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

________ topology shows how data flows within a network.

  1. Star

  2. Ring

  3. Bus

  4. Physical

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

Logical topology shows how data flows within a network. Topologies are either physical or logical. Physical topology refers to the placement of the network's various components, including device location and cable installation. Logical topology is the way that the signals act on the network media, or the way that the data passes through the network from one device to the next without regard to the physical interconnection of the devices. Bus, Ring and Star topologies are logical topologies.

Multiple choice

Which of the following is incorrect - a) PIN and password are same terms. b) ATMs are not connected to CBS system. c) Virtual keyboard is conneted via PS/2 port.

  1. Only (a)

  2. Only (b)

  3. Only (c)

  4. (a) and (b)

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

All of (a), (b) and (c) are false. a) PIN and password are not the same terms. Password is a combination of characters, numbers and special symbols whereas PIN (Personal Identification Number) is a combination of numbers assigned to ATM card or debit card. b) ATMs are connected to CBS (Core Banking Solution) system. Without a connection to CBS system ATMs cannot provide account services. c) Virtual keyboard is is not a hardware. Virtual keyboard is a keyboard displayed on screen to provide security. Virtual keyboard is an online application which substitutes the actual physical keyboard with a mouse. This virtual keyboard is a safeguard against risks in online banking.

Multiple choice

Which of the following is not a network?

  1. TCP/IP

  2. LAN

  3. MAN

  4. PSTN

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

TCP/IP is not a network. TCP/IP, short for Transmission Control Protocol/Internet Protocol, is the suite of communications protocols used to connect hosts on the internet.

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 if both arrive, they will arrive in that order, never first 2 and then 1.

Multiple choice

What kind of network is X.25?

  1. Connection-oriented packet switched

  2. Connectionless packet switched

  3. Connection-oriented byte delivery

  4. Connection-oriented bit delivery

  5. Connectionless byte delivery
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

X.25 is a connection-oriented packet switched network.

Multiple choice

Which of the following is/are true statement(s)?

  1. Serial data transfer communication has slower speed as compared to parallel data transfer communication.

  2. Parallel data transfer communication has short distance.

  3. Serial data transfer communication has longer distance.

  4. All of the above

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

All of the above options are true statements.

Multiple choice

Which of the following is the first step in frame relay data transfer where in each connection, there exists a unique data link connection identifier?

  1. Exchange the information in the data frames.

  2. Establish a logical connection between the end points.

  3. After the delivery of information at the intended destination, logical connection must be released.

  4. Establish a new connection.

  5. Acknowledge the information to the destination computer.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the first step in frame relay data transfer where in each connection, there exists a unique data link connection identifier.