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

Which of the following is/are true statement(s)?

  1. Serial data transfer communication has slower speed as compared to parallel data transfer communication.

  2. Parallel data transfer communication has short distance.

  3. Serial data transfer communication has longer distance.

  4. All of the above

  5. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the above options are true statements.

Multiple choice

Which of the following is the first step in frame relay data transfer where in each connection, there exists a unique data link connection identifier?

  1. Exchange the information in the data frames.

  2. Establish a logical connection between the end points.

  3. After the delivery of information at the intended destination, logical connection must be released.

  4. Establish a new connection.

  5. Acknowledge the information to the destination computer.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the first step in frame relay data transfer where in each connection, there exists a unique data link connection identifier.

Multiple choice

A/An _________ allows network users to share a single copy of software, which resides on the network server.

  1. single-user license agreement

  2. network site license

  3. end-user license agreement

  4. business software license
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Network site licenses permit multiple users on a network to access a single copy of software installed on a server, providing cost-effective sharing. Single-user licenses restrict to one user, while EULA is a legal agreement, not a license type.

Multiple choice

A communication processor that connects dissimilar networks by providing the translation from one set of protocol to another is

  1. bridge

  2. gateway

  3. router

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

A gateway connects networks with different protocols and translates between them, enabling communication between dissimilar systems. Bridges connect similar networks, routers direct traffic, and modems convert digital signals to analog for transmission. Gateways operate at a higher level, handling protocol conversion.

Multiple choice

Voice mail

  1. is the exchange of text messages and computer files transmitted via a communication network such as a local area network or the internet

  2. permits users to converse in real time with each other via the computer while connected to the Internet

  3. functions much like an answering machine, allowing callers to leave a voice message for the called party

  4. involves using video and computer technology to conduct a meeting between participants at geographically separate locations
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Voice mail functions like an answering machine - callers can leave voice messages when the recipient is unavailable or chooses not to answer. Unlike email (text), chat (real-time text), or video conferencing (visual meetings), voice mail specifically stores audio messages for later retrieval. It's an asynchronous communication technology.

Multiple choice

All of the following are basic principles of networks, except

  1. each computer must have a network card

  2. there must be communication media connecting the network hardware devices

  3. there must be at least one connecting device

  4. each computer must have software that supports the movement of information
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice

Which of the following cables can transmit data at high speeds?

  1. Coaxial cable

  2. Optic fibre cable

  3. Twistedpair cable

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

Optic fiber cables transmit data using light pulses, enabling extremely high speeds (gigabits to terabits per second). Coaxial cable (A) and twisted pair/UTP (C, D) use electrical signals and have much lower bandwidth limits due to electromagnetic interference and signal degradation. Fiber optics are the fastest transmission medium for long-distance data communication.

Multiple choice

Which of the following is not a type of broadband internet connection?

  1. Cable

  2. DSL

  3. Dial-up

  4. Satellite

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

Dial-up is NOT a broadband connection. Broadband refers to high-speed, always-on internet connections. Dial-up uses traditional phone lines, requires establishing a connection each time, and offers very slow speeds (maximum 56 Kbps), which does not meet broadband speed criteria.