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

What is a modem?

  1. Device that connects computers together

  2. Device that provides access to the internet

  3. A brand of computer

  4. The cord that gives your computer power.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A modem (modulator-demodulator) is a hardware device that converts data from a digital format into a format suitable for transmission over an analog medium, such as telephone or cable lines, providing internet access.

Multiple choice

Which device connects computers together to form a network?

  1. Router

  2. Computer

  3. Modem

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

A router is a networking device that forwards data packets between computer networks. It is responsible for connecting multiple devices to form a network and managing traffic between them.

Multiple choice

What is communications media?

  1. Any media you can communicate with

  2. How nodes are connected in a network

  3. Any device connected to a network.

  4. Special computer accessible to many users
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Communications media refers to the physical or wireless paths (like cables, fiber optics, or radio waves) used to connect nodes in a network and transmit data between them.

Multiple choice

Which of these is NOT an example of a node?

  1. Router

  2. Cell Phone

  3. Computer

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

A node is any device connected to a network that can send, receive, or forward information. WIFI is a technology or standard for wireless networking, not a physical device or node itself.

Multiple choice

LAN stands for what?

  1. Land Area Network

  2. Local Area Network

  3. Locally Accepted Node

  4. Linked Anyone Network
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

LAN stands for Local Area Network, which is a network that connects computers and devices in a limited area such as a home, school, or office building.

Multiple choice

The internet is what type of network?

  1. LAN

  2. MAN

  3. WAN
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The internet is a Wide Area Network (WAN) because it spans a large geographical area, connecting smaller networks across cities, countries, and continents.

Multiple choice

It is possible to chain VPN servers together.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chaining VPNs, often called multi-hop or double VPN, involves routing traffic through multiple VPN servers sequentially to increase anonymity and security.

Multiple choice

What is Machine-to-Machine (M2M) Communication?

  1. Communication between two or more machines without human intervention

  2. Communication between a machine and a human

  3. Communication between two or more humans using machines

  4. Communication between a machine and a network
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

M2M communication refers to the exchange of information between two or more machines without the need for human intervention.

Multiple choice

Which technology allows for the transmission of data over a wireless network, enabling devices to connect to the Internet without the use of cables?

  1. Wi-Fi

  2. Bluetooth

  3. Cellular Network

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

Wi-Fi technology allows for the transmission of data over a wireless network, enabling devices to connect to the Internet without the use of cables. It has become a widely adopted technology for home, office, and public spaces.

Multiple choice

Which of the following is a type of wireless network that uses radio waves to transmit data over short distances?

  1. Cellular Network

  2. Wi-Fi

  3. Bluetooth

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

Cellular networks, Wi-Fi, and Bluetooth are all types of wireless networks that use radio waves to transmit data over short distances.

Multiple choice

What is the standard for wireless local area networks (WLANs)?

  1. 802.11

  2. 802.15

  3. 802.16

  4. 802.20
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

802.11 is the standard for WLANs, which are wireless networks that allow devices to connect to the internet and communicate with each other within a limited range.