Computer Knowledge

Computer Networks

2,256 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

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.

Multiple choice

Which protocol is primarily used for communication between sensors and actuators 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
B Correct answer
Explanation

LIN is a low-speed protocol specifically designed for communication between sensors and actuators in automotive networks, enabling efficient data exchange for basic functions and control.

Multiple choice

Which protocol is commonly used for communication between automotive ECUs and external devices, such as smartphones and diagnostic tools?

  1. Controller Area Network (CAN)

  2. Local Interconnect Network (LIN)

  3. FlexRay

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

Bluetooth is a wireless protocol that enables communication between automotive ECUs and external devices, such as smartphones, diagnostic tools, and other wireless devices, providing connectivity and data exchange capabilities.

Multiple choice

What is the primary function of the SAE J1939 protocol in automotive networks?

  1. Powertrain control

  2. Multimedia and infotainment applications

  3. Diagnostics and programming

  4. Communication between ECUs and external devices
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SAE J1939 is a protocol specifically designed for communication between ECUs and external devices, such as diagnostic tools, programming devices, and other electronic systems, enabling data exchange and diagnostics.

Multiple choice

What is the primary mode of data dissemination by NRSC?

  1. Print media

  2. Electronic media

  3. Both print and electronic media

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

NRSC disseminates geographical data through both print and electronic media. Print media includes publications such as maps, atlases, and reports, while electronic media includes online platforms, GIS data portals, and mobile applications.

Multiple choice

Which invention was responsible for the deaths of many people in the early days of the internet?

  1. Dial-up modem

  2. Ethernet cable

  3. Wi-Fi

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

Early dial-up modems were often unreliable and caused many people to lose their internet connection, leading to frustration and even death in some cases.

Multiple choice

What is the difference between a circuit-switched network and a packet-switched network?

  1. Circuit-switched networks establish a dedicated connection between two devices, while packet-switched networks do not.

  2. Circuit-switched networks are more reliable than packet-switched networks.

  3. Circuit-switched networks are cheaper than packet-switched networks.

  4. Circuit-switched networks are more secure than packet-switched networks.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Circuit-switched networks establish a dedicated connection between two devices, which means that the entire path between the two devices is reserved for their use. Packet-switched networks, on the other hand, do not establish a dedicated connection between two devices. Instead, data is sent in packets, which are small units of data that are routed through the network based on their destination address.

Multiple choice

What is the difference between a local area network (LAN) and a wide area network (WAN)?

  1. A LAN is a network that connects devices in a single location, while a WAN is a network that connects devices in different locations.

  2. A LAN is more reliable than a WAN.

  3. A LAN is cheaper than a WAN.

  4. A LAN is more secure than a WAN.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A LAN is a network that connects devices in a single location, such as a home or an office. A WAN, on the other hand, is a network that connects devices in different locations, such as different buildings or different cities.

Multiple choice

What is the maximum rate at which information can be transmitted over a communication channel without errors?

  1. Entropy

  2. Mutual Information

  3. Channel Capacity

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

Channel capacity is the maximum rate at which information can be transmitted over a communication channel without errors, determined by the channel's characteristics.

Multiple choice

Which information measure quantifies the amount of information that can be reliably transmitted over a communication channel?

  1. Entropy

  2. Mutual Information

  3. Channel Capacity

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

Channel capacity quantifies the amount of information that can be reliably transmitted over a communication channel, taking into account the channel's noise and interference characteristics.

Multiple choice

Which technology is used to provide in-flight entertainment and connectivity services to passengers during a flight?

  1. Satellite communication

  2. Wi-Fi

  3. Bluetooth

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

Satellite communication is the primary technology used to provide in-flight entertainment and connectivity services to passengers during a flight. It allows aircraft to connect to satellites in orbit, enabling the transmission of data, voice, and video content to and from the aircraft.

Multiple choice

What technology is used to establish communication through Cave Internet?

  1. Wi-Fi

  2. Bluetooth

  3. Radio waves

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

Radio waves are commonly used to establish communication through Cave Internet due to their ability to penetrate rock and soil.

Multiple choice

Which of the following is a key skill for an IaaS Network Engineer?

  1. Strong understanding of IaaS networking concepts and technologies

  2. Experience in designing and implementing IaaS networks

  3. Ability to troubleshoot and resolve IaaS network issues

  4. Excellent communication and customer service skills
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An IaaS Network Engineer must have experience in designing and implementing IaaS networks to effectively perform their duties.