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 is/are possible in case of pure ALOHA versus slotted ALOHA at low load?

  1. The transmission delay will be less in slotted ALOHA.

  2. The transmission delay will be negligible in case of pure ALOHA.

  3. Both slotted and pure ALOHA will have transmission with the same rate of delay.

  4. There will be no collision or delay possible in case of low load.

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

All of the above are the false statement.

Multiple choice

Which of the following statements is incorrect about VLAN (virtual LAN )?

  1. VLAN has mutually isolated, multiple distinct broadcast domains.

  2. There can be one or more routers to pass the data packets.

  3. It is not flexible for the networking requirements.

  4. VLAN provides broadcast filtering, security and address summarisation.

  5. It provides scalability and security to the applications.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

VLANs provide the flexibility to adapt to changes in network requirements and allows for simplified administration.

Multiple choice

Which of the following is not a network device?

  1. Core

  2. Switch

  3. Hub

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

Switches, Hubs, and Routers are all fundamental network devices that forward data. 'Core' is not a specific network device - it refers to a layer in network architecture (core layer) or core switches, but 'Core' alone is not a device category. The actual devices are routers, switches, hubs, bridges, and repeaters.

Multiple choice

Which of the following is a broadband Internet connection?

  1. 28.8k

  2. 56k

  3. Cable

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

Cable modems provide broadband internet access over coaxial cable lines, offering speeds from 25 Mbps to 1+ Gbps. 28.8k and 56k are dial-up modem speeds (narrowband). 'Modem' alone is a device type, not a connection technology - the question asks for the broadband technology, which is Cable.

Multiple choice

Voice mail

  1. is the exchange of text messages and computer files transmitted via a communications network such as a local area network on 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

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

Voice mail stores voice messages digitally, allowing callers to leave messages when the recipient is unavailable, similar to how an answering machine works. The other options describe email/instant messaging (A), chat (B), and video conferencing (D).

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

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A network site license allows multiple users to share a single copy of software installed on a server, rather than requiring individual licenses for each computer. Single-user (A) and end-user (C) licenses are for individual use.

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's hardware devices

  3. there must be at least one connecting device

  4. each computer must have software that supports the movement of information

  5. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer