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Most recent CCNA 2 Final Answers
1.Which of the following are primary functions of a router? (Choose two.)
packet switching
path selection
2.A network administrator is in charge of two separate networks that share a single building. What device will be required to connect the two networks and add a common connection to the Internet that can be shared?
router
3.A router boots and enters setup mode. What is the reason for this?
The configuration file is missing from NVRAM.
4.Refer to the exhibit. A network administrator adds this command to router R1: ip route 192.168.2.0 255.255.255.0 S0/0/0. What is the result of adding this command?
A static route is established.
5.In a complex lab test environment, a router has discovered four paths to 192.168.1.0/24 via the use of the RIP routing process. Which route will be installed in the routing table after the discovery of all four paths?
R 192.168.1.0/24 [120/1] via 192.168.100.1, 00:00:17, Serial0/0/1
6.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 maintains the same source and destination IP.
The router changes the source physical address to the physical address of the exit interface.
7.Refer to the exhibit. Router R1 receives a packet for destination 192.168.1.10. Which route will be preferred for this packet?
through the Fa0/1 interface
8.Refer to the exhibit. Which two routes are level 1 ultimate routes? (Choose two.)
192.168.1.0
192.168.2.0
9.Which routing protocol by default uses bandwidth and delay to calculate the metric of a route?
EIGRP
10.Which statement is true about the metrics used by routing protocols?
A metric is a value used by a particular routing protocol to compare paths to remote networks.
11.Refer to the exhibit. A router learns a route to the 192.168.6.0 network, as shown in the output of the show ip rip database command. However, upon running the show ip route command, the network administrator sees that the router has installed a different route to the 192.168.6.0 network learned via EIGRP. What could be the reason for the missing RIP route?
Compared to RIP, EIGRP has a lower administrative distance.
12.Refer to the exhibit. RIPv1 has been used as a routing protocol on the network. A new 172.16.2.0/24 network has been added on router R2 and configured under the RIP routing process. When will R1 converge?
after R1 receives triggered updates from R2
13.Which two statements are true for link-state routing protocols? (Choose two.)
Routers that run a link-state protocol can establish a complete topology of the network.
The shortest path first algorithm is used.
14.An administrator is configuring Router1 so that it can connect to Router2 by using IP. Which protocol can be used by Router1 to determine the IP address of Router2 when they are directly connected and only Layer 2 connectivity exists between them?
CDP
15.Refer to the exhibit. A device is required to complete the connection between router R1 and the WAN. Which two devices can be used for this? (Choose two.)
a CSU/DSU device
a modem
16.What can be determined from the output shown in the exhibit? (Choose two.)
Montgomery has Layer 2 connectivity with Cumberland.
Brant, Fisherman, and Potomac are directly connected to Montgomery.
17.Refer to the exhibit. Which route in the routing table of R1 will be discarded by its neighboring router?
192.168.4.0
18.Refer to the exhibit. Based on the partial output in the exhibit, why can users establish a console connection to this router without entering a password?
The login command was not entered on the console line.
19.Refer to the exhibit. An administrator is attempting to configure a router by copying and pasting the commands that are shown in the exhibit. However, only one of the FastEthernet interfaces is coming up. What is the problem?
Both interfaces are in the same IP subnet.
20.Refer to the exhibit. The network administrator has run the following command on R1.
R1(config)# ip route 192.168.2.0 255.255.255.0 172.16.1.2
What is the result of running this command?
Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.
21.Refer to the exhibit. The command ip route 0.0.0.0 0.0.0.0 S0/0/0 is run on router R2. What are the two results of this command? (Choose two.)
A static route will be updated in the routing table.
The route will be specified as the default route for all networks not defined in the routing table.
22.Refer to the exhibit. All routers are running the same routing protocol. Based on the exhibit and its displayed commands, which statement is true?
The link to the ISP is not advertised by the routing protocol process.
23.The command ip route 192.168.2.0 255.255.255.0 172.16.2.2 was entered into the router. After network changes were made, the new next hop for the 192.168.2.0/24 network is 172.16.5.1. What should an administrator do so that the router will use the new next hop to reach the 192.168.2.0 network?
Negate the original command and enter a new static route with the new next hop.
24.Refer to the exhibit. On the basis of the show running-config output, which option correctly reflects the routes that will be listed in the R2 routing table?
s 172.16.1.0 is derectly connected , serial
c 172.16.2.0 is derectly connected , serial
c 192.168.2.0 is derectly connected , serial
c 0.0.0.0 is derectly connected , serial 0/0
25.Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem?
Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.
26.Refer to the exhibit. Which combination of network ID and subnet mask can be used to meet the 24 host requirement of the LAN that is attached to Router3?
192.168.0.192/27
27.Refer to the exhibit. The networks that are connected to R1 have been summarized for R2 as 192.168.136.0/21. Which packet destination address will R2 forward to R1?
192.168.142.1
28.A network administrator has been asked to configure a network using a classful IP addressing scheme. Which statement is true about the IP addressing that will be used?
The subnet mask for classful IP addresses can be determined by the value of the first octet of the IP address.
29.Which range of IP addresses will be used by RIPv2, EIGRP, and OSPF routing protocols to send routing advertisements?
11100000 00000000 00000000 00000000 11101111 11111111 11111111 11111111
30.How will a router that is configured with a classless routing protocol determine the subnet mask that should be assigned to routes that are learned from neighboring classless routers?
The subnet mask that is included in the routing updates will be used.
31.Refer to the exhibit. Both routers are using the RIPv2 routing protocol and static routes are undefined. R1 can ping 192.168.2.1 and 10.1.1.2, but is unable to ping 192.168.4.1.
The 192.168.4.0 network is not included in the RIP configuration of R2.
32.Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router commands. On the basis of the exhibit, which three statements are true? (Choose three.)
The missing information for Blank 1 is the command show ip route.
The missing information for Blank 2 is the number 120.
The missing information for Blank 3 is the letter C.
33.Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2?
split horizon
34.How does route poisoning prevent routing loops?
Failed routes are advertised with a metric of infinity.
35.Refer to the exhibit. R1 and R2 are both configured with RIPv1. Beginning from global configuration mode, what comand or commands will eliminate RIP updates on the Ethernet segment of R2?
R2# configure terminal
R2(config)# router rip
R2(config-router)# passive-interface FastEthernet0/0
36.Refer to the exhibit. All routers are configured with RIPv2 active on all interfaces. Automatic summarization is in effect. Why does the routing table on R3 include the 209.165.200.228/30 network but not the 172.30.1.0/24 and 172.30.2.0/24 networks?
The 172.30.0.0/16 subnets are discontiguous.
37.Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network?
The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces.
38.Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.)
All routes are stable.
The show ip eigrp topology command has been run on R1.
39.Refer to the exhibit. Host A is having problems accessing server A. All routers have the same EIGRP configuration as router RTR_A. What should be done so that host A can access server A?
Add the command no auto-summary on all routers.
40.When would the network administrator use the ip bandwidth-percent eigrp as-number percent command?
when there is a low bandwidth connection
41.Refer to the exhibit. What information can be determined from the displayed output?
Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface.
42.Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1?
DUAL will query neighbors for a route to network 192.168.1.0.
43.Which statement correctly describes a feasible successor in EIGRP?
It is a backup route that is stored in the topology table.
44.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?
Use show and debug commands to determine if hellos are propagating.
45.Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.)
network address
wildcard mask
area ID
46.Refer to the exhibit. R1 and R2 are unable to establish an adjacency. What two configuration changes will correct the problem? (Choose two.)
Configure the routers in the same area.
Match the hello and dead timers on both routers.
47.A network administrator is analyzing routing update behavior on a network that has both EIGRP and OSPF configured on all routers. Both protocols appear in the output of show ip protocols. However, only EIGRP internal routes appear in the routing tables. Which statement correctly explains the scenario?
The EIGRP protocol has a lower administrative distance than OSPF.
48.Refer to the exhibit. All routers are configured for OSPF area 0. The network administrator requires that R2 always be the DR and maintain adjacency.
Which two configurations can achieve this? (Choose two.)
Change the priority values of the Fa0/0 interfaces of R1 and R3 to 0.
Configure a loopback interface on R2, with an IP address higher than any IP
address on the other routers.
49.Refer to the exhibit. A network administrator has configured OSPF using the following command:
network 192.168.1.32 0.0.0.31 area 0
Which router interface will participate in OSPF?
Serial0/0/0
50.Which two statements are true for OSPF Hello packets? (Choose two.)
They are used for dynamic neighbor discovery.
They are used to maintain neighbor relationships.
