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

In which of the following characteristics of the network, if the dimension of distance is hidden then users can not tell whether a remote host is in the room next door or in a different country?

  1. Automation

  2. Opaqueness

  3. Distance

  4. Efficient

  5. Reliable
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In this characteristic of the network, if the dimension of distance is hidden then users can not tell whether a remote host is in the room next door or in a different country.

Multiple choice

Which of the following statements is/are true about internet?

A. Internet is a group of connected communicating devices. B. Internet is composed of hundreds of thousands of interconnected networks. C. Internet is made of two or more networks that can communicate with each other. D. Internet is made up of many wide and local area networks joined by connecting devices and switching stations.

  1. A and B

  2. B and C

  3. Only B

  4. Only C

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

 Option C is correct.

Multiple choice

Which of the following statements is/are incorrect about internet?

A. Internet is made of two or more networks that can communicate with each other. B. Internet is made up of many wide and local area networks joined by connecting devices and switching stations. C. Internet is a group of connected communicating devices. D. Internet is composed of hundreds of thousands of interconnected networks.

  1. A and B

  2. B and C

  3. Only A

  4. Only B

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

Option A is wrong.

Multiple choice

Which of the following statements is/are correct?

A. National ISPs at the top of the hierarchy are the ISPs that connect end users to one or more regional ISPs. B. Local ISPs that are connected to one or more regional ISPs are at the second level. C. Local ISPs that provide direct services to the end users can be connected to regional ISPs or directly to national ISPs. D. The top level ISPs that connect nations together are called international ISPs.

  1. A and B

  2. B and C

  3. C and D

  4. Only A

  5. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both are correct.

Multiple choice

Which of the following statements is/are true?

A. ARPANET and MILNET are both large area networks of connected computers. B. ARPANET and MILNET are both small networks of connected computers. C. ARPANET is a small network of connected computers, while MILNET is bigger than ARPANET. D. ARPANET is used for nonmilitary users, while MILNET is used for military users.

  1. Only A

  2. Only B

  3. Only C

  4. Only D

  5. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Option D is correct.

Multiple choice

What is the role of topology in networking?

  1. The topology defines how devices are connected to make a network. The devices can be connected using a mesh topology.

  2. The devices can be connected using a net topology.

  3. The devices can be connected using a star topology.

  4. The devices can be connected using a ring topology.

  5. The devices can be connected using a bus topology.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Option 2 is wrong.

Multiple choice

Which of the following statements is incorrect?

  1. The transmission mode is defined by the transport layer between two devices.

  2. A transmission mode can be simplex, half - duplex or full-duplex.

  3. In a simplex mode, only one device can send and the other can receive.

  4. In a half - duplex mode, two devices can send and receive, but not at the same time.

  5. In a full - duplex mode, two devices can send and receive at the same time.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Option 1 is wrong.

Multiple choice

What is the role of OSI model?

  1. It covers all aspects of network communications.

  2. It understands and designs network architecture.

  3. It is a layered framework for the design of network systems that allows communication between only two different systems.

  4. It shows how to facilitate communication between two systems with changing the logic of the underlying hardware and software.

  5. It consists of seven related layers with no separation.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Option 1 is correct.

Multiple choice

What is a ' Frame Ready' ?

  1. Network that uses two OSI protocol layers as against there used I x 25

  2. Network used to send anaglog in formation such as voice and data

  3. A virtual circuit

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

The question appears to ask about Frame Relay, a WAN technology that operates at the lower two layers of the OSI model (Data Link and Physical layers). However, the question text contains typos ('Frame Ready' instead of 'Frame Relay', 'I x 25' instead of 'X.25'). Frame Relay was designed as a more efficient alternative to X.25 for packet-switched data networks.

Multiple choice

Which of the following is a network where a huge computer does all computing and front end PCs are dumb terminals?

  1. Client Server

  2. Mainframes

  3. Master Slave

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

Mainframe architecture uses centralized computing where a powerful mainframe handles all processing, and front-end devices (terminals) are essentially dumb terminals that only handle input and display. Client-server distributes processing, master-slave is a different pattern, and Internet is fully distributed.