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NWC203 1-20

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which of the following networks use store-and-forward switching operation?

a)

Computer networks

b)

Telegraph networks

c)

Telephone networks

d)

Wireless Networks

2.

There are similarities between message switching and packet switching. Which of following that applies to packet switching but not to message switching?

a)

Variable length of information block

b)

Supporting multiple applications

c)

Store-and-forward

d)

All of the above

3.

Which of the following networks can be connection-oriented?

a)

Telegraph networks

b)

Computer networks

c)

Telephone networks

d)

All of the above

4.

A protocol is a set of precise and unambiguous rules that governs

a)

How two or more communicating entities in a layer are to interact

b)

Messages that can be sent and received

c)

Actions that are to be taken when a certain event occurs

d)

All of the above

5.

DNS is a domain-name-service that responds to queries of domain name to IP address or IP address to domain name. DNS uses services provided by

a)

TCP

b)

UDP

c)

HTTP

d)

None of the above

6.

A network used to join the individual networks at different sites into one extended network is called

a)

PAN

b)

LAN

c)

SAN

d)

VPN

7.

Upon receipt of a bad segment, UDP?

a)

It does flow control

b)

It does not do flow and error control

c)

It does error control

d)

Retransmission

8.

Which of following protocol is HTTP built upon?

a)

IP

b)

TCP

c)

UDP

d)

SMTP

9.

Which of following requirements are necessary for packet networks to support multiple and diverse applications?

a)

Transfer arbitrary message size

b)

Low delay for interactive applications

c)

Packets have maximum length

d)

All of the above

10.

What was the concern of the telephone system that motivated the ARPANET design?

a)

Scalability

b)

Vulnerability

c)

Efficiency

d)

None of the above

11.

Which of the following is an application layer protocol?

a)

HTTP

b)

UDP

c)

DNS

d)

TCP

12.

Which of the following are features of ARPANET design?

a)

Connectionless packet transmission

b)

Routing tables at the packet switches

c)

Destinations identified by unique addresses

d)

All of the above

13.

Bluetooth is an example of

a)

Local Area Network

b)

Wide Area Network

c)

Metropolitan Area Network

d)

Personal Area Network

14.

In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are

a)

Removed

b)

Modified

c)

Added

d)

Rearranged

15.

The ________ is the physical path over which a message travels

a)

Protocol

b)

Route

c)

Medium

d)

Path

16.

Three or more devices share a link in ________ connection

a)

Unipoint

b)

Multipoint

c)

Point to Point

d)

None of the above

17.

Which of the following is true for Transport Control Protocol

a)

Connection oriented

b)

Process to Process

c)

Transport layer protocol

d)

Connectionless

18.

Which OSI layer is responsible for providing end-to-end communication with reliable service?

a)

Transport layer

b)

Network layer

c)

Session layer

d)

Data link layer

19.

Which OSI layer is responsible for dividing the transmitted bit stream into frames?

a)

Network layer

b)

Transport layer

c)

Application layer

d)

Data link layer

20.

Which OSI layer is responsible for determining which route through the network to use?

a)

Network layer

b)

Data link layer

c)

Transport layer

d)

None of the above