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 a type of functional group in network management problem which consists of configuring network elements as well as the network as a whole?

  1. Fault management

  2. Performance management

  3. Security management

  4. Configuration management

  5. Accounting management
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a type of functional group in network management problem which consists of configuring network elements as well as the network as a whole.

Multiple choice

Which of the following is a group of Quality of Services in network characteristics which is the ratio between the time period in which the system or service retains usability and the overall time of system life?

  1. Security

  2. Performance

  3. Availability

  4. Reliability

  5. Provider-only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a group of Quality of Services in network characteristics which is the ratio between the time period in which the system or service retains usability and the overall time of system life.

Multiple choice

Which of the following form of interconnection network in parallel systems is the one in which components are arranged as nodes in a grid and each component is connected to all adjacent components in the grid?

  1. Bus

  2. Hypercube

  3. Mesh

  4. Ring

  5. Token-passing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This form of interconnection network in parallel systems is the one in which components are arranged as nodes in a grid and each component is connected to all adjacent components in the grid.

Multiple choice

If the computers connected to a network have equal status, it is called

  1. application-server network

  2. client-server network

  3. peer-to-peer network

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

Nearly all operating systems come with the ability to act as some kind of a server to share resources. You can set up different computers to allow others to use its peripherals, such as printers or CDROM drives and other computers to allow others to read or write to its hard disk, allowing sharing of files, while other computers may allow access to its internet connection. When you allow workstation computers to become servers and share things in this manner, it is called a peer-to-peer network. Peer-to-peer network has networks that have equal status. A typical home network might be done this way.

Multiple choice

Which of the following is not an important feature of local area network?

  1. An independent system is called node and is interconnected to LAN.

  2. There is generally one central node called ‘server’.

  3. The way the different types of services are handled by server depends upon topology and protocols.

  4. It can be used within limited wide area, say 10 Kms.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LAN (Local Area Network) refers to a particular region that is interconnected by multiple computers into computer groups. “A region” refers to the same office, the same building, the same company and the same school, generally within a radius of several kilometres. You can provide different services like document management, application software sharing, printer sharing, scanner sharing, workgroup scheduling, e-mail and fax communications services and other VOIP and unified communication. Thus, option 4 is not true. 

Multiple choice

Which among the following are parts of local area network (LAN)?

(a) Workstation (b) Disk duplexing (c) File server (d) Modem

  1. (a), (b), (c) and (d)

  2. (b), (c) and (d)

  3. (a), (c) and (d)

  4. (a), (b) and (c)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Disk duplexing is a variation of disk mirroring in which each of multiple storage disks has its own SCSI controller. Disk mirroring (also known as RAID 1) is the practice of duplicating data in separate volumes on two hard disks to make storage more fault-tolerant. LAN can safeguard data by disk mirroring or disk duplexing.

Multiple choice

Consider the following statements:

  1. A passive optical network is a point-to-point optical network.
  2. A gigabit passive optical network has higher bandwidth and higher efficiency.

Which of the above statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither of them
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement 1 is incorrect because passive optical network is a point-to-multipoint network useful for broadcasting. Statement 2 is correct as gigabit passive optical network is the advanced form of passive optical network with more bandwidth than its predecessor and thus, is more efficient.

Multiple choice

Which of the following is /are true about GAN (Global Area Network)?

  1. It is an interconnected network of multiple WANs (Wide Area Network).

  2. It has routers and sublets for sending data packets in the medium.

  3. It has limited scope.

  4. All of the above.

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

Both are the true statements in case of Global Area Network (GAN).

Multiple choice

Which of the following is the correct transmission path in hops for a packet switching network that contain n nodes in a bidirectional ring form?

  1. Packet switching does not observe any transmission path in hops.

  2. Best case = 2, average case = 2, worst case = 2

  3. Best case = 1, average case = n/4, worst case = n/2

  4. Best case = 1, average case = 1, worst case = 1

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

This is the case of ring topology,  which has such type of transmission paths in hops.

Multiple choice

Which of the following is/are false about message switching or packet switching?

  1. The data sent in message switching is of limited size.

  2. The data sent in packet switching is of limited size.

  3. The packet switching technique divides data in to multiple packets before sent in the network.

  4. The message switching technique can sent arbitrary long data units.

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

The data packets do not have any limit in message switching technique.