Eigrp 2 — Test 1

Correct Answer: A. A. True
Explanation: EIGRP stands for Enhanced Interior Gateway Routing Protocol is a routing protocol designed by Cisco. It is available only on Cisco routers.

Correct Answer: A. A. K-values
Explanation: EIGRP metric is K-values which are integers from 0 to 128. They are used to calculate the overall EIGRP cost with bandwidth and delay metrics.

Correct Answer: D. D. All of the mentioned
Explanation: EIGRP supports variable and fixed length subnetting, Auto summary, and Unequal cast load balancing to provide efficient routing functionality on Cisco routers.

Correct Answer: A. A. 5 seconds (LAN), 60 seconds (WAN)
Explanation: EIGRP routers broadcast the hello packets frequently to familiarize with the neighbors. EIGRP routers send the hello message after every 5 seconds on LAN, and every 60 seconds on WAN.

Correct Answer: A. A. 90
Explanation: Routers use the metric of administrative distance to select the best path when there are different routes to the same destination from two different routing protocols as it is a measure of reliability of routing protocols. Administrative distance for internal EIGRP is 90.

Correct Answer: D. D. All of the mentioned
Explanation: The EIGRP metric values are Delay, Bandwidth, and MTU. MTU stands for Maximum Transmission Unit. They are combined together to give the overall EIGRP cost in K-values.

Correct Answer: A. A. Ip default network
Explanation: IP default network command is used to find the default gateway in Cisco router. If the router finds routes to the node, it considers the routes to that node for installation as the gateway to it.

Correct Answer: B. B. 170
Explanation: Routers use the metric of administrative distance to select the best path when there are different routes to the same destination from two different routing protocols as it is a measure of reliability of routing protocols. Administrative distance for external EIGRP is 170.

Correct Answer: B. B. Dual
Explanation: EIGRP uses the DUAL algorithm for finding shortest path. DUAL stands for diffusing update algorithm and it is used to prevent routing loops by recalculating routes globally.

Correct Answer: A. A. Feasible successor
Explanation: Feasible successor is the backup path. The backup path is used alternatively used whenever the best path fails. It is not used primarily because it is comparatively expensive than the best path.