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CCNA 2 - Final Exam (A)
1. Refer to the exhibit. The network administrator issues the command no ip classless on Router1.
What forwarding action will take place on a packet that is received by Router1 and is destined for
host 192.168.0.26?
• The packet will be dropped
• The packet will be forwarded to the gateway of last resort.
• The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0.
• The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.
2. Which three statements are true of holddown timers? (Choose three.)
• used by link state routing protocols to prevent routing loops
• prevent update messages from reinstating a route that may have gone bad
• allow routers to still forward packets to destination networks that are in holddown
• limit the number of hops a packet can traverse through the network before it is discarded
• prevent a router advertising a network through the same interface from which the network was
learned
• permit lower metric updates received from any neighboring router to reinstate the route to a
possibly down Network
3. What command would the network administrator apply to a router that is running OSPF to
advertise the entire range of addresses included in 172.16.0.0/19 in area 0?
• R1(config-router)# network 172.16.0.0 0.0.0.255 area 0
• R1(config-router)# network 172.16.0.0 0.0.3.255 area 0
• R1(config-router)# network 172.16.0.0 0.0.15.255 area 0
• *R1(config-router)# network 172.16.0.0 0.0.31.255 area 0
4. Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the
JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24
network not be able to ping hosts on the Fa0/0 LAN of the JAX router?
• The JAX router has the wrong process ID.
• The JAX router needs the network 10.0.0.0 0.0.0.255 area 0 command.
• The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command.
• The BOS router needs the network 192.168.3.0 0.0.0.255 area 0 command.
5. Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the
10.0.0.0/24 network?
• ADC
• ABC
• It will load balance the traffic between ADC and ABC
• It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails.
6. Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator
discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is
configured correctly, which two static routes could be configured on Router1 to enable Host A to
reach network 172.16.0.0? (Choose two.)
• ip route 172.16.0.0 255.255.0.0 S0/0
• ip route 172.16.0.0 255.255.0.0 S0/1
• ip route 172.16.0.0 255.255.0.0 192.168.0.1
• ip route 172.16.0.0 255.255.0.0 192.168.0.2
• ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0
• ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/1
7. What can be determined from the output shown in the exhibit? (Choose two.)
• Annapolis is a 2611 router that is connected to the S0/0 interface of the Montgomery router.
• All of the routers are connected to Montgomery through an Ethernet switch.
• Montgomery has Layer 2 connectivity with Cumberland.
• Layer 3 connectivity is operational for all of the devices listed in the Device ID column.
• An administrator consoled into the Waldorf router can ping the Brant router.
• Brant, Fisherman, and Potomac are directly connected to Montgomery.
8. Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached
to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network
10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table?
• Both routes are installed and load balancing occurs across both paths.
• The route via Path B is installed because the EIGRP route has the best metric to network
10.2.0.0/16.
• The route via Path A is installed because the static route has the best metric to network
10.2.0.0/16.
• The route via Path B is installed because the EIGRP route has the lowest administrative distance
to network 10.2.0.0/16.
• The route via Path A is installed because the static route has the lowest administrative distance
to network 10.2.0.0/16.
9. Which two statements are true regarding link-state routing protocols? (Choose two.)
• They do not work well in networks that require special heirarchical designs.
• They are aware of the complete network topology.
• They pass their entire routing tables to their directly connected neighbors only.
• They offer rapid convergence times in large networks.
• They rely on decreasing hop counts to determine the best path.
• They do not include subnet masks in their routing updates.
10. A network administrator has configured a default route on Router_A but it is not being shared
with adjacent Router_B and the other routers in the OSPF area. Which command will save the
administrator the time and trouble of configuring this default route on Router_B and all of the other
routers in the OSPF area?
• Router_A(config-router)# ospf redistribute default-route
• Router_B(config-router)# ospf redistribute default-route
• Router_A(config-router)# default-information originate
• Router_B(config-router)# default-information originate
• Router_A(config-router)# ip ospf update-default
• Router_B(config-router)# ip ospf update-default
11. Refer to the exhibit. What are the effects of the exhibited commands on the router?
All passwords are encrypted.
• Only Telnet sessions are encrypted.
• Only the enable password is encrypted.
• Only the enable password and Telnet session are encrypted.
• Enable and console passwords are encrypted.
12. When presented with multiple valid routes to a destination, what criteria does a router use to
determine which routes to add to the routing table?
• The router selects the routes with the best metric. All routes that have the same best metric are
added to the routing table.
• The router first selects routes with the lowest administrative distance. The resulting routes are
then prioritized by metric and the routes with the best metric are added to the routing table.
• The router selects the routes with the lowest administrative distance. All routes with the same
lowest administrative distance are added to the routing table.
• The router installs all routes in the routing table but uses the route with the best metric most when
load balancing.
13. Which statement is true regarding routing metrics?
• All routing protocols use the same metrics.
• EIGRP uses bandwidth as its only metric.
• Routers compare metrics to determine the best route.
• The larger metric generally represents the better path.
14. A router has learned about a network through static and dynamic routing processes. Which
route will be used to reach network 192.168.168.0?
• D 192.168.168.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Ethernet0
• O 192.168.168.0/24 [110/1012] via 192.168.200.1, 00:00:22, Ethernet0
• R 192.168.168.0/24 [120/1] via 192.168.200.1, 00:00:17, Ethernet0
• S 192.168.168.0/24 [1/0] via 192.168.200.1
15. Which three statements are true regarding the encapsulation and de-encapsulation of packets
when traveling through a router? (Choose three.)
• The router modifies the TTL field, decrementing it by one.
• The router changes the source IP to the IP of the exit interface.
• The router maintains the same source and destination IP.
• The router changes the source physical address to the physical address of the exit interface.
• The router changes the destination IP to the IP of the exit interface.
• The router sends the packet out all other interfaces, besides the one it entered the router on.
16. When the show cdp neighbors command is issued from Router C, which devices will be
displayed in the output?
• D, SWH-2
• A, B, D
• SWH-1, SWH-2
• B, D
• SWH-1, A, B
• A, B, D, SWH-1, SWH-2
17. Refer to the exhibit. A network administrator is trying to determine why router JAX has no
OSPF routes in its routing table. All routers are configured for OSPF area 0. From the JAX router,
the administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORL router
but no other router interfaces. What is a logical step that the network administrator should take to
troubleshoot the problem?
• Reboot the routers.
• Change the OSPF process ID on all of the routers to 0.
• Check to see if the cable is loose between ORL and JAX.
• Check to see if CDP packets are passing between the routers.
• Use show and debug commands to determine if hellos are propagating.
18. Using default settings, what is the next step in the router boot sequence after the IOS loads
from flash?
• Perform the POST routine.
• Search for a backup IOS in ROM.
• Load the bootstrap program from ROM.
• Load the running-config file from RAM.
• Locate and load the startup-config file from NVRAM.
19. Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the
three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping
the networks on Router1?
• 172.16.0.0/8
• 172.16.0.0/10
• 172.16.0.0/13
• 172.16.0.0/20
• 172.16.0.0/24
20. The network shown in the diagram is having problems routing traffic. It is suspected that the
problem is with the addressing scheme. What is the problem with the addressing used in the
topology?
• The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that
subnetwork.
• The subnetwork configured on the serial link between Router1 and Router2 overlaps with the
subnetwork
assigned to Ethernet0 of Router3.
• The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the
address for
Serial0 of Router2.
• The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to
Ethernet0 of Router3.
21. Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host
address of 192.168.10.31 with a default gateway of 192.168.10.17. • The PC is not communicating
with the network properly. What is the cause?
• The address is in the wrong subnet.
• 192.168.10.31 is the broadcast address for this subnet.
• The default gateway is incorrect.
• The host address and default gateway are swapped.
22. Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes
down. Which statement is true regarding how the routers in this topology will respond to this
event?
• Router4 will learn about the failed route 30 seconds later in the next periodic update.
• Split horizon will prevent Router4 from forwarding packets to the 10.0.0.0 network until the
holddown timer expires.
• Router5 immediately flushes the unreachable route from its routing table.
• Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.
23. Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose
three.)
• The route to network 172.16.0.0 has an AD of 156160.
• Network 192.168.0.16 can best be reached using FastEthernet0/0.
• The AD of EIGRP routes has been manually changed to a value other than the default value.
• Router1 is running both the EIGRP and OSPF routing process.
• Network 172.17.0.0 can only be reached using a default route.
• No default route has been configured.
24. Refer to the exhibit. What is the most efficient summarization of the routes attached to router
R1?
• 198.18.0.0/16
• 198.18.48.0/21
• 198.18.32.0/22
• 198.18.48.0/23
• 198.18.49.0/23
• 198.18.52.0/22
25. What is the purpose of the TTL field within an IP packet header?
• clears an unreachable route from the routing table after the invalid timer expires
• prevents regular update messages from inappropriately reinstating a route that may have gone
bad
• removes an unreachable route from the routing table after the flush timer expires
• limits the period of time or number of hops a packet can traverse through the network before it
should be
discarded
• used to mark the route as unreachable in a routing update that is sent to other routers
26. Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to
configure EIGRP on the Paris router? (Choose three.)
• Paris(config)# router eigrp 100
• Paris(config)# router eigrp
• Paris(config-router)# network 192.168.6.0
• Paris(config-router)# network 192.168.7.0
• Paris(config-router)# network 192.168.8.0
• Paris(config-router)# network 192.168.9.0
27. What does RIP use to reduce convergence time in a larger network?
• It reduces the update timer to 15 seconds if there are more then 10 routes.
• It uses triggered updates to announce network changes if they happen in between the periodic
updates.
• It uses random pings to detect if a pathway is down and therefore is preemptive on finding
networks that
are down.
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