Characteristics of Networks
What is a Network?
A network is a collection of connected devices that communicate and share resources.
Networks enable data sharing, remote communication, and secure access to information.
Characteristics of Networks
| Characteristic | Description |
|---|---|
| Connectivity | Devices are interconnected, allowing communication and resource sharing. |
| Scalability | Networks can expand by adding new devices without affecting performance. |
| Security | Networks implement security protocols to protect data from unauthorized access. |
Types of Networks
| Type | Description | Example |
|---|---|---|
| Local Area Network (LAN) | Connects devices within a small geographical area. | School or corporate office network. |
| Wide Area Network (WAN) | Spans large geographical areas, like cities or countries. | The internet is the largest WAN. |
| Personal Area Network (PAN) | Connects personal devices in close range (1–10m). | Bluetooth devices, mobile hotspots. |
| Virtual Private Network (VPN) | Provides secure access over public networks. | Remote access to office servers. |
| Metropolitan Area Network (MAN) | Covers a city-sized area, larger than LAN, smaller than WAN. | Municipal Wi-Fi networks. |
Why Are Networks Important?
- Resource Sharing: Enables access to printers, files, and internet services.
- Communication: Supports messaging, video calls, and email services.
- Remote Access: VPNs allow secure access to company resources from anywhere.
- Security: Networks implement encryption, firewalls, and access control measures.
Key Takeaways
- Networks connect devices for communication, resource sharing, and security.
- Common network types include LAN, WAN, PAN, VPN, and MAN, each suited for different environments.
- LANs are used in homes and offices, while WANs span large areas like the Internet.
- VPNs ensure secure access to private networks over public connections.