CCNA: Cisco Certified Network Associate
Study Guide Questions with Correct
Answers
Your company is running IGRP using as AS of 10. You want to configure EIGRP on the network but
want to migrate slowly to EIGRP and don't want to configure redistribution. What command would
allow migration over time to EIGRP without configuring redistribution - Correct Answer router eigrp
10
Which EIGRP information is hel in RAM and maintained through the use of Hello and update
packets? - Correct Answer Neighbor table
Topology table
Which of the following describe the process identifier that is used to run OSPF on a router? - Correct
Answer It is locally significant
It is needed to identify a unique instance of an OSPF database
Where are EIGRP successor routes stored? - Correct Answer In the routing and topology table
Which command will display all the EIGRP feasible successor routes known to a router? - Correct
Answer show ip eigrp topology
You get a call from a network administrator who tells you that he typed the following into his router:
Router(config)#router ospf 1
Router(config-router)#network 10.0.0.0 255.0.0.0 area 0
He still can't see any routes in the routing table. What configuration error did the administrator
make? - Correct Answer The wildcard mask is incorrect
Which of the following protocols support VLSM, summarization, and discontiguous networking? -
Correct Answer EIGRP
OSPF
, RIPv2
What is true regarding OSPF areas? - Correct Answer The backbone area is also called area 0
If your design is hierarchical, then you don't need multiple areas
All areas must connect to area 0
Which network types have a designate router and a backup designated router assigned? - Correct
Answer Broadcast
NBMA
A network adminstrator needs to configure a router with a distance-vector protocol that allows
classless routing. What satisfies those requirements? - Correct Answer EIGRP
You need the IP address of the devices with which the router has established an adjacency. Also, the
retransmit interval and the queue counts for the adjacent routers need to be checked. What
command will display the required information? - Correct Answer show ip eigrp neighbors
An adjacency relationship can't be established on a common Ethernet link between 2 routers.
Looking at the output below, what is the problem?
RouterA#
Ethernet0/0 is up, line protocol is up
Internet Address 172.16.1.2/16, Area 0
Process ID 2, Router ID 172.126.1.1, Network Type BROADCAST, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 172.16.1.2, interface address 172.16.1.1
No backup designated router on this network
Timer intervals configured, Hello 5, Dead 20, Wait 20, Retransmit 5
RouterB#
Ethernet0/0 is up, line protocol is up
Internet Address 172.16.1.1/16, Area 0
Process ID 2, Router ID 172.126.1.1, Network Type BROADCAST, Cost: 10
Study Guide Questions with Correct
Answers
Your company is running IGRP using as AS of 10. You want to configure EIGRP on the network but
want to migrate slowly to EIGRP and don't want to configure redistribution. What command would
allow migration over time to EIGRP without configuring redistribution - Correct Answer router eigrp
10
Which EIGRP information is hel in RAM and maintained through the use of Hello and update
packets? - Correct Answer Neighbor table
Topology table
Which of the following describe the process identifier that is used to run OSPF on a router? - Correct
Answer It is locally significant
It is needed to identify a unique instance of an OSPF database
Where are EIGRP successor routes stored? - Correct Answer In the routing and topology table
Which command will display all the EIGRP feasible successor routes known to a router? - Correct
Answer show ip eigrp topology
You get a call from a network administrator who tells you that he typed the following into his router:
Router(config)#router ospf 1
Router(config-router)#network 10.0.0.0 255.0.0.0 area 0
He still can't see any routes in the routing table. What configuration error did the administrator
make? - Correct Answer The wildcard mask is incorrect
Which of the following protocols support VLSM, summarization, and discontiguous networking? -
Correct Answer EIGRP
OSPF
, RIPv2
What is true regarding OSPF areas? - Correct Answer The backbone area is also called area 0
If your design is hierarchical, then you don't need multiple areas
All areas must connect to area 0
Which network types have a designate router and a backup designated router assigned? - Correct
Answer Broadcast
NBMA
A network adminstrator needs to configure a router with a distance-vector protocol that allows
classless routing. What satisfies those requirements? - Correct Answer EIGRP
You need the IP address of the devices with which the router has established an adjacency. Also, the
retransmit interval and the queue counts for the adjacent routers need to be checked. What
command will display the required information? - Correct Answer show ip eigrp neighbors
An adjacency relationship can't be established on a common Ethernet link between 2 routers.
Looking at the output below, what is the problem?
RouterA#
Ethernet0/0 is up, line protocol is up
Internet Address 172.16.1.2/16, Area 0
Process ID 2, Router ID 172.126.1.1, Network Type BROADCAST, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 172.16.1.2, interface address 172.16.1.1
No backup designated router on this network
Timer intervals configured, Hello 5, Dead 20, Wait 20, Retransmit 5
RouterB#
Ethernet0/0 is up, line protocol is up
Internet Address 172.16.1.1/16, Area 0
Process ID 2, Router ID 172.126.1.1, Network Type BROADCAST, Cost: 10
