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 technology allows for the transfer of data over long distances using fiber optic cables?

  1. Dial-up modem

  2. Ethernet

  3. Wi-Fi

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

Fiber optic technology utilizes thin strands of glass or plastic to transmit data over long distances at extremely high speeds.

Multiple choice

Which technology enables the transmission of data over copper wires?

  1. Dial-up modem

  2. Ethernet

  3. Wi-Fi

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

DSL (Digital Subscriber Line) technology utilizes copper telephone lines to transmit high-speed internet data.

Multiple choice

Which technology allows for the wireless transfer of data over short distances using radio waves?

  1. Bluetooth

  2. Wi-Fi

  3. Cellular

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

Wi-Fi technology enables wireless data transmission over short distances using radio waves, allowing devices to connect to the internet and communicate with each other.

Multiple choice

What is the disadvantage of using NAT?

  1. It can introduce complexity to the network

  2. It can reduce network performance

  3. It can make troubleshooting more difficult

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

NAT can introduce complexity to the network, reduce network performance, and make troubleshooting more difficult.

Multiple choice

What was the name of the first cellular telephone network?

  1. The Advanced Mobile Phone System (AMPS)

  2. The Global System for Mobile Communications (GSM)

  3. The Universal Mobile Telecommunications System (UMTS)

  4. The Long Term Evolution (LTE) network
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Advanced Mobile Phone System (AMPS) was the first cellular telephone network, launched in the United States in 1983.

Multiple choice

What is the term used to describe the handover of a mobile device from one cell tower to another?

  1. Handoff

  2. Roaming

  3. Call forwarding

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

Handoff is the process of transferring a mobile device from one cell tower to another during a call or data session to maintain a continuous connection.

Multiple choice

Which type of fiber optic cable has a larger core diameter?

  1. Single-mode fiber

  2. Multi-mode fiber

  3. Both have the same core diameter

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

Multi-mode fiber has a larger core diameter compared to single-mode fiber, allowing for the transmission of multiple light modes and supporting higher bandwidth.

Multiple choice

Which type of fiber optic connector is commonly used for connecting fiber optic cables?

  1. ST connector

  2. SC connector

  3. LC connector

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

SC connectors are widely used in fiber optic networks due to their simple design, low cost, and reliable performance.

Multiple choice

Which type of fiber optic cable is typically used for connecting devices within a building?

  1. Single-mode fiber

  2. Multi-mode fiber

  3. Both can be used

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

Multi-mode fiber is commonly used for short-distance applications within a building due to its larger core diameter and ability to support multiple light modes.

Multiple choice

Which type of fiber optic cable is designed for underwater applications?

  1. Single-mode fiber

  2. Multi-mode fiber

  3. Armored fiber

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

Submarine cables are specially designed fiber optic cables used for underwater communication, providing high-speed data transmission across vast distances.

Multiple choice

Which type of fiber optic cable is most commonly used in telecommunication networks?

  1. Single-mode fiber

  2. Multi-mode fiber

  3. Plastic optical fiber

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

Single-mode fiber is widely used in telecommunication networks due to its ability to support high bandwidth and long-distance transmission with minimal signal loss.

Multiple choice

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

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

Multiple choice

Which of the following is a common metric used to measure network availability?

  1. Mean time between failures (MTBF)

  2. Mean time to repair (MTTR)

  3. Uptime percentage

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

Network availability is commonly measured using a variety of metrics, including mean time between failures (MTBF), mean time to repair (MTTR), and uptime percentage.

Multiple choice

Which of the following is a common type of network redundancy?

  1. Active-active redundancy

  2. Active-passive redundancy

  3. N+1 redundancy

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

Common types of network redundancy include active-active redundancy, active-passive redundancy, and N+1 redundancy.

Multiple choice

Which of the following is a common technique for reducing network latency?

  1. Using a content delivery network (CDN)

  2. Implementing traffic shaping

  3. Increasing the size of network buffers

  4. Upgrading to a higher-bandwidth network connection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using a CDN is a common technique for reducing network latency by caching content closer to users, reducing the distance that data needs to travel.