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

Which of the following characteristics in ATM network can be defined as the maximum number of cells that can be submitted by a source back-to-back at peak cell rate?

  1. Peak cell rate

  2. Sustained cell rate

  3. Maximum burst size

  4. Preventive congestion control

  5. Reactive congestion control
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This characteristic in ATM network can be defined as the maximum number of cells that can be submitted by a source back-to-back at peak cell rate.

Multiple choice

Which of the following optical fiber cables cover(s) a distance of about 1500 km in length and offer(s) a higher capacity that supports about 20,000 to 60,000 voice channels?

  1. Metropolitan trunking

  2. Rural exchange trunks

  3. Long-haul transmission

  4. Subscriber loop circuits

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

This optical fiber cable covers a distance of about 1500 km in length and offers a higher capacity that supports about 20,000 to 60,000 voice channels.

Multiple choice

Expand the term 'modem'.

  1. Modulator Demodulator

  2. Modern Machines

  3. Modern Electronic Methods

  4. Modern Emulations
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct answer is (1). 

Multiple choice

A network which connects internet and other network services and technologies is known as

  1. gateway

  2. multiplexer

  3. information superhighway

  4. information technology
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Information superhighway is a large-scale communications network providing a variety of often interactive services, as text databases, email, and audio and video materials, accessed through computers, television sets, etc. A gateway is a network point that acts as an entrance to another network. 

Multiple choice

Give an advantage of star topology.

  1. Failure of one node or link doesn't affect the rest of network.

  2. Cable length required for this topology is the least compared to other networks.

  3. Each segment is provided with dedicated point to point wiring to the central hub.

  4. Expansion and modification in topology can be done without disrupting other nodes.

  5. Each computer has equal access to resources.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is an advantage of star topology.

Multiple choice

Which of the following is a disadvantage of ring topology?

  1. Network is highly dependent on the wire which connects different components.

  2. It is difficult to detect and troubleshoot fault at individual station.

  3. Performance as well as the number of nodes which can be added in such topology is dependent on the capacity of central device.

  4. There are high chances of redundancy in many of the network connections.

  5. Scalability of the network depends on the type of cable used.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is a disadvantage of ring topology.

Multiple choice

Choose the correct abbreviation.

SAN

  1. Storing Area Networking

  2. Storage Access Networking

  3. Storage Area Network

  4. Storage Application Networking
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

SAN stands for Storage Area Network, which is a dedicated high-speed network that provides access to block-level storage. 'Storing' (A) is grammatically incorrect in the acronym. 'Access' (B) and 'Application' (D) are not part of the standard SAN terminology.

Multiple choice

Identify the true statement.

  1. A computer or a laptop is mandatory to access internet.

  2. Internet can be used even without a computer.

  3. Internet can be used even without a service provider.

  4. You do not necessarily require a modem or a LAN card to access internet over a computer.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Internet can indeed be accessed without a traditional computer - mobile phones, tablets, smart TVs, and other IoT devices can all connect to the internet. Option A is false because many non-computer devices can access internet. Option C is false - you need an ISP/service provider. Option D is false - you need a network interface (modem, LAN card, or wireless adapter) to connect.

Multiple choice

Identify the false statement.

  1. Network is a connectivity of two or more computers.

  2. Network is a connectivity of two computers.

  3. Network is a connectivity of keyboard, mouse, speakers, printer & scanner to the computer.

  4. Network can be a connectivity of two or more computers in two different countries.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A computer network connects computers and devices to share resources. Option C is FALSE - connecting peripherals (keyboard, mouse, speakers, printer, scanner) to a single computer is NOT networking; those are peripheral connections. Options A, B, D correctly describe networks (two or more computers, can span countries). The question asks for the false statement.