CCNP STUDY TEST QUESTIONS AND
CORRECT ANSWERS ALREADY
PASSED
What multicast IP does EIGRP use to send hello packets? - Answer-224.0.0.10
What are the requirements to form EIGRP neighbors? - Answer-1. Interface IPs in the
same subnet
2. AS number must match
3. K Values must match
What is the hello timer in EIGRP? - Answer-The interval at which the router will send
EIGRP packets (seconds)
What are the default EIGRP hello timer intervals? - Answer-LAN: 5 seconds
T1 (WAN): 60 seconds
What command is used to manually modify hello timers in EIGRP? - Answer-Under
router interface config mode:
ip hello-interval eigrp <as> <interval>
ex. ip hello-interval eigrp 12 20
What are the default hold timers for EIGRP? - Answer-LAN: 15 seconds
T1 (WAN): 180 seconds
What command is used to manually modify hold timers interval in EIGRP? - Answer-
Under router interface config mode:
ip hold-time eigrp <as> <interval>
ex. ip hold-time eigrp 12 200
What authentication type is supported in EIGRP? - Answer-md5
What commands are used to verify EIGRP authentication / key chain? - Answer-1. show
key chain
, 2. debug eigrp packets
Is the hello timer used on the local router or distant in EIGRP? - Answer-Hello timer is
used on the local router, it determines how often the router will send an EIGRP hello
packet out of that interface
Is the hold timer value used on the local or neighbor router in EIGRP? - Answer-The
hold timer value is used by the neighbor router to determine when the local router is not
available
What are hello and hold timer intervals used for in EIGRP? - Answer-They affect
network convergence speeds
In EIGRP, what is the difference between using the "network" command and
"redistribute connected" command? - Answer-Connected routes that are redistributed
into EIGRP will have a much higher AD (170) vs. routes advertised using the "network"
command (90)
What commands are used to verify hello and hold timer intervals? - Answer-1. sh ip
eigrp interface detail fa0/0
2. sh ip eigrp neighbors
What are the configuration steps for EIGRP authentication? - Answer-Key chain
configuration:
1. key chain TEST
2. key-string cisco
Interface authentication:
1. interface fa0/0
2. ip authentication mode eigrp 12 md5
3. ip authentication key-chain eigrp 12 TEST
What algorithm does EIGRP use for loop-free path calculation? - Answer-DUAL
(Diffusing Update ALgorithm)
What does EIGRP use for metric calculation by default? - Answer-Bandwidth and Delay
What are the 3 steps in EIGRP for network convergence? - Answer-1. Neighbor
relationship established
2. Topology exchange
3. DUAL to populate routing table
What type of packet does EIGRP use to determine neighbors? - Answer-Hello packets
CORRECT ANSWERS ALREADY
PASSED
What multicast IP does EIGRP use to send hello packets? - Answer-224.0.0.10
What are the requirements to form EIGRP neighbors? - Answer-1. Interface IPs in the
same subnet
2. AS number must match
3. K Values must match
What is the hello timer in EIGRP? - Answer-The interval at which the router will send
EIGRP packets (seconds)
What are the default EIGRP hello timer intervals? - Answer-LAN: 5 seconds
T1 (WAN): 60 seconds
What command is used to manually modify hello timers in EIGRP? - Answer-Under
router interface config mode:
ip hello-interval eigrp <as> <interval>
ex. ip hello-interval eigrp 12 20
What are the default hold timers for EIGRP? - Answer-LAN: 15 seconds
T1 (WAN): 180 seconds
What command is used to manually modify hold timers interval in EIGRP? - Answer-
Under router interface config mode:
ip hold-time eigrp <as> <interval>
ex. ip hold-time eigrp 12 200
What authentication type is supported in EIGRP? - Answer-md5
What commands are used to verify EIGRP authentication / key chain? - Answer-1. show
key chain
, 2. debug eigrp packets
Is the hello timer used on the local router or distant in EIGRP? - Answer-Hello timer is
used on the local router, it determines how often the router will send an EIGRP hello
packet out of that interface
Is the hold timer value used on the local or neighbor router in EIGRP? - Answer-The
hold timer value is used by the neighbor router to determine when the local router is not
available
What are hello and hold timer intervals used for in EIGRP? - Answer-They affect
network convergence speeds
In EIGRP, what is the difference between using the "network" command and
"redistribute connected" command? - Answer-Connected routes that are redistributed
into EIGRP will have a much higher AD (170) vs. routes advertised using the "network"
command (90)
What commands are used to verify hello and hold timer intervals? - Answer-1. sh ip
eigrp interface detail fa0/0
2. sh ip eigrp neighbors
What are the configuration steps for EIGRP authentication? - Answer-Key chain
configuration:
1. key chain TEST
2. key-string cisco
Interface authentication:
1. interface fa0/0
2. ip authentication mode eigrp 12 md5
3. ip authentication key-chain eigrp 12 TEST
What algorithm does EIGRP use for loop-free path calculation? - Answer-DUAL
(Diffusing Update ALgorithm)
What does EIGRP use for metric calculation by default? - Answer-Bandwidth and Delay
What are the 3 steps in EIGRP for network convergence? - Answer-1. Neighbor
relationship established
2. Topology exchange
3. DUAL to populate routing table
What type of packet does EIGRP use to determine neighbors? - Answer-Hello packets
