Communication Netwpork.pdf

MCQ, S OF COMMUNICATION NETWORK

Q1

The is the physical path over which a message travels.

(a) Protocol (b) Medium (c) Signal (d) All of the above

Q2

Frequency of failure and network recovery time after a failure are measures of the

of a network.

(a) Performance (b) Reliability (c) Security (d) feasibility

Q3

The performance of a data communication network depends on .

(a) The no. of users (b) The transmittion media (c) The hardware and software (d) All of the above

Q4

Viruses are a network issue.

(a) Performance (b) Reliability (c) Security (d) All of the above

Q5

Protection of a data from natural disaster such as a tornado is a network issue.

(a) Performance (b) Reliability (c) Security (d) Management

Q6

The information to be communicated in the data communication system is the

(a) Protocol (b) Medium (c) Message (d) Transmission

Q7

Is the division of one task among multiple computers.

(a) Distributed processing (b) Distributed messaging (c) Distributed telephony (d) Electronic messaging

Q8

If a protocol specifies that data should be sent at 100M bps , this is a issue.

(a) Syntax (b) Semantics (c) Timing (d) None of the above

Q9

When a protocol specifies that the address of the sender must occupy the first four bytes

of a message, this is issue.

(a) Syntax (b) Semantics (c) Timing (d) None of the above

Q10

When we are communicating actually we are sharing .

(a) Information (b) Cables (c) Files (d) components

Q11

In the context of computer information systems data are represented .

(a) By binary information units (b) In figure (c) In digits (d) By timing manner

Q12

The effectiveness of data communication depends upon the following fundament

characteristics except

(a) Delivery (b) Accuracy (c) Time line (d) Distance

Q13

is a set of rules that govern data communication.

(a) Protocol (b) Data (c) Standard (d) Medium

Q14

Which topology requires a central controller or hub?

(a) Mesh (b) Star (c) Bus (d) Ring

Q15 Which topology requires a multipoint connection?


Q16 Communication between a computer and a key board involves transmission

(a) Simplex (b) Half- duplex (c) Full- duplex (d) Automatic

Q17

A tree topology is a variation of which topology?


Q18 A television broadcast is an example of transmission

(a) Simplex (b) Half- duplex (c) Full- duplex (d) Automatic

Q19

In which topology if there are n devices in a network ,each device has n-1ports for cables.

(a) Mesh (b) Star (c) Bus (d) ring

Q20

A connection provides a dedicated link between two devices.

(a) Point to- point (b) Multipoint (c) Primary (d) Secondary

Q21

In a connection , more than two devices can share a single link.

(a) Point to- point (b) Multipoint (c) Primary (d) Secondary

Q22

In which transmission the channel capacity is shared by both communicating devices at

all times.

(a) Simplex (b) Half- duplex (c) Full- duplex (d) Half simplex

Q23

For connection between two countries located in different continents is

(a) LAN (b) WAN (c) MAN (d) None

Q24 Which topology features a point to point line configuration?

(a) Mesh (b) Star (c) Ring (d) All of the above

Q25 In which link, the only traffic is between the two connected devices.

(a) Secondary (b) Primary (c) Dedicated (d) None of the above

Q26

The OSI model consists of layers.

(a) Two (b) four (c) Seven (d) Five

Q27

The layer decides the location of synchronization points.

(a) Transport (b) Session (c) Presentation (d) Application

Q28 End to end delivery of entire message is the responsibility of which layer?

(a) Session (b) Transport (c) Data link layer (d) presentation layer

Q29

Node to Node Delivery of the data unit is the responsibility of the layer.

(a) Physical (b) Data link (c) Transport (d) Network

Q30

Mail services and directory services are available to network users through the

layer.

(a) Data link (b) session (c) Transport (d) application

Q31

As the data packets moves from lower to upper layers, headers are .

(a) Added (b) Subtracted (c) Rearranged (d) Modified

Q32

The layer lies between the network layer and session layer .

(a) Physical (b) Data link (c) Application (d) transport

Q33

Translation from One Character Code to Another Occurs In

(a) Transport (b) Session (c) Presentation (d) Application

Q34 Which layer changes bits into electromagnetic signals.

(a) Physical (b) Session (c) Network (d) Data link

Q35

What is main function of the transport layer?

(a) End to end message delivery (b) Point to point delivery (c) Synchronization (d) Updating

Q36

Which of the following are the application layer services?

(a) Network virtual terminal (b) File transfer, asses, and management (c) Mail services (d) All of the above

Q37

Information fist transformed in to before transmission.

(a) Periodic signals (b) A periodic signals (c) Electromagnetic signals (d) Low freq signal

Q/N

O

ANSWERS Q/N

O

ANSWERS

1 Medium

20 Point to- point

2 Reliability

21 Multipoint

3 The no. of users

22 Half- duplex

4 Security

23 _

5 Reliability

24 _

6 Message 25 Dedicated

7 Distributed processing

26 Seven

8 Timing

27 Session

9 Syntax

28 Transport

10 Information

29 Network

11 By binary information

units

30 application

12 Distance

31 Added

13 Protocol

32 transport

14 Star

33 Presentation

15 Bus 34 Physical

16 Simplex 35 End to end message

delivery 17 Star

36 All of the above

18 Full- duplex

37 Electromagnetic signals

19 Mesh

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Communication Netwpork.pdf