Computer networks quiz 1

What is the administrative distance of OSPF?

• 90

• 100

• 110

• 120

Which two of the following commands will place network 10.2.3.0/24 into area 0?

• router ospf 10

• network 10.0.0.0

• network 10.2.3.0 0.0.0.255 area0

• network 10.2.3.0 0.0.0.255 area 0

Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

• The updated information will be added to the existing routing table.

• The update will be ignored and no further action will occur.

• The updated information will replace the existing routing table entry.

• The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.

Which two of the following are true regarding the distance-vector and link-state routing protocols?

 

1. Link state sends its complete routing table out all active interfaces on periodic time intervals.

2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.

3. Link state sends updates containing the state of its own links to all routers in the internetwork.

4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.

• 1 only

• 3 only

• 2 and 3 only

• 1 and 3

Which statement is true regarding classless routing protocols?

1.     The use of discontiguous networks is not allowed.

2. The use of variable length subnet masks is permitted.

3. RIPv1 is a classless routing protocol.

4. IGRP supports classless routing within the same autonomous system.

5. RIPv2 supports classless routing.

• 1, 3 and 5

• 2, 3 and 5

• 3 and 4

• 2 and 5

Error control is needed at the transport layer because of potential errors occurring _____.

• from transmission line noise

• in routers

• from out-of-sequence delivery

• from packet losses.

All objects managed by SNMP are given an object identifier. The object identifier always starts with  ________

• 1.3.6.1.2.1

• 1.3.6.1.2.2

• 1.3.6.1.3.2

• 1.3.6.1.3.3

You are working with a network that has the network ID 172.16.0.0, and you require 25 subnets for your company and an additional 30 for the company that will merge with you within a month. Each network will contain approximately 600 nodes. What subnet mask should you assign?

• 255.255.192.0

• 255.255.224.0

• 255.255.240.0

• 255.255.252.0

________ runs the SNMP client program ; ______ runs the SNMP server program.

• Manager, client

• Client , manager

• Client, server

• Manager, agent

• Agent, manager

SMI has two broad categories of datatypes  : ___  and ________

• Simple, complex

• Simple , structured

• Simple sequence

• Sequence, sequence of