computer networks

Question 1

What is a computer network?

Answer 1

A system of computers/devices connected to share data, resources, and information.

Question 2

What is a server computer?

Answer 2

A powerful computer that provides services/resources to client computers.

Question 3

What does a File Server do?

Answer 3

Stores and shares files across the network.

Question 4

What does an Application Server do?

Answer 4

Runs applications for clients over the network.

Question 5

What does a Print Server do?

Answer 5

Manages and controls printing across multiple computers.

Question 6

what does a proxy server do

Answer 6

Acts as an intermediary between clients and the internet, filtering content.

Question 7

What is a client computer?

Answer 7

A normal computer (PC/laptop) that requests services/resources from a server.

Question 8

What is LAN?

Answer 8

A: Local Area Network — connects devices in a small area, usually wired.

Question 9

What is WLAN?

Answer 9

Wireless LAN — connects devices wirelessly over a small area using Wi-Fi.

Question 10

What is WAN?

Answer 10

Wide Area Network — connects multiple LANs over large distances.

Question 11

What is Bluetooth?

Answer 11

Short-range wireless technology (~10 m) for connecting devices.

Question 12

LAN Advantages:

Answer 12

Fast data transfer.

Secure.

Share resources.

Centralized data.

Question 13

LAN Disadvantages:

Answer 13

Limited coverage.

High setup cost.

Less flexible.

Needs maintenance.

Question 14

WLAN Advantages:

Answer 14

Wireless.

Mobility.

Easy to expand.

Connects multiple devices.

Question 15

WLAN Disadvantages:

Answer 15

Limited range.

Slower than LAN.

Security risks.

Interference possible.

Question 16

WAN Advantages:

Answer 16

Connects distant LANs.

Centralized data access.

Global communication.

Share resources across locations.Connects distant LANs.

Question 17

WAN Disadvantages:

Answer 17

Expensive.

Slower than LAN.

Security risks.

Complex maintenance.

Question 18

Bluetooth Advantages:

Answer 18

Wireless short-range.

Low power.

Easy pairing.

Inexpensive.

Question 19

Bluetooth Disadvantages:

Answer 19

Short range (~10 m).

Slower than Wi-Fi.

Limited devices.

Security risks.

Question 20

Advantages: of computer networks

Answer 20

Share resources (files, printers, internet).

Easy communication (messages, emails).

Cost-efficient.

Centralized data.

Question 21

Disadvantages: of computer networks

Answer 21

Security risks.

High maintenance cost.

Dependence on network.

Virus/malware can spread quickly.