CCNA Discovery 4 - Module Final 1 Exam Version 4.0 Designing and Supporting Computer Networks

1. A new network is to be configured on a router. Which of the following tasks must be completed to configure this interface and implement dynamic IP routing for the new network? (Choose three.)
• Select the routing protocol to be configured.
• Assign an IP address and subnet mask to the interface.
• Update the ip host configuration information with the device name and new interface IP address.
• Configure the routing protocol with the new network IP address.
• Configure the routing protocol with the new interface IP address and subnet mask.
• Configure the routing protocol in use on all other enterprise routers with the new network information.

2. A customer reports connectivity problems to an ISP technician. Upon questioning the customer, the technician discovers that all network applications are functioning except for FTP. What should the technician suspect is the problem?
• misconfigured firewall
• bad port on switch or hub
• misconfigured IP addressing on the customer’s workstation
• wrong DNS server configured on the customer’s workstation
• wrong default gateway configured on the customer’s workstation

3. A user reports being unable to access the Internet. The help desk technician employs a bottom-up approach to troubleshooting. The technician first has the user check the patch cable connection from the PC to the wall, and then has the user verify that the NIC has a green link light. What will the technician have the user do next?
• Enter an IP address into the WWW browser address bar to see if DNS is at fault.
• Use traceroute to identify the device along the path to the ISP that may be at fault.
• Verify the IP address, subnet, and gateway settings using ipconfig on the PC.
• Connect to the user home router to check firewall settings for blocked TCP ports.

4. Refer to the exhibit. The graphic shows the output of a command issued on router RTB. According to the output, what two statements are true of router RTB? (Choose two.)
• The router is connected to a router named Boise.
• Router RTB is connected to a Cisco 1841 router.
• Router RTB is directly connected to two other routers.
• The IP address of the router interface connected to router RTB is 192.168.2.6.
• The RTB router is connected to two Cisco devices by Fast Ethernet links.

5. What is used by a routing protocol to determine the best path to include in the routing table?
• Convergence time
• Default distance
• Metric
• Type of router

6. A Catalyst 2960 switch has been taken out of storage to be used as a temporary replacement for another switch that needs to be repaired. About a minute after the switch has started, the SYST LED on the front of the switch transitions from blinking green to amber. What is the meaning of the amber SYST LED?
• The switch has no configuration file in NVRAM.
• The switch has failed POST and must be sent for service.
• The switch is functioning properly.
• The switch is in half-duplex mode.

7. A company is developing an Internet store for its website. Which protocol should be used to transfer credit card information from customers to the company web server?
• FTPS
• HTTP
• HTTPS
• WEP2
• TFTP

8. Which two protocols allow network devices to report their status and events to a centralized network management device? (Choose two.)
• Syslog
• Telnet
• HTTP
• HTTPS
• SNMP

9. What are two purposes of DNS? (Choose two.)
• to dynamically assign IP addressing information to network hosts
• to simplify the administration of host and default gateway addressing on client computers
• to assign TCP port numbers to hosts as part of the data transfer process
• to resolve human-readable domain names to numeric IP addresses
• to replace the static HOSTS file with a more practical dynamic system

10. The show ip route command was executed on one of the routers shown in the graphic and the following output was displayed:
C 192.168.4.0/24 is directly connected, Serial0/0
R 192.168.5.0/24 [120/1] via 192.168.4.2, 00:00:19, Serial0/0
R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1
R 192.168.2.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1
C 192.168.3.0/24 is directly connected, Serial0/1
From which router was this command executed?
• A
• B
• C
• D

11. Given the network 192.168.25.0 shown in the graphic, which subnet mask would accommodate the number of hosts in each subnet?
• 255.255.0.0
• 255.255.224.0
• 255.255.255.0
• 255.255.255.224
• 255.255.255.240
• 255.255.255.248

12. A hacker attempts to reach confidential information that is stored on a server inside the corporate network. A network security solution inspects the entire packet, determines that it is a threat, and blocks the packet from entering the inside network. Which security measure protected the network?
• an IDS
• an IPS
• Anti-X software
• a host-based firewall

13. 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
• packet switched
• circuit switched
• point-to-point

14. Refer to the exhibit. Which combination of cables and symbols is correct?
• A - crossover, B - straight-through, C - straight-through
• A - crossover, B - rollover, C - straight-through
• A - straight-through, B -crossover, C - straight-through
• A - straight-through, B -straight-through, C - straight-through
• A - straight-through, B - straight-through, C - crossover
• A - rollover, B - straight-through, C - straight-through

15. Refer to the exhibit. Which IP addresses could be assigned to the hosts in the diagram? (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

16. Refer to the exhibit. Which type of UTP cable should be used to connect Host A to Switch1?
• rollover
• console
• crossover
• straight-through

17. Refer to the exhibit. A NOC technician at an ISP enters the command shown. What are two reasons to use this command? (Choose two.)
• to map the path to 192.168.1.7
• to test reachability to 192.168.1.7
• to locate connectivity problems along the route to 192.168.1.7
• to identify the ISPs that interconnect the NOC with the remote host with the address 192.168.1.7
• to measure the time that packets take to reach 192.168.1.7 and return to the technician’s workstation

18. What is the most commonly used exterior routing protocol?
• BGP
• RIP
• OSPF
• EIGRP

19. What minimum configurations must be set on a host to allow a request to be sent to http://www.cisco.com/? (Choose four.)
• DNS server
• WINS server
• IP address
• NetBIOS
• subnet mask
• default gateway

20. A small tire retailer requires a low-cost WAN connection to its headquarters in order to manage its inventory and process customer sales in real time. Which WAN connection type is best suited to its needs?
• Sonet
• T3
• dialup
• DSL
• leased line

21. Refer to the graphic. Which command will configure a static route on Router A to direct traffic from LAN A that is destined for LAN C?
• RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2
• RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2
• RouterA(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2
• RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.3.1
• RouterA(config)# ip route 192.168.3.2 255.255.255.0 192.168.4.0

22. A user reports being able to access the Internet but not being able to download e-mail from the mail server at the ISP. What should the user check on the user workstation?
• the POP3 and SMTP server settings in the e-mail application
• the patch cable connections at the back of the workstation and at the wall plate
• the DHCP settings in the operating system
• the IP address, mask, and default gateway values
• the NIC drivers

23. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?
• destination network address
• source network address
• source MAC address
• well known port destination address

24. What is one purpose of the TCP three-way handshake?
• sending echo requests from the source to the destination host to establish the presence of the destination
• determining the IP address of the destination host in preparation for data transfer
• requesting the destination to transfer a binary file to the source
• synchronizing sequence numbers between source and destination in preparation for data transfer

25. A network technician is using a network management station to gather data about the performance of devices and links within the ISP. Which application layer protocol makes this possible?
• SNMP
• FTP
• DHCP
• SMTP

26. How do port filtering and access lists help provide network security?
• They prevent specified types of traffic from reaching specified network destinations.
• They alert network administrators to various type of denial of service attacks as they occur.
• They prevent viruses, worms, and Trojans from infecting host computers and servers.
• They enable encryption and authentication of confidential data communications.

27. Refer to the exhibit. The network administrator has configured the RTA and RTB interfaces. In order to allow hosts that are attached to RTA to reach the server that is attached to RTB, a static route from RTA to the server LAN and a default route from RTB back to RTA need to be configured. Which two commands will the administrator use to accomplish these tasks on the two routers? (Choose two.)
• RTA(config)# ip route 10.16.10.5 255.255.255.252 10.16.10.6
• RTA(config)# ip route 0.0.0.0 0.0.0.0 10.16.10.6
• RTA(config)# ip route 10.16.10.96 255.255.255.252 10.16.10.6
• RTB(config)# ip route 10.16.10.6 255.255.255.248 10.16.10.6
• RTB(config)# ip route 0.0.0.0 0.0.0.0 S0/0/1
• RTB(config)# ip route 0.0.0.0 0.0.0.0 10.16.10.6

28. Refer to the exhibit. Which two sets of commands are required to configure passwords for all management ports on a Catalyst 2960 switch? (Choose two.)
• ALSwitch(config)# interface vlan 1
ALSwitch(config-if)# password cisco
ALSwitch(config-if)# login
• ALSwitch(config)# line vty 0 4
ALSwitch(config-line)# password cisco
ALSwitch(config-line)# login
• ALSwitch(config)# line vty 0 15
ALSwitch(config-line)# password cisco
ALSwitch(config-line)# login
• ALSwitch(config)# enable secret class
ALSwitch(config)# enable password cisco
• ALSwitch(config)# interface fa0/1
ALSwitch(config-if)# password cisco
ALSwitch(config-if)# no shutdown
• ALSwitch(config)# line cons 0
ALSwitch(config-line)# password cisco
ALSwitch(config-line)# login

29. The command copy tftp running-config has been entered on the router. What will this command do?
• copy the configuration in RAM to a server
• copy the configuration file from a server to RAM
• copy the configuration file in NVRAM to RAM
• copy the configuration file in NVRAM to a server
• copy the configuration file from a server to NVRAM

30. Refer to the exhibit. The network administrator needs to configure the router with a name. Which command will the administrator use to configure the router name?
• Router# ip hostname Boise
• Router# enable hostname Boise
• Router(config-line)# name Boise
• Router(config)# hostname Boise
• Router(config)# ip hostname Boise

31. How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?
• 30
• 256
• 2046
• 2048
• 4094
• 4096

32. Refer to the exhibit. A new branch office has been added to the corporate network and a new router is to be installed to allow branch office users to access the database server at headquarters. How should the serial 0/0/0 interface of the new branch office router be configured to connect to the headquarters router?
• branch_23(config-if)# ip address 192.168.5.19 255.255.255.240
branch_23(config-if)# no shutdown
• branch_23(config-if)# encapsulation hdlc
branch_23(config-if)# ip address 192.168.5.25 255.255.255.240
branch_23(config-if)# no shutdown
• branch_23(config-if)# encapsulation ppp
branch_23(config-if)# no shutdown
• branch_23(config-if)# encapsulation ppp
branch_23(config-if)# ip address 192.168.5.33 255.255.255.240
• branch_23(config-if)# encapsulation ppp
branch_23(config-if)# ip address 192.168.5.21 255.255.255.240
branch_23(config-if)# no shutdown

33. Which two statements are true about the use of the debug ip rip command on a Cisco router? (Choose two.)
• The debug ip rip command displays RIP routing activity in real time.
• The debug ip rip command can be issued at the user EXEC configuration mode.
• The debug ip rip command displays a combination of the information that is displayed by the show ip route and show ip protocols commands.
• Because of router processor usage, the debug ip rip command should be used only when necessary.
• The debug ip rip command should be used instead of the show ip route command whenever possible.

34. A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)
• The router will block the ping request message.
• The router will reply to the echo request with a proxy ping response.
• Workstation A will send a UDP ping request message to workstation B.
• Workstation B will send a UDP ping reply message to workstation A.
• Workstation A will send an ICMP echo request message to workstation B.
• Workstation B will send an ICMP echo reply message to workstation A.

35. Which type of address is 192.168.17.111/28?
• host address
• network address
• broadcast address
• multicast address

36. Refer to the exhibit. The network administrator of the building in the graphic needs to choose the type of cable best suited to add ServerB to the network. Which cable type is the best choice?
• STP
• UTP
• coaxial
• fiber optic

37. A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task?
• routable translation
• dynamic translation
• static translation
• port address translation

38. Refer to the exhibit. The network administrator uses the command below to configure a default route to the ISP network :
RTB(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.6
A ping issued from the ISP is successful to router RTB. However, ping echo request packets arrive at a host that is attached to the Fa0/0 interface of RTB, and the replies do not make it back to the ISP router. What will fix this problem?
• The ISP must be configured to forward packets from the 192.168.1.0 network.
• The ip route command needs to be edited so that the next hop address is 10.1.1.5.
• The ip route command needs to be edited so that the 192.168.1.1 address is the next hop address.
• The ip route command should be removed from the RTB router configuration.

39. How does TCP ensure the reliable transfer of data?
• If data segments are not received from the source, the destination requests that the segments be resent.
• If an acknowledgment of the transmitted segments is not received from the destination in a predetermined amount of the time, the source resends the data.
• TCP uses the SYN-ACK portion of the three-way handshake to ensure that all data has been received.
• The TCP Protocol Interpreter process verifies the transmitted data at source and destination.

40. Which subnet masks could be used when subnetting a Class B IP address? (Choose two.)
• 255.255.255.240
• 255.255.192.0
• 255.255.0.0
• 255.192.0.0
• 240.0.0.0
• 255.0.0.0

41. Which two commands ensure that any password that permits access to the privileged EXEC mode is not shown in plain text when the configuration files are displayed? (Choose two.)
• Router(config)# enable secret cisco
• Router(config)# enable cisco
• Router(config)# encryption-password all
• Router(config)# enable login encrypted
• Router(config)# enable password encryption
• Router(config)# service password-encryption

42. Refer to the exhibit. The network shown is connected using services from the same ISP. How will the Fohi router dynamically learn routes to the 192.168.16.16/28, 192.168.16.32/28, and 192.168.16.64/28 subnetworks?
• with BGP
• with a static route
• with a directly connected route
• with an interior routing protocol

43. Refer to the exhibit. The network administrator needs to configure the Fa0/0 interface of RTB so that hosts from RTA can connect to the server that is attached to RTB. Which two commands will the administrator use to accomplish this task? (Choose two.)
• RTB# ip address 192.168.102.98 255.255.255.248
• RTB(config-if)# ip address 192.168.102.99 255.255.255.252
• RTB(config)# ip address 192.168.102.97 255.255.255.252
• RTB(config)# no shutdown
• RTB(config-if)# no shutdown
• RTB(config-if)# ip address 192.168.102.97 255.255.255.252

44. Refer to the exhibit. Which two statements describe the data conversation shown? (Choose two.)
• The data conversation was started by the HTTP application process running on the client.
• The data conversation is identified by TCP port 80 on the client.
• The user started the data conversation by sending an e-mail.
• The IP address of the Internet server is 192.168.17.43.
• The Internet server will send data to port 8547 on the client.

45. What is true regarding the differences between NAT and PAT?
• PAT uses the word “overload” at the end of the access-list statement to share a single registered address.
• Static NAT allows an unregistered address to map to multiple registered addresses.
• Dynamic NAT allows hosts to receive the same global address each time external access is required.
• PAT uses unique source port numbers to distinguish between translations.

46. What is the purpose of the routing process?
• to encapsulate data that is used to communicate across a network
• to select the paths that are used to direct traffic to destination networks
• to convert a URL name into an IP address
• to provide secure Internet file transfer
• to forward traffic on the basis of MAC addresses

47. What are three characteristics of the TCP protocol? (Choose three.)
• exchanges datagrams unreliably
• is used to send IP error messages
• forces the retransmission of unacknowledged packets
• creates a virtual session between end-user applications
• carries the IP address of the destination host in the TCP header
• is responsible for breaking messages into segments and reassembling them at their destination

48. After an unsuccessful ping to the local router, the technician decides to investigate the router. The technician observes that the lights and fan on the router are not operational. In which layer of the OSI model is the problem most likely occurring?
• transport
• network
• data link
• physical

49. Why are port numbers included in the TCP header of a segment?
• to indicate the correct router interface that should be used to forward a segment
• to identify which switch ports should receive or forward the segment
• to determine which Layer 3 protocol should be used to encapsulate the data
• to enable a receiving host to forward the data to the appropriate application
• to allow the receiving host to assemble the packet in the proper order

50. How does a router know of paths to destination networks? (Choose two.)
• inspection of the destination IP address in data packets
• ARP requests from connected routers
• manual configuration of routes
• updates from other routers
• DHCP information broadcasts
• updates from the SMTP management information base

CCNA Discovery 3 - Module 5 Exam Version 4.0 Introducing Routing and Switching in the Enterprise

1. How often does RIPv2 send routing table updates, by default?
• every 30 seconds
• every 45 seconds
• every 60 seconds
• every 90 seconds

2. What two problems may occur if the EIGRP default bandwidth for a serial link is higher than the actual bandwidth? (Choose two.)
• Routing updates will arrive too quickly for receiving routers to process.
• The port IP address will be rejected by the routing protocol.
• Suboptimal paths will be selected.
• The port protocol will return to the HDLC default.
• VLSM support will be disabled.
• Network convergence may be affected.

3. What two statements are correct regarding EIGRP authentication? (Choose two.)
• EIGRP authentication uses the MD5 algorithm.
• EIGRP authentication uses a pre-shared key.
• EIGRP authentication requires that both routers have the same key chain name.
• EIGRP authentication uses varying levels of WEP to encrypt data exchanged between routers.
• EIGRP authentication can be configured on one router and updates from this router are protected; whereas a neighbor router can be without the authentication configuration and its updates are unprotected.

4. What prevents RIPv1 updates from being correctly advertised?
• an increase in network load
• the use of variable length subnet masks
• the use of multiple Layer 3 networks on the same router
• a variation in connection speeds on the links to a destination
• a mismatch between the configured bandwidth and the actual bandwidth of a link


5. Refer to the exhibit. Which statement is true about the EIGRP authentication configuration?
• RTA and RTB will accept updates from each other.
• RTA and RTB will not accept updates from each other because key 1 on RTB does not match RTA.
• RTA and RTB will not accept updates from each other because the key chain names do not match.
• The ip authentication mode AS does not match the locally configured AS.


6. Refer to the exhibit. Routers RTR-1 and RTR-3 are completely configured. The administrator needs to configure the routing protocol on router RTR-2 so that communication occurs throughout the network. Which group of commands will successfully configure EIGRP on RTR-2?
• RTR-2(config)# router eigrp 1
RTR-2(config-router)# network 198.18.76.0
• RTR-2(config)# router eigrp 1
RTR-2(config-router)# network 198.18.76.0 0.0.0.3 no-summary
RTR-2(config-router)# network 198.18.76.4 0.0.0.3 no-summary
RTR-2(config-router)# network 198.18.76.128 0.0.0.192 no-summary
• RTR-2(config)# router eigrp 1
RTR-2(config-router)# network 198.18.76.0 0.0.0.3 area 0
RTR-2(config-router)# network 198.18.76.4 0.0.0.3 area 0
RTR-2(config-router)# network 198.18.76.192 0.0.0.192 area 0
• RTR-2(config)# router eigrp 1
RTR-2(config-router)# network 198.18.76.0 0.0.0.3
RTR-2(config-router)# network 198.198.76.4 0.0.0.3
RTR-2(config-router)# network 198.198.76.128 0.0.0.192


7. Refer to the exhibit. A network administrator is troubleshooting a routing problem. When the show ip route command is entered on RTR-1, only the serial link between RTR-2 and RTR-3 has been learned from the RIP routing protocol. What are two issues? (Choose two.)
• RIPv1 is a classful routing protocol.
• RIPv1 does not support subnetting.
• The Ethernet networks on RTR-2 and RTR-3 were not entered correctly in the network statements on these routers.
• RIPv1 does not support VLSM.
• RIPv1 is a classless routing protocol.

8. Given the following commands:
Router(config)# router rip
Router(config-router)# network 192.31.7.0
What three conclusions can be determined based on the commands used on the router? (Choose three.)
• A link-state routing protocol is used.
• A distance vector routing protocol is used.
• Routing updates broadcast every 30 seconds.
• Routing updates broadcast every 90 seconds.
• Hop count is the only metric used for route selection.
• Bandwidth, load, delay, and reliability are metrics used for route selection.

9. What three statements are true about routers that are configured for EIGRP? (Choose three.)
• They can support multiple routed protocols
• They can support only link-state protocols.
• They send their entire routing tables to neighboring routers.
• They send partial routing updates in response to topology changes.
• They send routing updates to all other routers in the network.
• They use hello packets to inform neighboring routers of their status.

10. A network administrator issues the command show ip route and sees this line of output:
192.168.3.0/24 [120/2] via 192.168.2.2, 00:00:05, Serial0/0
What two pieces of information can be obtained from the output? (Choose two.)
• RIP is the routing protocol configured.
• This is a static route to network 192.168.3.0.
• The metric for this route is 2.
• The next periodic update is in 5 seconds.
• The autonomous system number is 120.

11. What two statements are true regarding EIGRP tables? (Choose two.)
• A feasible successor route can be found in the topology table.
• A successor route can only be found in the routing table.
• The topology table shows whether a route is in the passive or active state.
• The routing table shows the amount of time elapsed since a router adjacency was formed.
• The neighbor table shows all adjacent Cisco devices.
• Administrative distance is shown as a column in the neighbor table.

12. What is the default administrative distance for EIGRP internal routes?
• 70
• 90
• 100
• 110
• 120
• 255

13. What is the maximum number of hops that RIP will attempt before it considers the destination unreachable?
• 14 hops
• 15 hops
• 16 hops
• 17 hops

14. What is the purpose of the network command when RIP is being configured as the routing protocol?
• It identifies the networks connected to the neighboring router.
• It restricts networks from being used for static routes.
• It identifies all of the destination networks that the router is allowed to install in its routing table.
• It identifies the directly connected networks that will be included in the RIP routing updates.

15. What is indicated when an EIGRP route is in the passive state?
• The route has the highest path cost of all routes to that destination network.
• The route must be confirmed by neighboring routers before it is put in the active state.
• The route is a feasible successor and will be used if the active route fails.
• There is no activity on the route to that network.
• The route is viable and can be used to forward traffic.


16. Refer to the exhibit. Which statement is true about the output from the show ip protocols command?
• RIPv2 is configured on this router.
• Auto summarization has been disabled.
• The next routing update is due in 17 seconds.
• 192.168.16.1 is the address configured on the local router

17. When should EIGRP automatic summarization be turned off?
• when a router has not discovered a neighbor within three minutes
• when a router has more than three active interfaces
• when a network contains discontiguous network addresses
• when a router has less than five active interfaces
• when a network addressing scheme uses VLSM

18. How do EIGRP routers establish and maintain neighbor relationships?
• by exchanging neighbor tables with directly attached routers
• by comparing known routes to information received in updates
• by exchanging hello packets with neighboring routers
• by dynamically learning new routes from neighbors
• by exchanging routing tables with directly attached routers

19. Which Layer 4 protocol does EIGRP use to provide reliability for the transmission of routing information?
• DUAL
• IP
• PDM
• RTP
• TCP
• UDP


20. Refer to the exhibit. Routers A and B have EIGRP configured and automatic summarization has been disabled on both routers. Which router command will summarize the attached routes?
• ip area-range eigrp 1 192.168.10.80 255.255.255.224
• ip summary-address eigrp 1 192.168.10.64 255.255.255.192
• ip summary-address 192.168.10.80 0.0.0.31
• ip summary-address eigrp 1 192.168.10.64 0.0.0.63
• ip area-range eigrp 1 192.168.10.64 255.255.255.224

21. What does a router that is running RIP use to determine the best path to take when forwarding data?
• the host portion of the network address
• the speed of network convergence
• the calculated metric for the destination network
• the number of broadcasts occurring on an interface
• the number of errors occurring on an interface