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 common network topology used in small office or home networks?

  1. Star topology

  2. Bus topology

  3. Ring topology

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

In a star topology, all devices are connected to a central hub or switch, forming a star-like structure.

Multiple choice

What is the purpose of a router in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To store and manage network data
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A router is a networking device that connects multiple networks and routes data packets between them, ensuring that they reach their intended destinations.

Multiple choice

What is the purpose of a modem in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To convert digital signals to analog signals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A modem is a device that converts digital signals from a computer into analog signals that can be transmitted over a telephone line or other analog medium.

Multiple choice

What is the purpose of a proxy server in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To act as an intermediary between clients and servers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A proxy server acts as an intermediary between clients and servers, handling requests and responses on behalf of the clients, improving performance and security.

Multiple choice

Which of the following is NOT a type of communication network?

  1. Centralized

  2. Decentralized

  3. Chain

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

The wheel network is not a type of communication network. It is a type of social network.

Multiple choice

Which of the following is NOT a type of communication network?

  1. Chain

  2. Wheel

  3. Star

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

Chain, wheel, and star are all types of communication networks.

Multiple choice

Which of the following is NOT a type of migration network?

  1. Chain migration

  2. Step migration

  3. Return migration

  4. Circular migration
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Return migration is not a type of migration network.

Multiple choice

Which of the following factors contribute to network reliability?

  1. Network architecture and design.

  2. Quality of network components and equipment.

  3. Network maintenance and monitoring practices.

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

Network reliability is influenced by a combination of factors, including network architecture and design, the quality of network components and equipment, and effective network maintenance and monitoring practices.

Multiple choice

What is the concept of Mean Time Between Failures (MTBF) in network reliability?

  1. The average time between successive failures of a network component or system.

  2. The average time required to repair or replace a failed network component or system.

  3. The probability of a network component or system failing within a given time period.

  4. The maximum time a network component or system can operate without failing.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mean Time Between Failures (MTBF) is a measure of network reliability that represents the average time between consecutive failures of a network component or system.

Multiple choice

What is the concept of Mean Time To Repair (MTTR) in network reliability?

  1. The average time between successive failures of a network component or system.

  2. The average time required to repair or replace a failed network component or system.

  3. The probability of a network component or system failing within a given time period.

  4. The maximum time a network component or system can operate without failing.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mean Time To Repair (MTTR) is a measure of network reliability that represents the average time required to repair or replace a failed network component or system.

Multiple choice

Which of the following is a common approach to improving network reliability?

  1. Implementing redundant network components and systems.

  2. Regularly performing network maintenance and upgrades.

  3. Using high-quality network components and equipment.

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

Improving network reliability involves a combination of strategies, including implementing redundant network components and systems, regularly performing network maintenance and upgrades, and using high-quality network components and equipment.

Multiple choice

What is the concept of network availability in relation to network reliability?

  1. The percentage of time a network is operational and accessible to users.

  2. The probability of a network component or system failing within a given time period.

  3. The maximum time a network component or system can operate without failing.

  4. The average time required to repair or replace a failed network component or system.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Network availability is a measure of network reliability that represents the percentage of time a network is operational and accessible to users.

Multiple choice

Which of the following is a common cause of network failures?

  1. Hardware failures.

  2. Software bugs.

  3. Human errors.

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

Network failures can be caused by a variety of factors, including hardware failures, software bugs, human errors, and natural disasters.

Multiple choice

In topology, what is the term for a space that is both connected and locally connected?

  1. Path-Connected Space

  2. Simply Connected Space

  3. Locally Connected Space

  4. Connected Space
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

A locally path-connected space is a space that is both connected and locally connected.

Multiple choice

Which type of communication system is used for transmitting data and information between trains and wayside equipment?

  1. Global Positioning System (GPS)

  2. Wi-Fi

  3. Bluetooth

  4. Radio frequency identification (RFID)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Radio frequency identification (RFID) systems are commonly employed in railroad communication to transmit data and information between trains and wayside equipment, enabling real-time tracking and monitoring.