CCNA Discovery 3 - Module 7 Exam Version 4.0 Introducing Routing and Switching in the Enterprise

1. Permanent virtual circuits and switched virtual circuits are both part of which option for WAN connectivity?
• leased line
• cell switching
• packet switching
• circuit switching

2. Which best describes data communications equipment (DCE)?
• serves as data source and/or destination
• responsible for negotiating windowing and acknowledgements
• physical devices such as protocol translators and multiplexers
• equipment that forwards data and is responsible for the clocking signal

3. What best describes the use of a data-link connection identifier (DLCI)?
• an address identifying a virtual circuit
• a logical address identifying the DCE device
• an address identifying a Layer 3 service across a Frame Relay network
• a logical address identifying the physical interface between a router and a Frame Relay switch

4. When customers use credit cards to make purchases at a small business, a modem is heard dialing a telephone number to transfer the transaction data to the central office. What type of WAN serial connection is in use?
• leased line
• point-to-point
• circuit switched
• packet switched

5. What does a Frame Relay switch use to inform the sender that there is congestion?
• FECN
• BECN
• DE
• FCS

6. Which three statements describe functions of the Point-to-Point Protocol with regards to the OSI model?(Choose three.)
• operates at all layers of the OSI model
• provides a mechanism to multiplex several network layer protocols
• can be configured on both synchronous and asynchronous serial interfaces
• uses Layer 3 of the OSI model to establish and maintain a session between devices
• uses the data link layer to configure such options as error detection and compression
• uses network control protocols to test and maintain connectivity between devices

7. Which two options can LCP negotiate? (Choose two.)
• compression
• authentication
• dynamic flow control
• network layer address for IP
• connection-oriented or connectionless communication methods


8. Refer to the exhibit. The network administrator is configuring R1 to connect to R2, which is a non-Cisco router. Which encapsulation method will need to be configured for communication to occur?
• HDLC
• HSSI
• ISDN
• IPCP
• PPP

9. What two services allow the router to dynamically map data link layer addresses to network layer addresses Frame Relay network? (Choose two.)
• ARP
• ICMP
• Proxy ARP
• Inverse ARP
• LMI status messages


10. Refer to the exhibit. What statement is true about the debug output?
• R2 is using PAP instead of CHAP.
• The routers have different CHAP passwords configured.
• The administrator performed a shutdown on the R2 PPP interface during negotiation.
• The Layer 3 protocol negotiation caused the connection failure.

11. Why are Network Control Protocols used in PPP?
• to establish and terminate data links
• to provide authentication capabilities to PPP
• to manage network congestion and to allow quality testing of the link
• to allow multiple Layer 3 protocols to operate over the same physical link

12. Which two statements describe the function of time-division multiplexing? (Choose two.)
• Multiple data streams share one common channel.
• Conversations that require extra bandwidth receive any unused time slices.
• Time slots are utilized on a first-come, first-served basis.
• Time slots go unused if a sender has nothing to transmit.
• Priority can be dedicated to one data source.

13. A company is implementing dialup services for remote workers to connect to the local network. The company uses multiple Layer 3 protocols and requires authentication for security. Which protocol should be used for this remote access?
• LMI
• PPP
• HDLC
• Frame Relay

14. What is the data transmission rate for the DS0 standard?
• 44 kb/s
• 64 kb/s
• 1.544 Mb/s
• 44.736 Mb/s

15. At what physical location does the responsibility for a WAN connection change from the user to the service provider?
• demilitarized zone (DMZ)
• demarcation point
• local loop
• cloud

16. Why are Frame Relay paths referred to as virtual?
• Frame Relay PVCs are created and discarded on demand.
• The connections between PVC endpoints act like dialup circuits.
• There are no dedicated circuits to and from the Frame Relay carrier.
• The physical circuits inside the Frame Relay cloud do not contain exclusive links for a specific Frame Relay connection.


17. Refer to the exhibit. What statement is true about the exhibited output?
• LCP is in the process of negotiating a link.
• LCP and NCP are waiting for CHAP authentication to complete.
• LCP negotiation has completed successfully, but NCP negotiation is in progress.
• LCP and NCP negotiation is complete, and the data link service is available to carry packets.

18. Which three statements are true regarding LCP? (Choose three.)
• It is responsible for negotiating link establishment.
• It negotiates options for Layer 3 protocols running over PPP.
• It uses MD5 encryption while negotiating link-establishment parameters.
• It terminates the link upon user request or the expiration of an inactivity timer.
• It can test the link to determine if link quality is sufficient to bring up the link.
• It monitors the link for congestion and dynamically adjusts the acceptable window size.

19. What occurs in the encapsulation process as a data packet moves from a LAN across a WAN?
• The Layer 2 encapsulation changes to a format that is appropriate for the WAN technology.
• The Layer 3 encapsulation changes to a format that is appropriate for the WAN technology.
• Both Layer 2 and Layer 3 encapsulation change to a technology that is appropriate for the WAN.
• Both Layer 2 and Layer 3 encapsulation remain constant as the data packet travels throughout the network.


20. Refer to the exhibit. A network administrator has a connectivity problem between the serial interfaces of Merida and Vargas. What is the cause of the problem?
• Authentication is required on the serial link.
• The encapsulation is misconfigured.
• The IP addresses are on different subnets.
• The serial interface on Vargas is shutdown.
• The loopback interfaces on both routers are not configured.

21. What statement best describes cell switching?
• It uses a dedicated path between endpoints.
• It creates a permanent physical link between two points.
• It uses DLCIs to identify virtual circuits.
• It creates fixed-length packets that traverse virtual circuits.

22. In which two layers of the OSI model are key differences found between a LAN and a WAN. (Choose two.)
• Layer 1
• Layer 2
• Layer 3
• Layer 4
• Layer 6
• Layer 7

23. Which statement is true about the Cisco implementation of the HDLC protocol?
• It supports authentication.
• It has a universally compatible frame format.
• It is the default encapsulation for serial interfaces on Cisco routers.
• It does not support multiple protocols across a single link.

24. Which field of a frame uses error detection mechanisms to verify that the frame is not damaged intransit?
• FCS
• MTU
• flag
• control
• protocol

CCNA Discovery 3 - Module 4 Exam Version 4.0 Introducing Routing and Switching in the Enterprise

1. How does a router keep track of which inside local address is used when NAT overload is configured?
• The router adds an additional bit to the source IP address and maintains a separate table.
• The router modifies the QoS field.
• The router uses TCP or UDP port numbers
• The router uses a manual entry that is created and maintained in the database of the router.

2. Refer to the exhibit. Which two are valid VLSM network addresses for the serial link between Router1 and Router2? (Choose two.)
• 192.168.1.4/30
• 192.168.1.8/30
• 192.168.1.90/30
• 192.168.1.101/30
• 192.168.1.190/30

3. Refer to the exhibit. All networks that are shown have a /24 prefix. Assuming that all routes have been discovered by all routers in the network, which address will successfully summarize only the networks that are shown?
• 192.168.8.0/21
• 192.168.8.0/24
• 192.168.16.0/20
• 192.168.16.0/21
• 192.168.16.0/24

4. Which NAT term refers to the IP address of your inside host as it appears to the outside network?
• inside global IP address
• outside global IP address
• inside local IP address
• outside local IP address

5. Host A in the exhibit is assigned the IP address 10.118.197.55/20. How many more network devices can be added to this same subnetwork?
• 253
• 509
• 1021
• 2045
• 4093

6. What are the network and broadcast addresses for host 192.168.100.130/27? (Choose two.)
• network 192.168.100.0
• network 192.168.100.128
• network 192.168.100.130
• broadcast 192.168.100.157
• broadcast 192.168.100.159
• broadcast 192.168.100.255

7. What two advantages does CIDR provide to a network? (Choose two.)
• reduced routing table size
• dynamic address assignment
• automatic route redistribution
• reduced routing update traffic
• automatic summarization at classful boundaries

8. When configuring NAT on a Cisco router, what is the inside local IP address?
• the IP address of an inside host as it appears to the outside network
• the IP address of an outside host as it appears to the inside network
• the IP address of an inside host as it appears to the inside network
• the configured IP address assigned to a host in the outside network

9. A company using a Class B IP addressing scheme needs as many as 100 subnetworks. Assuming that variable length subnetting is not used and all subnets require at least 300 hosts, what subnet mask is appropriate to use?
• 255.255.0.0
• 255.255.240.0
• 255.255.254.0
• 255.255.255.0
• 255.255.255.128
• 255.255.255.192

10. How many addresses will be available for dynamic NAT translation when a router is configured with the following commands?
• Router(config)#ip nat pool TAME 209.165.201.23 209.165.201.30 netmask 255.255.255.224
• Router(config)#ip nat inside source list 9 pool TAME
• 7
• 8
• 9
• 10
• 24
• 31

11. Refer to the exhibit. Which address is an inside global address?
• 10.1.1.1
• 10.1.1.2
• 198.18.1.55
• 64.100.0.1

12. Refer to the exhibit. Which two IP addresses could be assigned to the hosts that are shown in the exhibit? (Choose two.)
• 192.168.65.31
• 192.168.65.32
• 192.168.65.35
• 192.168.65.60
• 192.168.65.63
• 192.168.65.64

13. What range of networks are summarized by the address and mask, 192.168.32.0/19?
• 192.168.0.0/24 - 192.168.32.0/24
• 192.168.0.0/24 - 192.168.31.0/24
• 192.168.32.0/24 – 192.168.64.0/24
• 192.168.32.0/24 – 192.168.63.0/24

14. When running NAT, what is the purpose of address overloading?
• limit the number of hosts that can connect to the WAN
• allow multiple inside addresses to share a single global address
• force hosts to wait for an available address
• allow an outside host to share inside global addresses

15. Refer to the exhibit. Based on the output of the show ip nat translations command, which kind of address translation is in effect on this router?
• static
• public
• overload
• private

16. Refer to the exhibit. RIP version 2 is configured as the network routing protocol and all of the default parameters remain the same. Which update is sent from R2 to R3 about the 10.16.1.0/24 network connected to R1?
• 10.16.0.0/16
• 10.0.0.0/24
• 10.0.0.0/8
• 10.16.1.0/24

17. What is the CIDR prefix designation that summarizes the entire reserved Class B RFC 1918 internal address range?
• /4
• /8
• /12
• /16
• /20

18. What is a characteristic of a classful routing protocol on the network?
• All subnets are seen by all routers.
• CIDR addresses are advertised.
• A subnet can be further subnetted down and advertised correctly.
• Updates received by a router in a different major network have the default mask applied.

19. A network administrator is asked to design a new addressing scheme for a corporate network. Presently, there are 500 users at the head office, 200 users at sales, 425 at manufacturing, and 50 at the research site. Which statement defines the correct VLSM addressing map with minimal waste using the 172.16.0.0/16 network?
• 172.16.0.0/20 head office
172.16.1.0/21 manufacturing
172.16.1.0/22 sales
172.16.3.0/26 research
• 172.16.48.0/19 head office
172.16.16.0/20 manufacturing
172.16.48.128 sales
172.16.48.0/26 research
• 172.16.2.0/23 head office
172.16.4.0/23 manufacturing
172.16.6.0/24 sales
172.16.7.0/26 research
• 172.16.2.0/22 head office
172.16.3.0/23 manufacturing
172.16.4.0/26 sales
172.16.4.128/25 research

20. A network engineer is implementing a network design using VLSM for network 192.168.1.0/24. After subnetting the network, the engineer has decided to take one of the subnets, 192.168.1.16/28 and subnet it further to provide for point-to-point serial link addresses. What is the maximum number of subnets that can be created from the 192.168.1.16/28 subnet for serial connections?
• 1
• 2
• 4
• 6
• 8
• 16

Cisco Certifications Overview

Basic Certifications and Focused Certifications

Cisco delivers 3 levels of general certification representing growing levels of knowledge: Associate, Specialist, and Specialist (CCIE). Different tracks across these levels align with varying profession needs. A variety of focused Cisco Certified Specialist certifications are obtainable as properly to show expertise in specific technologies, options or job roles.

CCNA

The CCNA certification (Cisco Certified Network Associate) indicates a foundation in and apprentice information of networking. CCNA certified pros can set up, configure, and operate LAN, WAN, and dial access services for tiny networks (one hundred nodes or fewer), which includes but not restricted to use of these protocols: IP, IGRP, Serial, Frame Relay, IP RIP, VLANs, RIP, Ethernet,
Access Lists.

CCNP

The CCNP certification (Cisco Certified Network Professional) indicates advanced or journeyman information of networks. With a CCNP, a network professional can set up, configure, and troubleshoot neighborhood and wide region networks for enterprise organizations with networks from 100 to more than 500 nodes. The content material emphasizes topics such as security, converged networks, high quality of service (QoS), virtual private networks (VPN) and broadband technologies.

CCSP

The CCSP certification (Cisco Certified Security Skilled) indicates advanced information of securing Cisco networks. With a CCSP, a network specialist can secure and handle network infrastructures to defend productivity and minimize costs. The content material emphasizes topics such as perimeter safety, virtual private networks, intrusion protection as nicely as how to combine these technologies in a single, integrated network safety remedy.

CCIP

The CCIP (Cisco Certified Internetwork Specialist) gives folks functioning in service provider organizations with competencies in infrastructure IP networking solutions. CCIP specialists have detailed understanding of networking technologies in the service provider arena which includes IP routing, IP QoS, BGP, and MPLS.

CCIE R&S

CCIE certification in Routing and Switching indicates specialist level expertise of networking across various LAN and WAN interfaces, and a variety of routers and switches. Authorities in R&S resolve complex connectivity troubles and apply technologies options to improve bandwidth, increase response times, maximize overall performance, boost security, and help worldwide applications. Candidates need to be able to install, configure, and maintain LAN, WAN, and dial access solutions.

Becoming a CCIE requires passing a set of exams

There are no formal prerequisites for CCIE certification. Other skilled certifications and/or certain education courses are not needed. As an alternative, candidates are anticipated to have an in-depth understanding of the subtleties, intricacies and challenges of finish-to-finish networking. You are strongly encouraged to have three-5 years of job knowledge ahead of attempting certification. To get your CCIE, you have to 1st pass a written qualification exam and then a corresponding hands-on lab exam.

CCIE Security

CCIE certification in Safety indicates specialist level knowledge of IP and IP routing as effectively as distinct security protocols and components.

Becoming a CCIE requires passing a set of exams
There are no formal prerequisites for CCIE certification. Other professional certifications and/or specific education courses are not necessary. Alternatively, candidates are anticipated to have an in-depth understanding of the subtleties, intricacies and challenges of end-to-finish networking. You are strongly encouraged to have 3-five years of job experience before attempting certification. To obtain your CCIE, you must 1st pass a written qualification exam and then a corresponding hands-on lab exam.

CCIE VoIP (350-030)

CCIE certification in Voice indicates professional level knowledge of VoIP options in the enterprise. Candidates must be able to set up, configure and maintain Voice solutions more than IP networks. The CCIE Voice track, even so, does not certify an understanding of the infrastructure more than which VoIP options are implemented. This contrasts with the CCIE Service Provider-IP Telephony track which certifies an person as a core IP professional with a high degree of VoIP literacy.

CCIE Storage

CCIE certification in Storage Networking indicates expert level expertise of intelligent storage options over extended network infrastructure employing a number of transport possibilities such as Fibre Channel, iSCSI, FCIP and FICON. Storage Networking extensions let businesses to increase disaster recovery, optimize performance and take advantage of network services such as volume management, data replication, and enhanced integration with blade servers and storage appliances.

General Certifications: Three Levels of Certification

Associate. The 1st step in Cisco networking starts at the Associate level. Think of this as the apprentice or foundation level of networking certification.

Expert. This is the sophisticated or journeyman level of certification.

Expert. This is CCIE, the highest level of achievement for network specialists, certifying an person as an specialist or master.

Basic Certifications: Four Distinct Paths

Network Installation and Help. This path is for pros who install and support Cisco technologies-primarily based networks in which LAN and WAN routers and switches reside.

Network Engineering and Style. This path is for experts who design Cisco technology-based networks in which LAN and WAN routers and switches reside.

Service Provider. This path is aimed at experts working with infrastructure or access solutions in a Cisco finish-to-finish atmosphere mainly within the telecommunications arena.

Network Safety. This path is directed toward network specialists who design and implement Cisco Safe networks.

All about the Cisco Certifications submitted by Kashif Raza [http://www.networkingtutorials.net]

Getting the Most Out of Your Cisco Certification Study

This dominance of Cisco certifications in networking is undeniable and presses upon the require of thinking about a couple of factors even though pursuing any of the Cisco certifications. The paramount factor in this view is the good quality of certification training that you choose for oneself. Productive Cisco experts of today have it for anyone interested, "Correct education plus a great deal of lab practice is the key to remain at the helm of job industry".

One particular beneficial way to learn and assess your Cisco knowledge is on the internet certification resources. Speaking of the typical instruction, it offers you ample possibilities to get your self proficient in all the fields of CCNA, CCIE, CCNP or other Cisco cert exams. However, it would not be of a lot advantage if 1 cannot receive a certification soon after placing a lot of challenging perform and expenses into it.

Standard coaching alone does not guarantee that you are going to actually come out as a winner in the Cisco examination. For true accomplishment, you need to have to make certain that you are familiar with the genuine sort questions and answers that you recognize your strengths as effectively as weaknesses and that you have extensively worked on your weak areas, just before taking the exam. How can you do all that? It really is the on-line Cisco practice and training resources that can render the greatest aid right here.

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Cisco Certification: In What Order Should You Take Your CCNP Exams?

When you choose to pursue your Cisco Certified Network Professional certification, you've got some decisions to make right at the beginning. Cisco offers a three-exam path and a four-exam path, and you select the order in which you'll take and pass the exams.

While every CCNP candidate has to make their own decision, I'd like to share some thoughts based on my personal experience and the experiences of CCNPs worldwide.

The solid foundation of networking knowledge you built as a CCNA will help you a great deal on your BSCI (Building Scalable Cisco Internetworks, 642-801) exam. This is the most common exam to take first, and I'd recommend you do so as well. While there are some topics that will be new to you, such as BGP, many of the BSCI topics will be familiar to you from your CCNA studies.

The "middle" exams are the BCMSN (Building Cisco Multilayer Switched Networks, 642-811) and BCRAN (Building Cisco Remote Access Networks, 642-821). There is no real advantage in taking one of these before the other, although most candidates take the switching exam, then the remote access exam.

I do recommend you take the CIT (Cisco Internetwork Troubleshooting) exam last. This exam will demand you put into action the skills you have learned while earning your CCNA and passing the first three exams. Again, it's not written in stone and there are always exceptions, but CCNP candidates do seem to have more success on this exam when they take it last.

Should you choose the three-exam path, you'll be taking a Composite exam (642-891). This exam combines the BSCI and BCMSN exams, and it's best to take this one first. It builds nicely with your CCNA skills.

Again, I would take the BCRAN exam after the Composite, and the Troubleshooting exam last.

Whichever path you choose, you've chosen wisely in which certification to pursue. The CCNP is a true test of your networking skills, and when you make the decision to go after the CCIE, you'll be glad to have the solid foundation of networking skills your CCNA and CCNP studies gave you.

Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage, home of over 100 free certification exam tutorials, including Cisco CCNA certification test prep articles. His exclusive Cisco CCNA study guide and Cisco CCNA training is also available!

Visit his blog and sign up for Cisco Certification Central, a daily newsletter packed with CCNA, Network+, Security+, A+, and CCNP certification exam practice questions! A free 7-part course, "How To Pass The CCNA", is also available, and you can attend an in-person or online CCNA boot camp with The Bryant Advantage!