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 NOT a type of communication network?

  1. Centralized

  2. Decentralized

  3. Wheel

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

The wheel is not a type of communication network.

Multiple choice

Which of these inventions is used to transmit data over long distances?

  1. The telegraph

  2. The telephone

  3. The radio

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

The telegraph was the first invention used to transmit data over long distances.

Multiple choice

Which technology enables mobile devices to communicate with each other without a cellular or Wi-Fi connection?

  1. Bluetooth

  2. NFC

  3. Wi-Fi Direct

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

Bluetooth technology allows mobile devices to communicate with each other over short distances without the need for a cellular or Wi-Fi connection.

Multiple choice

What is the name of the global network of computers that allows users to share information and communicate with each other?

  1. The internet

  2. The World Wide Web

  3. A local area network (LAN)

  4. A wide area network (WAN)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The internet is a global network of computers that allows users to share information and communicate with each other, regardless of their physical location.

Multiple choice

What is the difference between a computer network and the internet?

  1. A computer network is a group of computers connected together, while the internet is a global network of computers

  2. A computer network is a global network of computers, while the internet is a group of computers connected together

  3. A computer network and the internet are the same thing

  4. A computer network is a type of internet
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A computer network is a group of computers connected together, while the internet is a global network of computers that connects computer networks around the world.

Multiple choice

What is the maximum theoretical speed of a Wi-Fi 6 connection?

  1. 1 Gbps

  2. 10 Gbps

  3. 100 Gbps

  4. 1 Tbps
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

The maximum theoretical speed of a Wi-Fi 6 connection is 9.6 Gbps. However, actual speeds may vary depending on factors such as network congestion and interference.

Multiple choice

Which of the following is a type of mobile network architecture?

  1. Cellular

  2. Wi-Fi

  3. Mesh

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

Cellular is a type of mobile network architecture in which the network is divided into small geographic areas called cells. Each cell is served by a base station that provides coverage to the devices within that cell.

Multiple choice

What is the term used to describe the process of a mobile device connecting to a Wi-Fi network?

  1. Roaming

  2. Handoff

  3. Association

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

Association is the process of a mobile device connecting to a Wi-Fi network. This involves exchanging information with the access point and obtaining an IP address.

Multiple choice

What is the term used for the transmission of medical data and information over electronic communication networks?

  1. Telemedicine

  2. Telehealth

  3. Telemonitoring

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

Telematics refers to the transmission of medical data and information over electronic communication networks. It involves the use of technology to collect, transmit, and analyze patient data for remote monitoring and management.

Multiple choice

Which protocol is primarily used for communication between electronic control units (ECUs) in automotive networks?

  1. Controller Area Network (CAN)

  2. Local Interconnect Network (LIN)

  3. FlexRay

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

Controller Area Network (CAN) is a widely adopted protocol for communication between ECUs in automotive networks due to its reliability, low cost, and ability to support multiple nodes.

Multiple choice

What is the primary function of the LIN protocol in automotive networks?

  1. High-speed data transmission

  2. Powertrain control

  3. Low-speed sensor and actuator communication

  4. Multimedia and infotainment applications
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The LIN protocol is primarily used for low-speed communication between sensors, actuators, and ECUs in automotive networks, enabling efficient data exchange for basic functions.

Multiple choice

Which protocol is designed specifically for high-speed data transmission in automotive networks?

  1. Controller Area Network (CAN)

  2. Local Interconnect Network (LIN)

  3. FlexRay

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

FlexRay is a high-speed automotive networking protocol that supports deterministic data transmission and fault-tolerant communication, making it suitable for applications requiring real-time performance.

Multiple choice

What is the primary advantage of using Ethernet in automotive networks?

  1. Low cost and simplicity

  2. High bandwidth and speed

  3. Reliability and fault tolerance

  4. Low power consumption
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethernet offers high bandwidth and speed, enabling the transmission of large amounts of data, such as multimedia content and software updates, in automotive networks.

Multiple choice

Which standard defines the physical layer and data link layer specifications for automotive Ethernet networks?

  1. IEEE 802.3

  2. IEEE 802.11

  3. ISO/IEC 11898

  4. SAE J1939
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IEEE 802.3 defines the physical layer and data link layer specifications for Ethernet networks, including automotive Ethernet networks, providing a standardized framework for data transmission.

Multiple choice

Which protocol is commonly used for diagnostics and programming of automotive ECUs?

  1. Controller Area Network (CAN)

  2. Local Interconnect Network (LIN)

  3. FlexRay

  4. J1939
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

J1939 is a widely adopted protocol for diagnostics and programming of automotive ECUs, providing standardized communication for fault detection, data logging, and software updates.