Computer Knowledge

Computer Networks

2,256 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

When we want to place a telephone call, the switching equipment of the telephone searches a physical path all the way from our telephone to the receiver’s telephone. This technique is known as __________.

  1. packet switching

  2. circuit switching

  3. call switching

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

When we want to place a telephone call, the switching equipment of the telephone searches a physical path all the way from our telephone to the receiver’s telephone. This technique is known as circuit switching.

Multiple choice

What type of network is ATM?

  1. Connection oriented packet switched

  2. Connectionless packet switched

  3. Connection oriented with virtual circuit

  4. Connectionless circuit switched

  5. Either connectionless or connection oriented virtual circuit
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ATM uses a connection-oriented model in which a virtual circuit must be established between two endpoints before the actual data exchange begins.These virtual circuits may be “permanent”, i.e. dedicated connections that are usually preconfigured by the service provider, or “switched”, i.e. set up on a per-call basis using signalling and disconnected when the call is terminated.

Multiple choice

Why is spanning tree protocol used for bridged ethernet local area network?

  1. For minimizing contention

  2. For a loop free topology

  3. For fault tolerance

  4. For minimizing collisions

  5. For increasing the network bandwidth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged ethernet local area network. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them.

Multiple choice

What is the way of operation of LAN interfaces called, in which all frames are given to the computer,not just those addressed to it?

  1. Hardware virtualisation

  2. Packet analyzer

  3. Monitor mode

  4. Promiscuous mode

  5. MAC spoofing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In computer networking, promiscuous mode or promisc mode is a mode for a wired network interface controller (NIC) or wireless network interface controller (WNIC) that causes the controller to pass all traffic it receives to the central processing unit (CPU) rather than passing only the frames that the controller is intended to receive.

Multiple choice

Which of the following statements is false about transmission media in networking?

  1. Infrared is an example of unguided media.

  2. Twisted pair is used in buildings and in telephone connection network.

  3. Twisted pair is expensive as compared to optical fibre.

  4. Optical fibre has higher data rate than twisted pair.

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

This is a false statement as optical fibre is more expensive than twisted pair cable.

Multiple choice

Which of the following statements is/are true in context of OSI model of networking?

  1. The physical layer is responsible for providing services requested by the data link layer.

  2. The physical layer determines the physical and electronic specifications of devices such as repeaters, cables and network interface cards.

  3. The protocols of the physical layer include CSMA/CD (Carrier Sense Multiple Access/collision detection), DSL (digital subscriber line), etc.

  4. Ethernet is used for local area networks.

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, all the options determine the correct information related to the OSI model in networking.

Multiple choice

Which of the following statements is not true about the topologies in networking?

  1. There is a limitation of devices to connect through the bus topology.

  2. Star topology is expensive as compared to bus topology.

  3. Star topology is better than ring topology.

  4. In star topology, we can add or remove the devices easily without effecting the entire network.

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

This is the correct choice.