Question 1

Actual communication in a circuit-switched network requires

Accepted Answer

A) one phase. 
B) two phases. 
C) three phases. 
D) four phases. C

Question 2

Circuit Switched Networks are used in

Accepted Answer

A) cellular network. 
B) satellite network. 
C) cable network. 
D) telephone network. D

Question 3

Three methods of switching are

Accepted Answer

A) circuit switching, packet switching, and protocol switching. 
B) circuit switching, packet switching, and message switching. 
C) loop switching, packet switching, and message switching. 
D) node switching, packet switching, and message switching. B

Question 4

A switched network consists of a series of interlinked nodes is called

Accepted Answer

A) frames. 
B) packets. 
C) switches. 
D) links.

Question 5

A Circuit-Switched Network is made of a set of switches connected by physical

Accepted Answer

A) links. 
B) media. 
C) nodes. 
D) frames.

Question 6

Virtual-Circuit Networks and datagram networks are sub categories of

Accepted Answer

A) message-switched networks. 
B) packet-switched networks. 
C) circuit-switched networks. 
D) none of them.

Question 7

The Checksum is used in Internet by several protocols although not at the

Accepted Answer

A) session layer. 
B) transport layer. 
C) network layer. 
D) data link layer.

Question 8

Asynchronous Transfer Mode (ATM) network is an example of

Accepted Answer

A) packet switching network. 
B) datagram networks. 
C) virtual circuit network. 
D) message switched network.

Question 9

A ________switched network is made of switches connected by physical links, in which each link is divided into

Accepted Answer

A) line-switched 
B) frame-switched 
C) circuit-switched 
D) none of the above

Question 10

Which frame completes entries in switching tables

Accepted Answer

A) acknowledgment frame. 
B) setup frame. 
C) routing frame. 
D) none.

Question 11

Term that performs physical and data link functions of packet switch is called

Accepted Answer

A) input port. 
B) output port. 
C) routing processor. 
D) switching fabric.

Question 12

Circuit-Switched Networks are not as efficient as other two types of networks because resources are unavailable to

Accepted Answer

A) other connections. 
B) same connections. 
C) other switches. 
D) other networks.

Question 13

A switch in a datagram network uses a routing table that is based on the

Accepted Answer

A) destination address. 
B) sender address. 
C) routing table. 
D) header.

Question 14

A Virtual-Circuit Network (VCN) is normally implemented in the

Accepted Answer

A) session layer. 
B) data link layer. 
C) network layer. 
D) physical layer.

Question 15

In Circuit Switching, resources need to be reserved during the

Accepted Answer

A) data transfer phase. 
B) teardown phase.. 
C) setup phase. 
D) propagation phase.

Question 16

Routing processor searches routing table is called

Accepted Answer

A) switch fabric. 
B) buffer. 
C) table lookup. 
D) rolling table.

Question 17

Switching in Internets done by using datagram approach to packet switching at the

Accepted Answer

A) network layer. 
B) application layer. 
C) data link layer. 
D) physical layer..

Question 18

In a packet-switched network, resources are allocated

Accepted Answer

A) randomly. 
B) on demand. 
C) reserved already. 
D) both a and c.

Exam 4: Network Switching and Routing: Understanding the Basics of Circuit-Switched and Packet-Switched Networks