TYPES OF COMPUTER NETWORK - Undercode Testing

You Should Know:

Understanding the types of computer networks is essential for anyone in the IT or cybersecurity field. Below are the primary types of computer networks, along with practical commands and steps to configure and troubleshoot them:

1. Local Area Network (LAN)

A LAN connects devices within a limited area, such as a home, office, or building.
Command to check network interfaces on Linux:
```
ifconfig
```
Command to test connectivity:
```
ping <IP_address>
```

2. Wide Area Network (WAN)

A WAN covers a broad area (e.g., the internet) and connects multiple LANs.
Command to trace the route of a packet:
```
traceroute <domain_name_or_IP>
```
Command to check network status on Windows:
```
netstat -an
```

3. Metropolitan Area Network (MAN)

A MAN spans a city or campus, larger than a LAN but smaller than a WAN.
Command to list active connections on Linux:
```
ss -tuln
```

4. Personal Area Network (PAN)

A PAN is for personal devices, such as Bluetooth connections.
Command to scan for Bluetooth devices on Linux:
```
hcitool scan
```

5. Virtual Private Network (VPN)

A VPN creates a secure connection over the internet.
Command to start a VPN connection on Linux:
```
sudo openvpn --config <config_file.ovpn>
```

What Undercode Say:

Understanding the types of computer networks is crucial for effective network management and cybersecurity. Whether you’re configuring a LAN, troubleshooting a WAN, or securing a VPN, mastering these commands will enhance your IT skills. For further reading, check out Computer Networking Basics and Linux Network Commands. Always practice these commands in a safe environment to avoid unintended disruptions.