Computer Networking Quiz (or) Computer Networking MCQ (Multiple Choice Questions)

1 .

The sharing of a medium and its link by two or more devices is called _____

A)

Duplexing

B)

Multiplexing

C)

Micropleixng

D)

Fully duplexing

Correct Answer : Option (B) : Multiplexing

Explanation : Multiplexing is a method using which one can send multiples signals through a shared medium at the same time. This helps in using less resources and thus saving the cost of sending messages.

2 .

Coaxial cable consists of _______ concentric copper conductors.

A)

4

B)

3

C)

2

D)

1

Correct Answer : Option (C) : 2

Explanation : Coaxial cable has an inner conductor surrounded by a insulating layer, which is surrounded by a conducting shield. Coaxial cable is used to carry high frequency signals with low losses.

3 .

Fiber optics posses following properties _____

A)

Very hard to tap

B)

Very less signal attenuation

C)

Immune electromagnetic interference

D)

All of the Above

Correct Answer : Option (D) : All of the Above

Explanation : In fibre optics the transmission of information is in the form of light or photons. Due to all above properties mentioned in options fibre optics can be submerged in water and are used at more risk environments.

4 .

Radio channels are attractive medium because _____

A)

Can penetrate walls

B)

Can carry signals for long distance

C)

Connectivity can be given to mobile user

D)

All of the above

Correct Answer : Option (D) : All of the above

Explanation : Radio channels can penetrate walls, can be used to provide connectivity to mobile users and can also carry signals for long distances.

5 .

Geostationary satellites _____

A)

Are placed at a fixed point above the earth

B)

Rotate the earth about a fixed axis

C)

Rotate the earth about a varying axis

D)

All of the above

Correct Answer : Option (A) : Are placed at a fixed point above the earth

Explanation : They are placed in orbit at 36,000km above Earth’s surface.

6 .

_______ allows LAN users to share computer programs and data.

A)

Network

B)

File server

C)

Print server

D)

Communication server

Correct Answer : Option (B) : File server

Explanation : A file server allows LAN users to share computer programs and data. It uses the File Transfer Protocol to provide this feature on ports 20 and 21. The file server works as a medium for the transfer.

7 .

With respect to physical media, STP cables stands for _________

A)

Spanning Tree Protocol Cable

B)

Shielded Two Power Cable

C)

Shielded Twisted Pair Cable

D)

Static Transport Protocol Cable

Correct Answer : Option (C) : Shielded Twisted Pair Cable

Explanation : For physical media, STP cable stands for Shielded twisted pair cable. 100 Mbps is the max data capacity of STP cable and its default connector is RJ45. It is popularly used in LANs due to its ease of maintenance and installation.

8 .

The __________ portion of LAN management software restricts access, records user activities and audit data, etc.

A)

Security management

B)

Recovery management

C)

Performance management

D)

Configuration management

Correct Answer : Option (A) : Security management

Explanation : The Security management portion of LAN management software restricts access, records user activities, and audit data. It is responsible for controlling access to the network based on predefined policy. The security management ensures authentication, confidentiality, and integrity in the LAN.

9 .

What is the max length of the Shielded twisted pair cable?

A)

100 ft

B)

200 ft

C)

100 m

D)

200 m

Correct Answer : Option (C) : 100 m

Explanation : The max the Shielded twisted pair cable is 100 meters. If the length exceeds 100 meters, the loss of signals flowing through the cable would be really high. Thus, STP cable is more suitable for smaller networks like LANs.

10 .

What is the max data transfer rate of STP cables?

A)

10 Mbps

B)

100 Mbps

C)

1000 Mbps

D)

10000 Mbps

Correct Answer : Option (B) : 100 Mbps

Explanation : 100 Mbps is the max data transfer rate that can be handled by STP cables, and its default connector is RJ-45. 100 Mbps is a feasible data transfer rate for small networks like LANs.