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EIGRP and OSPF - Networking MCQ Questions and answers | Technical Aptitude

Learn EIGRP(Enhanced Interior Gateway Routing Protocol) and OSPF(Open Shortest Path First) mcq questions and answers with easy and logical explanations for various competitive examination, interview and entrance test Page-2 section-1

11
What are reasons for creating OSPF in a hierarchical design?
1. To decrease routing overhead
2. To speed up convergence
3. To confine network instability to single areas of the network
4. To make configuring OSPF easier
Discuss
Answer & Solution
Answer: Option A
Solution:
OSPF is created in a hierarchical design, not a flat design like RIP. This decreases routing overhead, speeds up convergence, and confines network instability to a single area of the network.
12
Which two of the following commands will place network 10.2.3.0/24 into area 0?
1. router eigrp 10
2. router ospf 10
3. network 10.0.0.0
4. network 10.2.3.0 0.0.0.255 area0
5. network 10.2.3.0 0.0.0.255 area 0
Discuss
Answer & Solution
Answer: Option C
Solution:
To enable OSPF, you must first start OSPF using a Process ID. The number is irrelevant; just choose a number from 1 to 65,535 and you're good to go. After you start the OSPF process, you must configure any network that you want advertised via OSPF using wildcards and the area command. Statement (4) is wrong because there must be a space after the parameter area and before you list the area number.
13
If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?
Discuss
Answer & Solution
Answer: Option B
Solution:
At the moment of OSPF process startup, the highest IP address on any active interface will be the Router ID (RID) of the router. If you have a loopback interface configured (logical interface), then that will override the interface IP address and become the RID of the router automatically.
14
Which of the following protocols support VLSM, summarization, and discontiguous networking?
1. RIPv1
2. IGRP
3. EIGRP
4. OSPF
5. BGP
6. RIPv2
Discuss
Answer & Solution
Answer: Option C
Solution:
RIPv1 and IGRP are true distance-vector routing protocols and can't do much, really-except build and maintain routing tables and use a lot of bandwidth! RIPv2, EIGRP, and OSPF build and maintain routing tables, but they also provide classless routing, which allows for VLSM, summarization, and discontiguous networking.
15
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 tells you he still can't see any routes in the routing table. What configuration error did the administrator make?
Discuss
Answer & Solution
Answer: Option A
Solution:
The administrator typed in the wrong wildcard mask configuration. The wildcard should have been 0.0.0.255.
16
Which of the following network types have a designated router and a backup designated router assigned?
1. Broadcast
2. Point-to-point
3. NBMA
4. NBMA point-to-point
Discuss
Answer & Solution
Answer: Option B
Solution:
No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology. DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-Broadcast Multi-Access (NBMA) network by default.
17
Which type of OSPF network will elect a backup designated router?
1. Broadcast multi-access
2. Non-broadcast multi-access
3. Point-to-point
4. Broadcast multipoint
Discuss
Answer & Solution
Answer: Option A
Solution:
DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-broadcast multi-access (NBMA) network by default. No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology.
18
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?
Discuss
Answer & Solution
Answer: Option D
Solution:
The show ip eigrp neighbors command allows you to check the IP addresses as well as the retransmit interval and queue counts for the neighbors that have established an adjacency.
19
Which of the following network types have a designated router and a backup designated router assigned? 1. Broadcast 2. Point-to-point 3. NBMA 4. NBMA point-to-point
Discuss
Answer & Solution
Answer: Option B
Solution:
No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology. DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-Broadcast Multi-Access (NBMA) network by default.