Computer Network MCQs

1) A network is a set of __________ connected by communication links.

A)applications B) model C) medium D)devices 

Correct Ans: devices 

2) ______________ refers to the variation in the packet arrival time.

A)Jitter B)Timeliness C)Accuracy D)Delivery

Correct Ans: Jitter

3) A ________topology is the one where every node is connected to every other node in the network. 

A)ring B)bus C)mesh  D)star

Correct Ans: mesh

4) ___________ is group of interconnected computers within a small area.

A)MAN B) WAN C) PAN D)LAN

Correct Ans: LAN

5) A __________ cable is made of glass or plastic and transmits signals in the form of light.

A)fiber-optic B)coaxial C)twisted-pair D)None of these

Correct Ans: fiber-optic

6) The process for converting digital data into digital signal is said to be ____________. 

A)unipolar encoding B)Line Coding C)Polar encoding D)Manchester

Correct Ans: Line Coding

7) ___________ divides the spectrum or carrier bandwidth in logical channels and allocates one user to each channel.

A)FDM B) TDM C)WDM D)CDM

Correct Ans: FDM

8) Shortcomings of message switching gave birth to an idea of ___________.

A)Frame Switching B)Message Switching C)Data Switching D)Packet Switching

Correct Ans: Packet Switching

9) ______________ field stores the checksum value generated by the sender before sending. 

A)Length B)Length C)checksum D)Source Port

Correct Ans: checksum

10) To encompass need of fast emerging software and hardware technologies, Ethernet

extends itself as ____________.

A)CSMA B)Virtual LAN C)Giga-Ethernet D)Fast-Ethernet

Correct Ans: Fast-Ethernet

11) ___________ is responsible for converting data stream to signals bit by bit and to send that over the underlying hardware. 

A)Application Layer B)Data link layer C) Physical Layer D) Network Layer

Correct Ans: Data link layer

12) _________ has introduced anycast addressing but has removed the concept of broadcasting.

A)IPv6 B)IPv4 C) Both A & B D)None of these

Correct Ans: IPv6

13) ____________ provides unreliable communication between two hosts.

A)TCP B) UDP C) FTP D) SMTP

Correct Ans: UDP

14) __________ works on Client/Server Model where a client requests file from Server and server sends requested resource back to the client.

A)TCP B) UDP C) FTP D) SMTP

Correct Ans: FTP

15) ___________ uses hierarchical domain based naming scheme.

A)SMTP B)FTP C)HTTP D)DNS

Correct Ans: DNS

16) __________ may include wireless computer keyboard and mouse, Bluetooth enabled headphones, wireless printers, and TV remotes.

A)MAN B)LAN C)WAN D)PAN

Correct Ans: PAN 

17) Whenever a message is transmitted, it may get scrambled by noise or data may get corrupted is known as _________.

A)Error Detection B)Error Correction C)Error control D)Error

Correct Ans: Error

18) Broadband PLC provides higher data rates up to ________ of Mbps and works at higher frequencies.

A)200s B)400s C)100s D)500s

Correct Ans:100s