Computer Networks

Description: This quiz covers the fundamental concepts, protocols, and applications of computer networks.
Number of Questions: 15
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Tags: computer networks networking fundamentals protocols applications
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What is the primary function of a computer network?

  1. To connect computers and devices for communication

  2. To store and manage data

  3. To process and execute programs

  4. To display information on a screen


Correct Option: A
Explanation:

A computer network is designed to facilitate communication and data exchange between multiple computers and devices.

Which of the following is a widely used network architecture?

  1. Client-server

  2. Peer-to-peer

  3. Star topology

  4. Bus topology


Correct Option: A
Explanation:

The client-server architecture is a common network architecture where clients request services from centralized servers.

What is the purpose of a MAC address in a network?

  1. To identify a specific network interface

  2. To assign an IP address to a device

  3. To establish a connection between two devices

  4. To route data packets across a network


Correct Option: A
Explanation:

A MAC address is a unique identifier assigned to a network interface, allowing it to be distinguished from other devices on the network.

Which protocol is primarily responsible for routing data packets across a network?

  1. TCP

  2. UDP

  3. IP

  4. HTTP


Correct Option: C
Explanation:

The Internet Protocol (IP) is responsible for routing data packets across a network, ensuring that they reach their intended destinations.

What is the primary function of a switch in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To store and manage network data


Correct Option: A
Explanation:

A switch is a networking device that connects devices to a network, allowing them to communicate with each other.

Which of the following is a common application layer protocol used for transferring web pages?

  1. TCP

  2. UDP

  3. HTTP

  4. FTP


Correct Option: C
Explanation:

HTTP (Hypertext Transfer Protocol) is an application layer protocol used for transferring web pages and other resources over the internet.

What is the purpose of a firewall in a network?

  1. To prevent unauthorized access to a network

  2. To improve network performance

  3. To store and manage network data

  4. To connect devices to a network


Correct Option: A
Explanation:

A firewall is a network security device that monitors and controls incoming and outgoing network traffic, preventing unauthorized access to a network.

Which of the following is a common network topology used in small office or home networks?

  1. Star topology

  2. Bus topology

  3. Ring topology

  4. Mesh topology


Correct Option: A
Explanation:

In a star topology, all devices are connected to a central hub or switch, forming a star-like structure.

What is the purpose of a router in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To store and manage network data


Correct Option: B
Explanation:

A router is a networking device that connects multiple networks and routes data packets between them, ensuring that they reach their intended destinations.

Which of the following is a common network security protocol used to encrypt data?

  1. TCP

  2. UDP

  3. SSL/TLS

  4. HTTP


Correct Option: C
Explanation:

SSL/TLS (Secure Sockets Layer/Transport Layer Security) is a network security protocol that encrypts data transmitted between two devices, ensuring secure communication.

What is the purpose of a modem in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To convert digital signals to analog signals


Correct Option: D
Explanation:

A modem is a device that converts digital signals from a computer into analog signals that can be transmitted over a telephone line or other analog medium.

Which of the following is a common network management tool used to monitor and troubleshoot network issues?

  1. Ping

  2. Traceroute

  3. Wireshark

  4. Network Performance Monitor


Correct Option: C
Explanation:

Wireshark is a network management tool that allows users to capture and analyze network traffic, helping to identify and troubleshoot network issues.

What is the purpose of a DNS server in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To resolve domain names to IP addresses

  4. To provide internet access to devices


Correct Option: C
Explanation:

A DNS server is responsible for resolving domain names (e.g., www.example.com) to their corresponding IP addresses, allowing devices to communicate with each other using domain names.

Which of the following is a common network performance metric used to measure the speed of data transfer?

  1. Bandwidth

  2. Latency

  3. Jitter

  4. Packet loss


Correct Option: A
Explanation:

Bandwidth is a network performance metric that measures the maximum amount of data that can be transferred over a network connection in a given amount of time.

What is the purpose of a proxy server in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To provide internet access to devices

  4. To act as an intermediary between clients and servers


Correct Option: D
Explanation:

A proxy server acts as an intermediary between clients and servers, handling requests and responses on behalf of the clients, improving performance and security.

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