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Computer Networks

Description: Multiple Choice Questions in Data Communication and Computer Networks to Clear the Fundamental of Students
Number of Questions: 25
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Tags: Computer Networks OSI Layers Topologies Type of Networks Networking Wires Types of Cables Ethernet Network Standards LAN WAN MAN SAN General Awareness and Computer Applications Computer Applications (New) Information Technology
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Which of the following is not used in Local Area Networks?

  1. Computer

  2. Modem

  3. Cable

  4. Printer


Correct Option: B

Which topology provides highest reliability?

  1. Bus

  2. Star

  3. Ring

  4. Mesh


Correct Option: D
Explanation:

Mesh topology provides highest reliability.

Un-modulated signal coming from a transmitter is called

  1. carrier signal

  2. primary signal

  3. base band signal

  4. none of these


Correct Option: C

What is the typical local loop between the central office and our home made up of?

  1. Twisted pair

  2. Fibre optic

  3. Coaxial cable

  4. Satellite


Correct Option: A

The network topology that supports bi-directional links between each possible node is called

  1. BUS

  2. STAR

  3. RING

  4. MESH


Correct Option: D

What is the size of next generation IP address (IPv6)?

  1. 4 bytes (32 bits)

  2. 12 bytes (96 bits)

  3. 15 bytes (120 bits)

  4. 16 bytes (128 bits)


Correct Option: D
Explanation:

The size of next generation IP address (IPv6) is 16 bytes (128 bits).

Which mechanism does ARP (Address Resolution Protocol) use to resolve IP addresses?

  1. Mathematical formula

  2. Lookup table

  3. Central website

  4. Random number generator


Correct Option: B

The hamming distance between 001111 and 211 is

  1. 1

  2. 2

  3. 3

  4. 4


Correct Option: A

Start and stop bits are used in serial communication for

  1. error detection

  2. error correction

  3. synchronization

  4. speed up transmission


Correct Option: C

HDLC is

  1. bit oriented

  2. bit transparent

  3. code dependent

  4. none of these


Correct Option: A

What are the smallest and the highest possible values for an IP octet?

  1. 0 and 255

  2. 0 and 256

  3. 0 and 512

  4. 0 and 999


Correct Option: A

An example of full duplex transmission is ______.

  1. telnet

  2. wireless radio set

  3. modem

  4. server


Correct Option: A
Explanation:

An example of full duplex transmission is telnet.

FTP stands for _______.

  1. Fit To Parity

  2. File Transfer Protocol

  3. Fund Tracking Protocol

  4. File To Process


Correct Option: B

Which network uses dynamic or adaptive routing?

  1. TYMNET

  2. ARPANET

  3. SNA

  4. None of these


Correct Option: B

Error detection in data link layer is achieved by _________ .

  1. bit stuffing

  2. cyclic redundancy codes

  3. hamming codes

  4. equalization


Correct Option: B

Which of the following is not a field of Ethernet message packet?

  1. Type

  2. Data

  3. Pin code

  4. Address


Correct Option: C

Which of the following high level protocols run(s) over IP?

  1. FTP

  2. SMTP

  3. HTTP

  4. All of these


Correct Option: D

Internet is evolved from ______.

  1. DECNET

  2. ARPANET

  3. IBM SNA network

  4. None of these


Correct Option: B
Explanation:

 Internet is evolved from ARPANET.

Baud means _______.

  1. number of bits transmitted per unit time

  2. number of bytes transmitted per unit time

  3. the rate at which signal changes

  4. none of these


Correct Option: C

Find out the odd term from the following.

  1. Twisted pair

  2. Fibre optic

  3. Coaxial cable

  4. Microwave


Correct Option: D

Bit stuffing refers to

  1. inserting a '0' in user data stream to differentiate it with a flag

  2. inserting a '0' in flag stream to avoid ambiguity

  3. appending a nibble to data stream

  4. appending a nibble to flag stream


Correct Option: A

How many layers does OSI reference model have?

  1. 5

  2. 6

  3. 7

  4. 8


Correct Option: C

Which transmission mode is used by telephone lines?

  1. Parallel

  2. Serial

  3. Synchronous

  4. Asynchronous


Correct Option: B

Which data communication method is used for sending data in both directions at the same time?

  1. Super duplex

  2. Simplex

  3. Half duplex

  4. Full duplex


Correct Option: D

What Open Systems Interconnections (OSI) layer does IP belong to?

  1. Session layer

  2. Transport layer

  3. Network layer

  4. Data link layer


Correct Option: C
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