface.

Assign the serial interfaces to the multilink bundle.*

Create and configure the multilink interface.*


Assign the Fast Ethernet interface to the multilink bundle

Enable PPP encapsulation on the serial interfaces.*

15 What are two examples of network problems that are found at the data link layer? (Choose two.)

incorrect interface clock rates


late collisions and jabber

framing errors*


electromagnetic interface

encapsulation errors*

16 What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

CHAP


ADSL

PPPoE*


LTE

17 What is required for a host to use an SSL VPN to connect to a remote network device?

The host must be connected to wired network.


A site-to-site VPN must be preconfigured.

A web browser must be installed on the host.*

VPN client software must be installed.

18

Refer to the exhibit. A network administrator has implemented the configuration in the displayed output. What is missing from the configuration that would be preventing OSPF routing updates from passing to the Frame Relay service provider?

The command to disable split horizon has not been issued.


The passive-interface command has not been issued on interface serial 0/1/0


The directly connected neighbor should have been identified by using static mapping.

The broadcast keyword has not been issued.*

19

Refer to the exhibit. An administrator is configuring NAT to provide Internet access to the inside network. After the configurtation is completed, users are unable to access the internet. What is the cause of the problem?

The inside and outside interfaces are backwards.


The ACL is referencing the wrong network address.

The NAT inside source command is referring to the wrong ACL.*


The NAT pool is using an invalid address range.

20 A company connects to one ISP via multiple connections. What is the name given to this type of connection?

multihomed


single-homed


dual-multihomed

dual-homed*

21

Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There is connectivity between this device and the device at 192.168.100.1.*


The average transmission time between the two hosts is 2 miliseconds.


This host does not have a default gateway configured.


The connectivity between these two hosts allows for videoconferencing calls.

There are 4 hops between this device and the device at 192.168.100.1.*

22 A network administrator is configuring a PPP link with the commands:

R1(config-if)# encapsulation ppp

R1(config-if)# ppp quality 70

What is the effect of these commands?

The NCP will send a message to the sending device if the link usage reaches 70 percent.

The PPP link will be closed down if the link quality drops below 70 percent.*

The LCP establishment phase will not start until the bandwidth reaches 70 percent or more.


The PPP link will not be established if more than 30 percent of options cannot be accepted.

23 Which IEEE standard defines the WiMax technology?

802.5


802.11

802.16*


802.3

24 Which three flows associated with consumer applications are supported by NetFlow collectors? (Choose three.)

accounting*

network monitoring*


error correction


bandwidth regulation


quality of service

billing*

25

 

Refer to the exhibit. What kind of NAT is being configured on R1?

NAT overload


dynamic NAT

port forwarding*


PAT

26

Place the options in the following order:

Outside global

- not scored -

Outside local

Inside global

- not scored -

Inside local

27 What is the default location for Cisco routers and switches to send critical logging events?

syslog server


virtual terminal

console port*


auxiliary port

28 In the data gathering process, which type of device will listen for traffic, but only gather traffic statistics?

SNMP agent

NetFlow collector*


syslog server


NMS

29 What is a characteristic of Frame Relay that allows customer data transmissions to dynamically “burst” over their CIR for short periods of time?

The combination of LMI status messages and Inverse ARP messages enables the CIR to be exceeded.

The physical circuits of the Frame Relay network are shared between subscribers and there may be times when unused bandwidth is available.*


BECN and FECN messages notify the router that the CIR can be exceeded.


Bursting is enabled by the configuration of multiple subinterfaces on one physical interface.

30 Which SNMP message type informs the network management system (NMS) immediately of certain specified events?

GET response


SET request


GET request

Trap*

31 Which statement is a characteristic of SNMP MIBs?

The SNMP agent uses the SNMP manager to access information within the MIB.


The MIB structure for a given device includes only variables that are specific to that device or vendor.


The MIB organizes variables in a flat manner.

The NMS must have access to the MIB in order for SNMP to operate properly.*

32 What benefit does NAT64 provide?

It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses.*


It allows sites to connect multiple IPv4 hosts to the Internet via the use of a single public IPv4 address.


It allows sites to use private IPv4 addresses, and thus hides the internal addressing structure form hosts on public IPv4 networks.

It allows sites to use private IPv6 addresses and translates them to global IPv6 addresses.

33 What is the expected behavior of an ADSL service?

The user can select the upload and download rates based on need.


The download and upload rates are the same.


The upload rate is faster than the download rate.

The download rate is faster than the upload rate.*

34 The DLCI number assigned to a Frame Relay circuit is to be manually added on a point-to-point link. Which three subinterface commands could be used to complete the configuration? (Choose three.)

frame-relay map ip ip-address dlci

frame-relay map ip ip-address dlci broadcast

no shutdown

ip address ip-address mask*

encapsulation farme-relay

bandwidth kilobits*

frame-relay interface dlci dlci*

35 A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necesary information? (Choose three.)

tracert


telnet

ping*


netsh interface ipv6 show neighbor

nslookup*

arp -a

ipconfig*

36

 

Refer to the exhibit. Router R1 was configured by a network administrator to use SNMP version 2. The following commands were issued:

R1(config)# snmp-server community batonaug ro SNMP_ACL

R1(config)# snmp-server contact Wayne World

R1(config)# snmp-server host 192.168.1.3 version 2c batonaug

R1(config)# ip access-list standard SNMP_ACL

R1(config-std-nacl)# permit 192.168.10.3

Why is the administrator not able to get any information from R1?

The snmp-server community command needs to include the rw keyword.


The snmp-server location command is missing.

There is a problem with the ACL configuration.*

The snmp-server enable traps command is missing.

37 Which broadband technology would be best for a small office that requires fast upstream connections?

DSL


Cable

fiber-to-the-home*


WiMax

38

 

Refer to the exhibit. The inside local IP address of PC-A is 192.168.0.200. What will be the inside global address of packets from PC-A after they are translated by R1?

192.168.0.1


172.16.0.1

209.165.200.225*


10.0.0.1


192.168.0.200

39 What is a type of VPN that is generally transparent to the end user?

remote access


public

site-to-site*


private

40 Which two statements about DSL are true? (Choose two.)

user connections are aggregated at a DSLAM located at the CO*


uses RF signal transmission


users are on a shared medium

local loop can be up to 3.5 miles (5.5km)*


physical and data link layers are defined by DOCSIS

41

 

Refer to the exhibit. Which three events will occur as a result of the configuration shown on R1? (Choose three.)

Only traffic that originates from the GigabitEthernet 0/1 interface will be monitored.*

Messages that are sent to the syslog server will be limited to levels 3 or lower.*

Messages that are sent to the syslog server will use 192.168.1.5 as the destination IP address.*


The syslog messages will contain the IP address the GigabitEthernet 0/1 interface.


Messages that are sent to the syslog server will be limited to levels 3 and higher.


For multiple occurrences of the same error, only the first three messages will be sent to the server.

42 Which two characteristics describe time-division multiplexing? (Choose two.)

Traffic is allocated bandwidth across a single wire based on preassigned time slots.*


Bandwidth is allocated to channels based on whether a station has data to transmit.


Encoding technology provides high data throughput in a minimum RF spectrum by supporting parallel data transmission.

Data capacity across a single link increases as bits from multiple sources are transmitted using interleaved slices of time.*


Depending on the configured layer 2 protocol, data is transmitted across two or more channels via the use of time slots.

43 Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

TDR


DTX cable analyzer

NAM*


digital multimeter

portable network analyzer*

44 Which circumstance would result in an enterprise deciding to implement a corporate WAN?

when its employees become distributed across many branch locations*


when the enterprise decides to secure its corporate LAN


when the network will span multiple buildings


when the number of employees exceeds the capacity of the LAN

45 Which algorithm is considered insecure for use in IPsec encryption?

RSA

3DES*

SHA-1


AES

46 What is one advantage to designing networks in bulding block fashion for large companies?

fewer required physical resources


increased network access time


coarse security control

failure isolation*

47 Which two technologies are implemented by organizations to support teleworker remote connections? (Choose two.)

CMTS

VPN*

CDMA

IPsec*


DOCSIS

48 A branch office uses a leased line to connect to the corporate network. The lead network engineer confirms connectivity between users in the branch office, but none of the users can access corporate headquarters. System logs indicate that nothing has changed in the branch office network. What should the engineer consider next to resolve this network outage?

The network technician for the branch office should troubleshoot the switched infrastructure.

The server administrator in the branch office should reconfigured the DHCP server.

The service provider for the branch office should troubleshoot the issue starting from the point of demarcation.*


The system administartor in the branch office should reconfigure the default gateway on the user PCs.

49

CCNA 4 Final Exam v5.0 Exam Answers 2014

CCNA 4 Chapter 9 v5.0 Exam Answers 2014

1. Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?

syslog records and messages

the network performance baseline


debug output and packet captures


network configuration files

2. A team of engineers has identified a solution to a significant network problem. The proposed solution is likely to affect critical network infrastructure components. What should the team follow while implementing the solution to avoid interfering with other processes and infrastructure?

change-control procedures


one of the layered troubleshooting approaches


knowledge base guidelines


syslog messages and reports

3. After which step in the network troubleshooting process would one of the layered troubleshooting methods be used?

documenting symptoms


determining ownership


narrowing the scope

gathering symptoms from suspect devices

4. A user reports that the workstation cannot connect to a networked printer in the office in order to print a report created with word processing software. Which troubleshooting action by the helpdesk technician would follow the divide-and-conquer approach?

Ask the user to launch the web browser.


Ask the user to save the working document.

Ask the user to issue the ipconfig command.


Ask the user to unplug and reattach the network cable.

5. A network engineer is troubleshooting a network problem and can successfully ping between two devices. However, Telnet between the same two devices does not work. Which OSI layers should the administrator investigate next?

all of the layers

from the network layer to the application layer


from the network layer to the physical layer


only the network layer

6. Which troubleshooting method begins by examining cable connections and wiring issues?

top-down

bottom-up


substitution


divide-and-conquer

7.



Refer to the exhibit. Which two statements describe the results of entering these commands?(Choose two.)

R1 will send system messages of levels 0 (emergencies) to level 4 (warnings) to a server.


R1 will not send critical system messages to the server until the command debug all is entered.


R1 will reset all the warnings to clear the log.


R1 will output the system messages to the local RAM.

The syslog server has the IPv4 address 192.168.10.10.

8. An administrator is troubleshooting an Internet connectivity problem on a router. The output of the show interfaces gigabitethernet 0/0 command reveals higher than normal framing errors on the interface that connects to the Internet. At what layer of the OSI model is the problem likely occurring?

Layer 1

Layer 2


Layer 3


Layer 4


Layer 7

9. Users report that the new web site http://www.company1.biz cannot be accessed. The helpdesk technician checks and verifies that the web site can be accessed with http://www.company1.biz:90. Which layer in the TCP/IP model is involved in troubleshooting this issue?

application

transport


internet


network access

10. A user reports that after an OS patch of the networking subsystem has been applied to a workstation, it performs very slowly when connecting to network resources. A network technician tests the link with a cable analyzer and notices that the workstation sends an excessive number of frames smaller than 64 bytes and also other meaningless frames. What is the possible cause of the problem?

cabling faults

corrupted NIC driver


Ethernet signal attenuation


corrupted application installation

11. A network administrator is configuring SSH on a router. When verifying the configuration, the administrator notices that the SSH connection requests fail, but the Telnet connection requests from the same workstation are successful. Which two parts of the router configuration should be checked to try to locate the problem? (Choose two.)

The ip access-class command is missing.


The password is misconfigured on the console line.

The transport input command is incorrect on the vty lines.


A standard ACL is possibly blocking the workstation from access to the router.

An extended ACL that is referencing the port argument for SSH is misconfigured.

12. A user in a large office calls technical support to complain that a PC has suddenly lost connectivity to the network. The technician asks the caller to talk to nearby users to see if other machines are affected. The caller reports that several immediate neighbors in the same department have a similar problem and that they cannot ping each other. Those who are seated in other departments have connectivity. What should the technician check as the first step in troubleshooting the issue?

the power outlet to the PC that is used by the caller


the trunks between switches in the wiring closet

the status of the departmental workgroup switch in the wiring closet


the cable that connects the PC of the caller to the network jack


the cable connection between a PC and a network outlet that is used by a neighbor

13. After cables were reconnected to a switch in a wiring closet, several PCs that had been previously configured manually can no longer access resources outside the local network. The PC configurations were not altered in the process and resources on the local network can still be accessed. What is a possible cause of the problem?

The cabling to the PCs is faulty.

The PCs are no longer on the correct VLAN.


The DHCP server has been misconfigured.


The DNS configuration on the PCs is incorrect.

14.



Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There is connectivity between this device and the device at 192.168.100.1.


The connectivity between these two hosts allows for videoconferencing calls.

There are 4 hops between this device and the device at 192.168.100.1.


The average transmission time between the two hosts is 2 miliseconds.


This host does not have a default gateway configured.

15. Fill in the blank.

Use the “ ARP   ” cache to verify IPv4 address to Layer 2 Ethernet address mappings on a host computer.

16. Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

digital multimeter


TDR

NAM

portable network analyzer


DTX cable analyzer

17. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

ipconfig


telnet

ping


arp -a

nslookup


tracert


netsh interface ipv6 show neighbor

18. A company is setting up a web site with SSL technology to protect the authentication credentials required to access the web site. A network engineer needs to verify that the setup is correct and that the authentication is indeed encrypted. Which tool should be used?

baselining tool


cable analyzer

protocol analyzer


fault-management tool

19. In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?

Determine ownership.

Narrow the scope.


Gather information.


Document the symptoms.


Determine the symptoms.

20. A network technician is troubleshooting an email connection problem. Which question to the end-user will provide clear information to better define the problem?

How big are the emails you tried to send?

When did you first notice your email problem?


Is your email working now?


What kind of equipment are you using to send emails?

21. A network engineer issues the show cdp neighbor command on several network devices during the process of network documentation. What is the purpose of performing this command?

to obtain information about directly connected Cisco devices 


to check the networks that are advertised by the neighboring routers


to verify the network addresses that are attached to the network devices


to check the connectivity of PCs that are connected to the network devices

22.



Refer to exhibit. A network engineer is troubleshooting a WAN connectivity problem. A ping to a remote router is successful and an attempt to telnet to the same router displays the exhibited output. What does the output verify?

A Telnet password has not been configured on the remote router.

The transport layer is connecting successfully.


The web server service is password protected.


The remote router IPv6 address is incorrect.

23. When should a network performance baseline be measured?

after normal work hours to reduce possible interruptions

during normal work hours of an organization 


when a denial of service attack to the network is detected and blocked


immediately after the main network devices restarted

24. Which number represents the most severe level of syslog logging?

7

0


1


10

25.

Place the options in the following order:

[+] CiscoView

[+] What’s Up Gold

[+] HP OpenviewBTO

[#] SolarWinds LAN surveyor

[#] CyberGauge software

[*] Internet search engines

[*] Cisco Tools & Resources web site

[+] Order does not matter within this group.

[#] Order does not matter within this group.

[*] Order does not matter within this group.

CCNA 4 Chapter 9 v5.0 Exam Answers 2014

CCNA 4 Chapter 8 v5.0 Exam Answers 2014

1.



Refer to the exhibit. Which two conclusions can be drawn from the syslog message that was generated by the router? (Choose two.)

This message resulted from an unusual error requiring reconfiguration of the interface.


This message indicates that the interface should be replaced.

This message is a level 5 notification message.

This message indicates that service timestamps have been configured.


This message indicates that the interface changed state five times.

2. A network technician has issued the service timestamps log datetime command in the configuration of the branch router. Which additional command is required to include the date and time in logged events?

Branch1(config)# service timestamps log uptime

Branch1# clock set 08:00:00 05 AUG 2013


Branch1(config)# service timestamps debug datetime


Branch1# copy running-config startup-config

3.



Refer to the exhibit. From what location have the syslog messages been retrieved?

syslog server


syslog client

router RAM


router NVRAM

4.



Refer to the exhibit. What does the number 17:46:26.143 represent?

the time passed since the syslog server has been started

the time when the syslog message was issued


the time passed since the interfaces have been up


the time on the router when the show logging command was issued

5. What are SNMP trap messages?

messages that are used by the NMS to query the device for data

unsolicited messages that are sent by the SNMP agent and alert the NMS to a condition on the network


messages that are used by the NMS to change configuration variables in the agent device


messages that are sent periodically by the NMS to the SNMP agents that reside on managed devices to query the device for


data

6. How can SNMP access be restricted to a specific SNMP manager?

Use the snmp-server community command to configure the community string with no access level.


Specify the IP address of the SNMP manager by using the snmp-server host command.


Use the snmp-server traps command to enable traps on an SNMP manager.

Define an ACL and reference it by using the snmp-server community command.

7. A network administrator issues two commands on a router:

R1(config)# snmp-server host 10.10.50.25 version 2c campus

R1(config)# snmp-server enable traps

What can be concluded after the commands are entered?

No traps are sent, because the notification-types argument was not specified yet.


Traps are sent with the source IP address as 10.10.50.25.

If an interface comes up, a trap is sent to the server.


The snmp-server enable traps command needs to be used repeatedly if a particular subset of trap types is desired.

8. What is a difference between SNMP and NetFlow?

Unlike NetFlow, SNMP uses a “push”-based model.

NetFlow collects more detailed traffic statistics on IP networks than SNMP does.


SNMP only gathers traffic statistics, whereas NetFlow can also collect many other performance indicators, such as interface


errors and CPU usage.


Unlike NetFlow, SNMP may be used to provide IP accounting for billing purposes.

9. How does NetFlow function on a Cisco router or multilayer switch?

Netflow captures and analyzes traffic.

One user connection to an application exists as two NetFlow flows.


On 2960 switches, Netlow allows for data export.


NetFlow does not consume any additional memory.

10. Which type of information can an administrator obtain with the show ip cache flow command?

the NetFlow version that is enabled


whether NetFlow is configured on the correct interface and in the correct direction


the configuration of the export parameters

the protocol that uses the largest volume of traffic

11. What is the most common purpose of implementing NetFlow in a networked environment?

to support accounting and monitoring with consumer applications


to actively capture traffic from networked devices


to monitor live data usage and to control traffic flow with set messages


to passively capture changing events that occur in the network and to perform after-the-fact-analysis

12. Which destination do Cisco routers and switches use by default when sending syslog messages for all severity levels?

RAM


NVRAM


nearest syslog server

console

13. Which SNMP feature provides a solution to the main disadvantage of SNMP polling?

SNMP community strings


SNMP set messages


SNMP get messages

SNMP trap messages

14. Which statement describes SNMP operation?

A get request is used by the SNMP agent to query the device for data.

A set request is used by the NMS to change configuration variables in the agent device.


An NMS periodically polls the SNMP agents that are residing on managed devices by using traps to query the devices for data.


An SNMP agent that resides on a managed device collects information about the device and stores that information remotely in the MIB that is located on the NMS.

15. A network administrator has issued the logging trap 4 global configuration mode command. What is the result of this command?

After four events, the syslog client will send an event message to the syslog server.


The syslog client will send to the syslog server any event message that has a severity level of 4 and higher.


The syslog client will send to the syslog server event messages with an identification trap level of only 4.

The syslog client will send to the syslog server any event message that has a severity level of 4 and lower.

16. When logging is used, which severity level indicates that a device is unusable?

Critical – Level 2


Alert – Level 1

Emergency-Level 0 


Error-Level 3

17.



Refer to the exhibit. While planning an upgrade, a network administrator uses the Cisco NetFlow utility to analyze data flow in the current network. Which protocol used the greatest amount of network time?

TCP-FTP


TCP-Telnet


UDP-DNS


TCP-other

UDP-other

18. Which two statements describe items to be considered in configuring NetFlow? (Choose two.)

Netflow requires both management and agent software.


NetFlow can only be used if all devices on the network support it.

Netflow can only be used in a unidirectional flow.


Netflow requires UDP port 514 for notification messages.

Netflow consumes additional memory.

19. When SNMPvl or SNMPv2 is being used, which feature provides secure access to MIB objects?

message integrity


source validation

community strings


packet encryption

20.



Refer to the exhibit. What can be concluded from the produced output?

An ACL was configured to restrict SNMP access to an SNMP manager.


This is the output of the show snmp command without any parameters.


The system contact was not configured with the snmp server contact command

21. What are the most common syslog messages?

output messages that are generated from debug output

linkup and link down messages


those that occur when a packet matches a parameter condition in an access control list


error messages about hardware or software malfunctions

22. A network administrator has issued the snmp-server user adminl admin v3 encrypted auth md5 abc789 priv des 256 key99 command. What are two features of this command? (Choose two.)

It forces the network manager to log into the agent to retrieve the SNMP messages.


It restricts SNMP access to defined SNMP managers.

It uses the MD5 authentication of the SNMP messages.


It allows a network administrator to configure a secret encrypted password on the SNMP server.

It adds a new user to the SNMP group.

23. Fill in the blank.

The   “syslog”   protocol uses UDP port 514 and is the most common method to access system messages provided by networking devices.

24 When SNMPv1 or SNMPv2 is being used, which feature provides secure access to MIB objects?

packet encryption


source validation

community strings


message integrity

25  A network administrator has issued the snmp-server user admin1 admin v3 encrypted auth md5 abc789 priv des 256 key99 command. What are two features of this command? (Choose two.)

It uses the MD5 authentication of the SNMP messages.


It allows a network administrator to configure a secret encrypted password on the SNMP server.

It adds a new user to the SNMP group.


It restricts SNMP access to defined SNMP managers.


It forces the network manager to log into the agent to retrieve the SNMP messages.

CCNA 4 Chapter 8 v5.0 Exam Answers 2014

CCNA 4 Chapter 7 v5.0 Exam Answers 2014

1. How is “tunneling” accomplished in a VPN?

New headers from one or more VPN protocols encapsulate the original packets.


All packets between two hosts are assigned to a single physical medium to ensure that the packets are kept private.


Packets are disguised to look like other types of traffic so that they will be ignored by potential attackers.


A dedicated circuit is established between the source and destination devices for the duration of the connection.

2. Which two scenarios are examples of remote access VPNs? (Choose two.)

A toy manufacturer has a permanent VPN connection to one of its parts suppliers.


All users at a large branch office can access company resources through a single VPN connection.

A mobile sales agent is connecting to the company network via the Internet connection at a hotel.


A small branch office with three employees has a Cisco ASA that is used to create a VPN connection to the HQ.

An employee who is working from home uses VPN client software on a laptop in order to connect to the company network.

3.



Refer to the exhibit. Which IP address would be configured on the tunnel interface of the destination router?

172.16.1.1

172.16.1.2


209.165.200.225


209.165.200.226

4. Which statement correctly describes IPsec?

IPsec works at Layer 3, but can protect traffic from Layer 4 through Layer 7.


IPsec uses algorithms that were developed specifically for that protocol.


IPsec implements its own method of authentication.


IPsec is a Cisco proprietary standard.

5. What is an IPsec protocol that provides data confidentiality and authentication for IP packets?

AH

ESP


RSA


IKE

6. Which three statements describe the building blocks that make up the IPsec protocol framework? (Choose three.)

IPsec uses encryption algorithms and keys to provide secure transfer of data.


IPsec uses Diffie-Hellman algorithms to encrypt data that is transferred through the VPN.


IPsec uses 3DES algorithms to provide the highest level of security for data that is transferred through a VPN.

IPsec uses secret key cryptography to encrypt messages that are sent through a VPN.


IPsec uses Diffie-Hellman as a hash algorithm to ensure integrity of data that is transmitted through a VPN.

IPsec uses ESP to provide confidential transfer of data by encrypting IP packets.

7. What key question would help determine whether an organization should use an SSL VPN or an IPsec VPN for the remote access solution of the organization?

Is a Cisco router used at the destination of the remote access tunnel?


What applications or network resources do the users need for access?


Are both encryption and authentication required?

Do users need to be able to connect without requiring special VPN software?

8. What is the purpose of a message hash in a VPN connection?

It ensures that the data cannot be duplicated and replayed to the destination.


It ensures that the data is coming from the correct source.

It ensures that the data has not changed while in transit.


It ensures that the data cannot be read in plain text.

9. A network design engineer is planning the implementation of a cost-effective method to interconnect multiple networks securely over the Internet. Which type of technology is required?

a dedicated ISP

a VPN gateway


a leased line


a GRE IP tunnel

10. What is one benefit of using VPNs for remote access?

lower protocol overhead

potential for reduced connectivity costs 


increased quality of service


ease of troubleshooting

11. Which statement describes a characteristic of IPsec VPNs?

IPsec can secure traffic at Layers 1 through 3.

IPsec works with all Layer 2 protocols.


IPsec encryption causes problems with routing.


IPsec is a framework of Cisco proprietary protocols

12. What is the purpose of the generic routing encapsulation tunneling protocol?

to support basic unencrypted IP tunneling using multivendor routers between remote sites


to provide fixed flow-control mechanisms with IP tunneling between remote sites

to manage the transportation of IP multicast and multiprotocol traffic between remote sites


to provide packet level encryption of IP traffic between remote sites

13. Which algorithm is an asymmetrical key cryptosystem?

3DES


DES


AES

RSA

14. A network design engineer is planning the implementation of an IPsec VPN. Which hashing algorithm would provide the strongest level of message integrity?

512-bit SHA


AES


SHA-1


MD5

15. What two encryption algorithms are used in IPsec VPNs? (Choose two.)

IKE


DH


PSK

3DES

AES

16. Which statement describes a feature of site-to-site VPNs?

Internal hosts send normal, unencapsulated packets.


VPN client software is installed on each host.


The VPN connection is not statically defined.


Individual hosts can enable and disable the VPN connection.

17. Which Cisco VPN solution provides limited access to internal network resources by utilizing a Cisco ASA and provides browser-based access only?

clientless SSL VPN 


IPsec


SSL


client-based SSL VPN

18. Which two algorithms use Hash-based Message Authentication Code for message authentication? (Choose two.)

AES


DES


3DES

MD5

SHA

19. Which function of IPsec security services allows the receiver to verify that the data was transmitted without being changed or altered in any way?

confidentiality


anti-replay protection

data integrity


authentication

20.

CCNA 4 Chapter 7 v5.0 Exam Answers 2014

CCNA 4 Chapter 6 v5.0 Exam Answers 2014

1. What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)

LTE

Frame Relay

leased lines


QoS


IPsec

2. Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.)

a deterministic media access method

channel bandwidth

modulation technique


VPN tunneling requirements


the separation of the voice and data transmissions

3. Which medium is used for delivering data via DSL technology through PSTN?

fiber

copper


radifrequency


wireless

4. A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?

satellite


DSL


WiMax

cable

5. What are twcharacteristics of a PPPoE configuration on a Cisccustomer router? (Choose two.)

The PPP configuration is on the dialer interface.


An MTU size of 1492 bytes is configured on the Ethernet interface.

The Ethernet interface does not have an IP address.


The customer router CHAP username and password are independent of what is configured on the ISP router.


The dialer pool command is applied tthe Ethernet interface tlink it tthe dialer interface.

6. Fill in the blank.

DOCSIS specifies the  ”MAC“  sub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.

7. Fill in the blank. Use only an acronym.

“PPPoE”   creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.

8. What functionality is required on routers tprovide remote workers with VoIP and videoconferencing capabilities?

PPPoE

QoS


VPN


IPsec

9. Which broadband wireless technology is based on the 802.11 standard?

CDMA

municipal Wi-Fi


UMTS


WiMAX

10. Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes t1492?

to enable CHAP authentication

to accommodate the PPPoE headers


to reduce congestion on the DSL link


to establish a secure tunnel with less overhead

11. Which standard specifies the channel frequencies and the deterministic access method of cable networks?

DOCSIS


802.16


LTE


WIMAX

12. Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)

VPN client software or VPN-enabled router

broadband Internet connection


VPN server or concentrator


authentication server


multifunction security appliance

13. In which layer of the TCP/IP protocol model does IPsec apply security to network data?

application


transport

internet


network


access

14. Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?

CDMA

S-CDMA


FDMA


TDMA

15. How is voice traffic affected when the customer uses ADSL technology?

No special equipment is needed to separate voice and data signals.


Voice traffic is interrupted if the ADSL service fails.


Voice signals are on a separate wire pair from ADSL signals.

ADSL signals can distortvoice transmissions.

16. Which technology provides a secure connection between a SOHO and the headquarters office?

PPPoE


QoS


WiMax

VPN

17. What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)

The customer router CHAP username and password are independent of what is configured on the ISP router.

The PPP configuration is on the dialer interface.


An MTU size of 1492 bytes is configured on the Ethernet interface.

The Ethernet interface does not have an IP address.


The dialer pool command is applied to the Ethernet interface to link it to the dialer interface.

18. What advantage does DSL have compared to cable technology?

DSL upload and download speeds are always the same.

DSL is not a shared medium.


DSL is faster.


DSL has no distance limitations.

19. What are two disadvantages of employing teleworkers in an organization? (Choose two.)

slower customer service response times


increased usage of sick or vacation days

increased difficulty of tracking task progress


increase in office expenses

the need to implement a new management style

20. 

Place the options in the following order:

WiMax

Cellular/Mobile

Satellite

– not scored -

CCNA 4 Chapter 6 v5.0 Exam Answers 2014

CCNA 4 Chapter 5 v5.0 Exam Answers 2014

1 Typically, which network device would be used to perform NAT for a corporate environment?

DHCP server


host device

router


server


switch

2 What is the group of public IPv4 addresses used on a NAT-enabled router known as?

outside local addresses


inside local addresses

inside global addresses


outside global addresses

3 When NAT is employed in a small office, which address type is typically used for hosts on the local LAN?

private IP addresses


global public IP addresses


Internet-routable addresses


both private and public IP addresses

4 Which version of NAT allows many hosts inside a private network to simultaneously use a single inside global address for connecting to the Internet?

PAT


static NAT


dynamic NAT


port forwarding

5 Which type of NAT maps a single inside local address to a single inside global address?

dynamic

static


port address translation


overloading

6 Several key servers in an organization must be directly accessible from the Internet. What addressing policy should be implemented for these servers?

Use dynamic NAT to provide addresses for the servers.


Place all of the servers in their own Class C private subnet.


Use DHCP to assign addresses from the pool of Class B addresses.

Assign static internal addresses and public external addresses to each of the servers

7 What is a disadvantage of NAT?

There is no end-to-end addressing.


The router does not need to alter the checksum of the IPv4 packets.


The internal hosts have to use a single public IPv4 address for external communication.


The costs of readdressing hosts can be significant for a publicly addressed network.

8

CCNA 4 Chapter 5 v5.0 Exam Answers 2014

CCNA 4 Chapter 4 v5.0 Exam Answers 2014

1.

What is a characteristic of Frame Relay that provides more flexibility than a dedicated line?

Customers use dedicated circuits in increments of 64 kb/s.


Dedicated physical circuits are installed between each site.


The Frame Relay cloud allocates as much bandwidth as required to active PVCs to maintain the connection.

One router WAN port can be used to connect to multiple destinations.

2

What are the two major criteria that constitute the cost of a Frame Relay circuit? (Choose two.)

QoS


end-to-end connectivity

local loop

required bandwidth


circuit management fees

3

A router interface connects to a Frame Relay network over a preconfigured logical circuit that does not have a direct electrical connection from end to end. Which type of circuit is being used?

SVC


hub and spoke


full mesh


dedicated leased line

PVC

4

Which Frame Relay topology provides a connection from every site to every other site and maintains a high amount of reliability?

hub and spoke


partial mesh

full mesh


star

5

Which technology allows a Layer 3 IPv4 address to be dynamically obtained from a Layer 2 DLCI?

Neighbor Discovery


Address Resolution Protocol


Inverse Neighbor Discovery

Inverse Address Resolution Protocol

6

A network administrator has statically configured the LMI type on the interface of a Cisco router that is running Cisco IOS Release 11.2. If the service provider modifies its own LMI type in the future, what step must the network administrator take?

The network administrator must modify the keepalive time interval to maintain connectivity with the LMI type of the service provider.


The network administrator does not have to do anything, because all LMI types are compatible with one another.

The network administrator must statically set the LMI type to be compatible with the service provider.


The network administrator simply has to verify connectivity with the provider, because the router has an LMI autosensing feature that automatically detects the LMI type.

7

Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)

mapping of DLCIs to network addresses


error notification


congestion notification

simple flow control


exchange of information about the status of virtual circuits

8

Which parameter would be specified in a Frame Relay provider contract for a particular company?

DE


QoS


Inverse ARP enabled/disabled

CIR

9

Which three notification mechanisms are used when congestion is present in a Frame Relay network? (Choose three.)

DE

BECN


inverse ARP


CIR

FECN


DLCI

10

Why would a customer request a Frame Relay circuit with a CIR of zero?

to have a circuit used for network management traffic


to have a backup circuit for critical data transmissions


to have better QoS

to have a link with reduced costs


to have a circuit used for voice traffic

11

Which provider-negotiated parameter would allow a customer to send data above the rate of the bandwidth specified by the CIR?

DE


FECN


Be

Bc

12

What is the purpose of applying the command frame-relay map ip 10.10.1.2 110 broadcast?​

to support IPv6 traffic over the NBMA network by using DLCI 110


to allow Frame Relay frames to be broadcast over DLCI 110​


to allow Frame Relay frames to be broadcast toward host 10.10.1.2


to allow Frame Relay frames to be broadcast on all Frame Relay interfaces

to configure a device with a static Frame Relay map that also allows the forwarding of routing updates

13

Refer to the exhibit. Which two statements are correct? (Choose two.)

The IPv4 address of interface S0/1/0 on RA is 192.168.1.2.

The IPv4 address of interface S0/1/1 on RB is 192.168.1.2.

The DLCI that is attached to the VC on RA to RB is 62.


The DLCI that is attached to the VC on RB to RA is 62.


The Frame Relay map was set by using the command frame-relay map.

14

 

Refer to the exhibit. Which statement is true about Frame Relay traffic on R1?

Traffic that exits subinterface Serial 0/0/0.102 is marked with DLCI 201.


Traffic on Serial 0/0/0 is experiencing congestion between R1 and the Frame Switch.


Traffic that is mapped to DLCI 201 will exit subinterface Serial 0/0/0.201.


Frames that enter router R1 from a Frame Relay neighbor will have DLCI 201 in the frame header.

15

Which three actions can be taken to solve Layer 3 routing protocol router reachability issues when using Frame Relay? (Choose three.)

Use subinterfaces.


Disable Inverse ARP.

Use a full mesh topology.


Use the keyword cisco as the LMI type.

Disable split horizon.


Configure static DLCI mappings.

16

When would the multipoint keyword be used in Frame Relay PVCs configuration?

when multicasts must be supported


when using physical interfaces

when participating routers are in the same subnet


when global DLCIs are in use

17

A network engineer has issued the interface serial 0/0/1.102 point-to-point command on a router that will be communicating with another router over a Frame Relay virtual circuit that is identified by the DLCI 102. Which two commands would be appropriate for the network engineer to issue next? (Choose two.)

no shutdown


no ip address


encapsulation frame relay

ip address 10.1.1.10 255.255.255.252

frame-relay interface-dlci 102

18

Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces? (Choose two.)

LMI status inquiry messages sent to the network are not received.


Inverse ARP fails to associate all IP addresses to the correct DLCIs.


Frame Relay is unable to map a remote IP address to a DLCI.

Distance vector routing protocols are unable to forward routing updates back out the incoming interface to other remote routers.

Link-state routing protocols are unable to complete neighbor discovery.

19

 

Refer to the exhibit. A network administrator has implemented the show interfaces serial 0/1/0 command. What can be verified from the displayed output?

Router R1 connects to multiple sites through the serial 0/1/0 interface.

Router R1 is forwarding traffic on interface serial 0/1/0 using the local DLCI 1023.


Router R1 is not using the default LMI type.​


Router R1 has been configured with Frame Relay via the ietf keyword.

20

The show frame-relay pvc command is best utilized to display the number for which type of packets that are received by the router?

FECN and BECN messages


Inverse Neighbor Discovery messages


Inverse ARP messages


LMI status messages

21

CCNA 4 Chapter 4 v5.0 Exam Answers 2014

CCNA 4 Chapter 3 v5.0 Exam Answers 2014

1.

Which address is used in the Address field of a PPP frame?

a single byte of binary 10101010

a single byte of binary 11111111*


the IP address of the serial interface


a single byte of binary 00000000

2

How does PPP interface with different network layer protocols?

by specifying the protocol during link establishment through LCP


by encoding the information field in the PPP frame

by using separate NCPs*


by negotiating with the network layer handler

3

Place the options in the following order:

Compression

Multilink

Maximum Receive Unit

– not scored –

Authentication Protocol

4

Which command can be used to view the cable type that is attached to a serial interface?

Router(config)# show controllers*


Router(config)# show ip interface


Router(config)# show interfaces


Router(config)# show ip interface brief

5

In which situation would the use of PAP be preferable to the use of CHAP?

when plain text passwords are needed to simulate login at the remote host*


when router resources are limited


when multilink PPP is used


when a network administrator prefers it because of ease of configuration

6

Which protocol will terminate the PPP link after the exchange of data is complete?

IPCP

LCP*


IPXCP


NCP

7

Refer to the exhibit. Which statement describes the status of the PPP connection?

Both the link-establishment and network-layer phase completed successfully.*


Only the network-layer phase completed successfully.


Only the link-establishment phase completed successfully.


Neither the link-establishment phase nor the network-layer phase completed successfully.

8

Which is an advantage of using PPP on a serial link instead of HDLC?

option for session establishment


higher speed transmission

option for authentication*


fixed-size frames

9

Which three statements are true about PPP? (Choose three.)

PPP can use synchronous and asynchronous circuits.*


PPP carries packets from several network layer protocols in LCPs.


PPP can only be used between two Cisco devices.

PPP uses LCPs to agree on format options such as authentication, compression, and error detection.*

PPP uses LCPs to establish, configure, and test the data link connection.*

10

When configuring Multilink PPP, where is the IP address for the multilink bundle configured?

on a subinterface


on a physical serial interface


on a physical Ethernet interface

on a multilink interface*

11

Which field marks the beginning and end of an HDLC frame?

FCS

Flag*


Control


Data

12

Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.

Both PAP and CHAP authentication were attempted.

A PPP session was successfully established.*


CHAP authentication failed because of an unknown hostname.


The debug output is from router R2.

13

During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)

Configure-Reject*


Code-Reject


Discard-Request

Configure-Nak*


Protocol-Reject

14

A network administrator is evaluating authentication protocols for a PPP link. Which three factors might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)

uses an unpredictable variable challenge value to prevent playback attacks*

uses a three-way authentication periodically during the session to reconfirm identities*

transmits login information in encrypted format*


control by the remote host of the frequency and timing of login events


establishes identities with a two-way handshake


makes authorized network administrator intervention a requirement to establish each session

15

Place the options in the following order:

Step 3

Step 2

Step 4

Step 1

– not scored –

Step 5

Step 6

16

What are three components of PPP? (Choose three.)

LCP*


multilink

NCP*


HDLC-like framing*


compression


authentication

17

Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?​

The passwords do not match.*


The usernames do not match.


The passwords should be longer than 8 characters.


The interface IP addresses are in different subnets.

18

Which PPP option can detect links that are in a looped-back condition?

Magic Number*


Callback


MRU


ACCM

19

Which three are types of LCP frames used with PPP? (Choose three.)

link-negotiation frames


link-acknowledgment frames

link-maintenance frames*

link-termination frames*

link-establishment frames*


link-control frames

20

At which layer of the OSI model does multiplexing take place?

Layer 3


Layer 4


Layer 2

Layer 1*

21

Place the options in the following order:

Phase 3

– not scored –

Phase 1

Phase 2

22

Which three physical layer interfaces support PPP? (Choose three.)

GigabitEthernet

asynchronous serial*

HSSI*


synchronous serial*


POTS


FastEthernet

23

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Why is the serial link between router R1 and router R2 not operational?

The encapsulation in both routers does not match.


The passwords are different in both routers.

In each case the expected username is not the same as the remote router hostname.*


The authentication type is not the same in both routers.

24

Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?

Serial 0/0/0 is up, line protocol is down


Serial 0/0/0 is administratively down, line protocol is down


Serial 0/0/0 is up (disabled)


Serial 0/0/0 is up, line protocol is up

Serial 0/0/0 is down, line protocol is down*


Serial 0/0/0 is up (looped)

CCNA 4 Chapter 3 v5.0 Exam Answers 2014

CCNA 4 Chapter 2 v5.0 Exam Answers 2014

1.

Which WAN technology is cell-based and well suited to carry voice and video traffic?

VSAT


ISDN


Frame Relay

ATM*

2

Which WAN connectivity method would be used in a remote location where there are no service provider networks?

VPN


WiMAX


cable

VSAT*

3

Which network scenario will require the use of a WAN?

Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.

Employees need to connect to the corporate email server through a VPN while traveling.*


Employee workstations need to obtain dynamically assigned IP addresses.


Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.

4

Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)

ATM

ISDN*


Frame Relay


MPLS

dialup*

5

Which geographic scope requirement would be considered a distributed WAN scope?

regional


one-to-one


global


local


one-to-many

many-to-many*

6

What are two advantages of packet switching over circuit switching? (Choose two.)

A connection through the service provider network is established quickly before communications start.


There are fewer delays in the data communications processes.

The communication costs are lower.

Multiple pairs of nodes can communicate over the same network channel.*


A dedicated secure circuit is established between each pair of communicating nodes.

7

Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?

VPN*


WiMAX


DSL


cable

8

Place the options in the following order:

- not scored –

CPE

Local Loop

– not scored –

DTE

DCE

9

Which wireless technology provides Internet access through cellular networks?

satellite


municipal WiFi

LTE*


WiMAX

10

What is a requirement of a connectionless packet-switched network?

Full addressing information must be carried in each data packet.*


A virtual circuit is created for the duration of the packet delivery.


Each packet has to carry only an identifier.


The network predetermines the route for a packet.

11

A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?

circuit-switched network


packet-switched network


MPLS

Ethernet WAN*

12

Which WAN technology establishes a dedicated constant point-to-point connection between two sites?

ATM


Frame Relay

leased lines*


ISDN

13

A company needs to interconnect several branch offices across a metropolitan area. The network engineer is seeking a solution that provides high-speed converged traffic, including voice, video, and data on the same network infrastructure. The company also wants easy integration to their existing LAN infrastructure in their office locations. Which technology should be recommended?

Frame Relay

Ethernet WAN*


ISDN


VSAT

14

A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?

WiMAX*


DSL


802.11


municipal Wi-Fi

15

Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)

dialup modem


access server

DSU*

CSU*


Layer 2 switch

16

Place the options in the following order:

uses traditional video network

uses traditional phone network

set up by a city to provide free Internet access

slow access (upload speed is about one-tenth download speed)

– not scored -

17

What is a feature of dense wavelength-division multiplexing (DWDM) technology?

It replaces SONET and SDH technologies.


It provides Layer 3 support for long distance data communications.


It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.

It enables bidirectional communications over one strand of fiber.*

18

What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?

municipal Wi-Fi

VPN*


ATM


ISDN

19

A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?

a broadband service, such as DSL, through their local service provider*


a dialup connection that is supplied by their local telephone service provider


Virtual Private Networks that would enable the company to connect easily and securely with employees


private dedicated lines through their local service provider

20

What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?

ATM


MPLS


ISDN

DWDM*

21

A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

private infrastructure


dedicated

public infrastructure*

Internet*


satellite

22

What are two common high-bandwidth fiber-optic media standards? (Choose two.)

ITU


ANSI


ATM

SDH*

SONET*

CCNA 4 Chapter 2 v5.0 Exam Answers 2014