Computer Knowledge

Computer Networks

2,095 Questions

Computer networks form the backbone of digital communication, connecting multiple devices to share data and resources. This area covers network architectures, transmission media, modems, and topologies like LAN. These concepts are crucial for computer knowledge sections in banking and government exams.

Network topologiesModulation and demodulationNetwork addressingFiber optic cablesWireless infrastructure

Computer Networks Questions

Multiple choice

Multiple hubs are found in _______.

  1. ring topology

  2. bus topology

  3. tree topology

  4. star topology

  5. mesh topology
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct as in tree topology, there are two hubs; one is primary and the other is secondary.

Multiple choice

A Demultiplexer is also known as

  1. data selector

  2. data distributor

  3. multiplexer

  4. encoder
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A demultiplexer (DEMUX) takes a single input and routes it to one of many possible outputs based on select lines. This function of distributing one data signal to multiple destinations makes it a 'data distributor.' A multiplexer does the opposite (many-to-one), while an encoder converts data to a different code format.

Multiple choice

Which of the following is/are false in case of message switching technique?

  1. This technique is called store and forward network technique.

  2. In this technique, no physical path establishes between the sender and the receiver.

  3. Message switching is useless for high data traffic.

  4. There is a limit to send a block size.

  5. Both (3) and (4)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Message switching technique has no limit for block of data.

Multiple choice

Which of the following is/are true statements about multiplexing in networking?

  1. Frequency-division multiplexing (FDM) uses similar range frequencies over a single medium.

  2. FDM uses optical communication.

  3. Carrier Sense Multiple Access (CSMA) is an example of Time division Multiplexing.

  4. All of the above

  5. Only (2) and (3) are correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Carrier Sense Multiple Access, data streams are separated by time on the same medium. Hence it is an example of Time division Multiplexing.

Multiple choice

Which of the following is/are false about congestion in networking?

  1. Congestion occurs when the bandwidth is insufficient.

  2. Congestion causes slow response time.

  3. It reduces network throughput.

  4. Due to congestion, frame or data packet loss and the blocking of new connections.

  5. None of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All of the above are the true statements.