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

Question 1

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

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

Answer 1

data link layer.

Question 2

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

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

Answer 2

network layer.

Question 3

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

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

Answer 3

links.

Question 4

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

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

Question 5

Routing processor searches routing table is called

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

Question 6

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

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

Question 7

Which frame completes entries in switching tables

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

Question 8

Virtual-Circuit Networks and datagram networks are sub categories of

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

Question 9

Actual communication in a circuit-switched network requires

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

Question 10

In a packet-switched network, resources are allocated

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

Question 11

In Circuit Switching, resources need to be reserved during the

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

Question 12

Circuit Switched Networks are used in

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

Question 13

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

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

Question 14

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

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

Question 15

Asynchronous Transfer Mode (ATM) network is an example of

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

Question 16

Three methods of switching are

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.

Question 17

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

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

Question 18

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

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