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

The most reliable network is

  1. WAN

  2. MAN

  3. LAN

  4. WLAN

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

LAN is sized up to few kilometers. The transmission time in worst case is known in advance using the length. Hence, it is more reliable as compared to others.

Multiple choice

Which of the following network cables given below supports higher bandwidth for high transmission speeds in a computer network?

  1. Twisted pair cable

  2. Coaxial cable

  3. Optical fiber cable

  4. Copper cable

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

The maximum bandwidth's supported by different cables is given below: wisted pair cable- upto 300 Hz. Coaxial cable- upto 600 MHz.  Optical fiber cable- upto 2Gbps. Hence,  we choose optical fiber cable for high transmission of data in a network.

Multiple choice

Which of the following is true regarding to circuit switching networks?

  1. Expensive than packet switching networks

  2. Faster in data transmission than packet switching networks

  3. Reliable data transmission than packet switching networks

  4. All of the above

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

Circuit switching networks are expensive, reliable (no loss), faster in data transmission. Expensive because of end to end connection channel route is dedicated to the communication. Faster as no third party user uses the dedicated channel. Hence, faster. No information is lost hence ensures reliable. Example: Telephone communication.

Multiple choice

What kind of network is BankNet?

  1. Packet switched SONET network

  2. Packet switched X.25 network

  3. Circuit switched SONET network

  4. Circuit switched IP network

  5. Packet switched IP network
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

BankNet is a packet X.25 based network. It has nodes at Mumbai, Delhi, Chennai and Kolkatta.

Multiple choice

What is “Virtual Private Network”?

  1. It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization.

  2. It is a computer network across a public internet that provides users access to their organization's network while maintaining the security of the information transmitted.

  3. It is a computer network in which users can access a shared pool of computing resources through a service provider.

  4. None of the statements (1), (2) and (3) given above is a correctly description of Virtual Private Network.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A virtual private network (VPN) is a secure way of connecting to a private Local Area Network at a remote location, using the Internet or any unsecure public network to transport the network data packets privately, using encryption.