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 deploying DCE for subsystem internal communications, with the expectation that DCE will eventually form the infrastructure of the entire information system?

  1. The Alaska Synthetic Aperture Radar Facility

  2. The Deep Space Network's Communication Complexes Monitor and Control Subsystem

  3. Earth Observing Systems Data Information System

  4. Internet Research Task Force

  5. Internet Engineering Task Force
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is deploying DCE for subsystem internal communications, with the expectation that DCE will eventually from the infrastructure of the entire information system.

Multiple choice

Which of the options best fits gap 15?

Directions: Fill in the gaps to make meaningful sentences.

Telephone and data networks, both private and public, provide speech or data communication -----15----two points. These two points -------16-------------at fixed locations, or if the network includes one or more switching points, any user may be able to access any other user. The network then, offered together with the associated service, is known as the value added network. Most VAN operators -----17----a combination of private lines, spare capacity on public or private networks to provide the basic network.

  1. between

  2. among

  3. in

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

Whenever there is comparison or relationship between two things, 'between' is used. Among is used for more than two things.

Multiple choice

Which of the options best fits gap 17?

Directions: Fill in the gaps to make meaningful sentences.

Telephone and data networks, both private and public, provide speech or data communication -----15----two points. These two points -------16-------------at fixed locations, or if the network includes one or more switching points, any user may be able to access any other user. The network then, offered together with the associated service, is known as the value added network. Most VAN operators -----17----a combination of private lines, spare capacity on public or private networks to provide the basic network.

  1. employs

  2. employed

  3. employ

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

The 'operators' is plural and the tense is present indefinite so 'employ' is the best option.

Multiple choice

Which of the options best fits gap 16?

Directions: Fill in the gaps to make meaningful sentences.

Telephone and data networks, both private and public, provide speech or data communication -----15----two points. These two points -------16-------------at fixed locations, or if the network includes one or more switching points, any user may be able to access any other user. The network then, offered together with the associated service, is known as the value added network. Most VAN operators -----17----a combination of private lines, spare capacity on public or private networks to provide the basic network.

  1. may be

  2. should be

  3. might be

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

We need a modal that stands for optional sense. (2) and (4) are mandatory options. Also, 'may be at' and 'may be able' need to be parallel.

Multiple choice

What is the use of Spanning Tree Protocol for any bridged Ethernet local area network?

  1. Fault Tolerance

  2. Shortest Path Routing

  3. Speedy Delivery

  4. Ensuring a loop-free topology

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

The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning tree also allows a network design to include spare (redundant) links to provide automatic backup paths if an active link fails, without the danger of bridge loops, or the need for manual enabling/disabling of these backup links.

Multiple choice

Which of the following is a property of ATM networks?

  1. It is connectionless.

  2. Cell delivery is guaranteed but their order is not.

  3. Cell delivery is not guaranteed but their order is guaranteed.

  4. Cell delivery is guaranteed and their order too.

  5. It is a circuit-switched technology.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ATM networks are connection-oriented. Making a call requires first sending a message to set up a connection. After that, subsequent cells follow the same path to the destination. Cell delivery is not guaranteed, but their order is guaranteed. If cells 1 and 2 are sent in that order, then they will arrive in that order, never first 2 and then 1.

Multiple choice

Wireless Internet is also called...

  1. HiFe

  2. HiFi

  3. WeFe

  4. WiFi
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

WiFi is the common term for wireless local area network technology that allows electronic devices to connect to the internet.

Multiple choice physics universe and space science launching of an artificial satellites around the earth launching of satellite india’s space programmes

Why would a switch be used in a network in preference to a HUB ?

  1. To reduce the network traffic

  2. To prevent the spread of all viruses

  3. To connect a computer directly to the internet

  4. To manage password security at the work station
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A switch can be used in a network in preference to HUB because a switch helps far better than a HUB to reduce the network traffic.

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

 How does communication between satellite be achieved

  1. Using satellite cross-links

  2. Intersatellite links (ISLs)

  3. Through ground stations

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A crosslink is when satellites communicate directly with eachother, instead of communicating with a ground station which, in turn, communicates with other satellites. Frequencies that are quickly attenutated in the atmosphere are commonly used, making the link undetectable and unjamable from the ground.


ISLs permits a satellite to communicate, when it is not visible from a receiving ground station, using a geostationary TLC satellite.

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

Which of the following is not advantage of satellite communication?

  1. can reach over large geographical area

  2. circuit costs independent of distance

  3. broadcast possibilities

  4. none of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.

It has a number of advantages-
1. Mobile communication can be easily established by satellite communication.
2. Satellite communication is economical compared with terrestrial communication particularly where long distances are involved.
3. User has control over their own network.
4. It spreads over a large geographical area.
5. Broadcast over very large distances is possible only due to these satellites.