Chapter 2: Quiz – EIGRP (Answers) CCNPv8 ENARSI

1. Which two protocols are allowed to be routed by EIGRP as a consequence of the PDM feature? (Choose two.)

  • IPv4
  • TCP
  • IPv6
  • UDP
  • RTP

Explanation: Protocol-dependent modules (PDM) allow EIGRP to route for various Layer 3 protocol packets. TCP and UDP are Layer 4 protocols and RTP is used by EIGRP to guarantee delivery of packets.

2. Which bandwidth value is used when calculating the EIGRP metric of a route?

  • the fastest bandwidth of all interfaces on the router
  • the slowest bandwidth of all interfaces on the router
  • the fastest bandwidth of all outgoing interfaces between the source and destination
  • the slowest bandwidth of all outgoing interfaces between the source and destination

Explanation: The bandwidth factor that is used to calculate the composite metric of the EIGRP is defined as the slowest bandwidth of all outgoing interfaces between the source and destination.

3. Refer to the exhibit. Which statement describes the result of the last entry in the exhibited configuration?

Chapter 2: Quiz - EIGRP (Answers) CCNPv8 ENARSI 1

  • The routing table will include up to four unequal-cost routes learned via EIGRP.
  • The routing table will include any route learned via EIGRP with a metric less than four times the successor metric.
  • The routing table will include up to two equal-cost routes learned via EIGRP for the two advertised networks.
  • The routing table will include all routes learned via EIGRP with a metric less than four times the feasible distance of the advertised networks.

Explanation: With the variance 4 command, the 4 indicates the routing table will include any route learned via EIGRP which has a metric that is less than four times the metric of the successor route.

4. What is the administrative distance of externally learned EIGRP routes?

  • 170
  • 90
  • 110
  • 120

Explanation: There are multiple administrative distances assigned to EIGRP routes. An administrative distance of 170 is used for external EIGRP routes, which could be routes learned from another routing protocol and redistributed into EIGRP.

5. Which protocol is used by EIGRP for delivering and receiving EIGRP packets?

  • RTP 
  • TCP
  • UDP
  • ICMP

Explanation: There are five packet types used by EIGRP:

  • Hello
  • Update
  • Request
  • Query
  • Reply

These packets are sent using the Reliable Transport Protocol (RTP) for either reliable or unreliable delivery to neighbor routers.

6. Which destination MAC address is used when a multicast EIGRP packet is encapsulated into an Ethernet frame?

  • 01-00-5E-00-00-09
  • 01-00-5E-00-00-10
  • 01-00-5E-00-00-0A
  • 01-00-5E-00-00-0B

Explanation: When an EIGRP multicast packet is encapsulated into an Ethernet frame, the destination MAC address is 01-00-5E-00-00-0A.

7. Which two parameters are used by EIGRP as metrics to select the best path to reach a network? (Choose two.)​

  • hop count
  • bandwidth
  • jitter
  • resiliency
  • delay
  • confidentiality

Explanation: EIGRP uses bandwidth, delay, load, and reliability as metrics for selecting the best path to reach a network.​

8. What are three features of EIGRP? (Choose three.)

  • uses the Shortest Path First algorithm
  • establishes neighbor adjacencies
  • uses the Reliable Transport Protocol
  • sends full routing table updates periodically
  • broadcasts updates to all EIGRP routers
  • supports equal and unequal cost load balancing

Explanation: EIGRP uses the DUAL algorithm, sends partial and bounded updates, and multicasts updates to other EIGRP routers.

9. Which three metric weights are set to zero by default when costs are being calculated using the EIGRP classic metric? (Choose three.)

  • K1
  • K2
  • K3
  • K4
  • K5
  • K6

Explanation: In the cost calculation by the EIGRP classic metric, the weights K1 and K3 are set to one, and K2, K4, and K5 are set to zero by default. The weight K6 is used for EIGRP wide metric calculation.

10. Refer to the exhibit. Which command was used to generate this output?

Chapter 2: Quiz - EIGRP (Answers) CCNPv8 ENARSI 2

  • show ip eigrp neighbors
  • show ip eigrp topology all-links
  • show ip eigrp traffic
  • show ip protocols

Explanation: This command is used to verify which routing protocol is configured, the AS number, and whether automatic summarization is enabled.

11. What two conditions will result in an EIGRP route going into the active state? (Choose two.)

  • One neighbor has not met the feasibility condition.
  • The router is not sending queries.
  • The successor is down.
  • There is no feasible successor.
  • The network has been recalculated.

Explanation: If a successor is no longer available, and there is no feasible successor, an EIGRP route will be put into the active state while the router actively searches for a new path to the destination.


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