CHAPTER 1: INTRODUCTION TO COMPUTER NETWORKS
1.1 Definition
A computer network is a system where multiple computing devices are connected to
share data, resources, and services.
1.2 Benefits of Networking
Resource sharing (printers, storage)
Faster communication
Centralized data management
Scalability
Cost efficiency
Remote access
1.3 Types of Networks
1. PAN (Personal Area Network)
Very short range
Uses Bluetooth, USB, NFC
2. LAN (Local Area Network)
Small geographical area
Used in schools, offices
High speed (100 Mbps – 10 Gbps)
3. MAN (Metropolitan Area Network)
Covers a city
Managed by ISPs or telecoms
4. WAN (Wide Area Network)
Covers large/geographical areas
Example: The Internet
5. CAN (Campus Area Network)
Connects multiple LANs across a campus
1.4 Network Models
Peer-to-Peer: No central server
Client-Server: Central server manages resources
1.1 Definition
A computer network is a system where multiple computing devices are connected to
share data, resources, and services.
1.2 Benefits of Networking
Resource sharing (printers, storage)
Faster communication
Centralized data management
Scalability
Cost efficiency
Remote access
1.3 Types of Networks
1. PAN (Personal Area Network)
Very short range
Uses Bluetooth, USB, NFC
2. LAN (Local Area Network)
Small geographical area
Used in schools, offices
High speed (100 Mbps – 10 Gbps)
3. MAN (Metropolitan Area Network)
Covers a city
Managed by ISPs or telecoms
4. WAN (Wide Area Network)
Covers large/geographical areas
Example: The Internet
5. CAN (Campus Area Network)
Connects multiple LANs across a campus
1.4 Network Models
Peer-to-Peer: No central server
Client-Server: Central server manages resources
