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EIGRP & OSPF Questions 2

February 1st, 2021 in ENCOR 350-401 Go to comments

Question 1

Explanation

Broadcast and Non-Broadcast networks elect DR/BDR while Point-to-point/multipoint do not elect DR/BDR. Therefore we have to set the two Gi0/0 interfaces to point-to-point or point-to-multipoint network to ensure that a DR/BDR election does not occur.

Question 2

Question 3

Question 4

Explanation

The “network 20.0.0.0 0.0.0.255 area 0” command on R2 did not cover the IP address of Fa1/1 interface of R2 so OSPF did not run on this interface. Therefore we have to use the command “network 20.1.1.2 0.0.255.255 area 0” to turn on OSPF on this interface.

Note: The command “network 20.1.1.2 0.0.255.255 area 0” can be used too so this answer is also correct but answer C is the best answer here.

The “network 0.0.0.0 255.255.255.255 area 0” command on R1 will run OSPF on all active interfaces of R1.

Question 5

Question 6

Explanation

We must reconfigure the IP address after assigning or removing an interface to a VRF. Otherwise that interface does not have an IP address.

Question 7

Explanation

By default, EIGRP metric is calculated:

metric = bandwidth + delay

While OSPF is calculated by:

OSPF metric = Reference bandwidth / Interface bandwidth in bps

(Or Cisco uses 100Mbps (108) bandwidth as reference bandwidth. With this bandwidth, our equation would be:

Cost = 108/interface bandwidth in bps)

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