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 type of optical fiber is commonly used for long-distance communication due to its low dispersion?

  1. Single-mode fiber

  2. Multi-mode fiber

  3. Graded-index multi-mode fiber

  4. Step-index multi-mode fiber
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Single-mode fiber is commonly used for long-distance communication due to its low dispersion, which minimizes signal distortion over long distances.

Multiple choice

Which type of optical multiplexing technique allows for the transmission of multiple optical signals over a single fiber?

  1. Wavelength-division multiplexing (WDM)

  2. Time-division multiplexing (TDM)

  3. Code-division multiplexing (CDM)

  4. Frequency-division multiplexing (FDM)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Wavelength-division multiplexing (WDM) is a technique that allows for the transmission of multiple optical signals over a single fiber by using different wavelengths.

Multiple choice

Which type of optical network architecture is commonly used for connecting multiple locations over long distances?

  1. Star network

  2. Ring network

  3. Bus network

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

Mesh networks are commonly used for connecting multiple locations over long distances due to their resilience and ability to provide multiple paths for data transmission.

Multiple choice

Which type of optical fiber connector is commonly used for connecting optical fibers in high-speed networks?

  1. SC connector

  2. LC connector

  3. ST connector

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

LC connectors are commonly used for connecting optical fibers in high-speed networks due to their small size, high density, and low insertion loss.

Multiple choice

Which type of optical communication system is commonly used for high-speed data transmission over long distances?

  1. Dense wavelength-division multiplexing (DWDM)

  2. Time-division multiplexing (TDM)

  3. Code-division multiplexing (CDM)

  4. Frequency-division multiplexing (FDM)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dense wavelength-division multiplexing (DWDM) is commonly used for high-speed data transmission over long distances, allowing for the transmission of multiple optical signals at different wavelengths over a single fiber.

Multiple choice

Which type of mirroring technique involves writing data to the primary and mirror copies simultaneously?

  1. Synchronous Mirroring

  2. Asynchronous Mirroring

  3. Local Mirroring

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

Synchronous mirroring involves writing data to the primary and mirror copies simultaneously, ensuring that both copies are always up-to-date. This provides the highest level of data availability and consistency, but it can also lead to slower write operations.

Multiple choice

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

  1. Family network

  2. Friendship network

  3. Work network

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

Random networks are not considered social networks because they lack the structure and organization that characterize social networks.

Multiple choice

What is the term used to describe the technology that enables autonomous vehicles to communicate with each other and with roadside infrastructure?

  1. V2V (Vehicle-to-Vehicle) Communication

  2. V2I (Vehicle-to-Infrastructure) Communication

  3. D2D (Device-to-Device) Communication

  4. M2M (Machine-to-Machine) Communication
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

V2V and V2I Communication allow autonomous vehicles to share information such as speed, location, and trajectory, enhancing safety and coordination.

Multiple choice

What is the name of the technology that allows for the transmission of data over long distances using optical fibers?

  1. Wi-Fi

  2. Bluetooth

  3. Fiber Optics

  4. Cellular Network
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fiber Optics technology utilizes optical fibers to transmit data over long distances, enabling high-speed and reliable communication.

Multiple choice

Which of these is a type of computer network that connects devices within a limited physical area, such as a home or office?

  1. Internet

  2. Intranet

  3. Extranet

  4. Wide Area Network
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Intranet is a private computer network that is used within an organization or company, allowing employees to share resources and information securely.

Multiple choice

What is the name of the device that we use to send and receive messages over long distances?

  1. telephone

  2. computer

  3. radio
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A telephone is a device that we use to send and receive messages over long distances. It works by converting sound waves into electrical signals and then back into sound waves.

Multiple choice

What is the name of the technology that allows multiple telephone calls to be transmitted over a single wire?

  1. Multiplexing

  2. Frequency-division multiplexing (FDM)

  3. Time-division multiplexing (TDM)

  4. Code-division multiple access (CDMA)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Frequency-division multiplexing (FDM) is the technology that allows multiple telephone calls to be transmitted over a single wire.

Multiple choice

What is the name of the technology that allows multiple users to share a single telephone line?

  1. Call waiting

  2. Caller ID

  3. Voicemail

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

Conference calling is the technology that allows multiple users to share a single telephone line.

Multiple choice

What is the name of the technology that allows users to make telephone calls over the Internet?

  1. Voice over Internet Protocol (VoIP)

  2. Internet telephony

  3. IP telephony

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

Voice over Internet Protocol (VoIP) is the technology that allows users to make telephone calls over the Internet.

Multiple choice

Which of the following is NOT a common type of system architecture?

  1. Centralized architecture

  2. Distributed architecture

  3. Hierarchical architecture

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

Centralized architecture is not a common type of system architecture in modern systems engineering, as it tends to create a single point of failure and limit scalability.