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

Dedicated line is same as ______.

  1. Narrowband Line

  2. Broadband Line

  3. Leased line

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

A dedicated line is a telecommunications connection reserved for specific use, also known as a leased line. It's not shared with other users and provides consistent bandwidth and reliability. This is different from standard broadband which is shared among multiple users.

Multiple choice

SONET is a standard for which of the following networks?

  1. Twisted-pair cable

  2. Fibre-optic cable

  3. Coaxial cable

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

SONET (Synchronous Optical Networking) is a standard for transmitting data over fiber-optic cables. It provides a standardized framework for synchronous data transmission at high speeds using optical fiber. SONET is not used for twisted-pair, coaxial cables, or Ethernet.

Multiple choice

Which of the following transmission techniques permits data flow in only one direction?

  1. Simplex

  2. Half Duplex

  3. Full duplex

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

Simplex transmission allows data to flow in only one direction, like a radio broadcast or television signal. Half-duplex permits two-way communication but not simultaneously (walkie-talkies), while full-duplex enables simultaneous two-way communication (telephone). Multiplexing is about combining signals, not directionality.

Multiple choice

Which of the following options is most reliable, robust and has a very high processing power and is used in networks too?

  1. Super computer

  2. Macro computer

  3. Main Frame

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mainframe computers are specifically designed for reliability, robustness, and high-volume transaction processing in networked environments like banking and airline reservation systems. While supercomputers have higher raw processing power, they're specialized for scientific calculations. 'Macro computer' is not a standard computer classification.

Multiple choice

Which of the following parameters in an ATM network gives the maximum amount of traffic that can be submitted by a source to an ATM network and is expressed as ATM cells per second?

  1. Sustained cell rate

  2. Maximum burst size

  3. Peak cell rate

  4. Burstiness

  5. Correlation of inter arrival times
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This parameter in an ATM network gives the maximum amount of traffic that can be submitted by a source to an ATM network and is expressed as ATM cells per second.

Multiple choice

Fill blank (i).

Directions: Read the following passage having some numbered blanks.

The Internet was started as a/an (i) ______ to test networks to try and develop a network that could survive a nuclear attack. While the net has never (ii) ______ to survive a nuclear blast its design has proven again and again how robust it is. It has withstood (iii) ______ an attack from construction, people digging up cables, to lightning blowing up a router. The network has always recovered (iv) ______ bypassed the problem. The Internet (v) ______ as the Advanced Research Projects Agency Network (ARPANET) during the cold war in 1969. It was (vi) ______ by the US Department of Defense's (DOD) research people in (vii) ______ with a number of military contractors and universities to explore the possibility of a communication network (viii) ______ could survive a nuclear attack. It continued simply because the DOD, DOD's contractors, and the universities found that it provided a very (ix) ______ way to communicate. (x) ______ originally designed to allow scientists to share data and access remote computers, e-mail quickly became its most popular application.

  1. probe

  2. examination

  3. speculation

  4. experiment

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

An ‘experiment’ is an act or operation for the purpose of discovering something unknown or of testing a principle, supposition, etc. In this context, this is correct as the passage directs us that the creation of the internet was done for testing an unknown principle.

Multiple choice

The internet evolved from ____.

  1. Baran's packet switch network

  2. DECNET

  3. IBM SNA network

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

ARPANET (Advanced Research Projects Agency Network), created by the US Department of Defense in 1969, was the direct precursor to the modern Internet. It pioneered packet-switching technology and TCP/IP protocols that evolved into today's Internet.

Multiple choice

Telex is the short form of two words, name the words?

  1. Telecom and exchange

  2. Terrestrial communication

  3. Torrent and computer

  4. Torrential and solar
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Telex is a telecommunication system that combines 'teleprinter' and 'exchange' to enable direct message transmission between teleprinters. The term derives from the technology's ability to automatically route and exchange telegraphic messages.