Wired and Wireless Networks

Types of Networks

Wired networks: These are the ones that use cables to connect devices in the network. They are categorised as Ethernet (or LAN) and they often use technologies such as Twisted Pair Cables, Coaxial Cables, and Fiber Optic Cables.
Wireless networks: These networks use radio waves or infrared signals to communicate. They are often labelled as Wi-Fi.

Components of Wired Networks

Router: This device connects the network to the internet and to other networks. It directs data along the network.
Switch: It connects devices within the same network, efficiently directing communication between devices.
Ethernet Cable: This cable connects devices within the wired network.

Components of Wireless Networks

Wireless Router: Similar to a wired router, but it also includes a wireless access point, allowing wireless devices to connect to the network.
Wireless Access Point: It allows wireless devices to connect to the wired network.

Advantages of Wired Networks

Speed: Wired networks typically offer faster data transfer speeds than wireless networks.
Reliability: They are less likely to experience interference, thus offering a more stable connection.
Security: Wired networks tend to be more secure as data is harder to intercept.

Advantages of Wireless Networks

Mobility: Wireless networks offer easy and flexible access within the range of the wireless network.
Ease of Installation: Setting up a wireless network often involves less physical cabling and hardware.

Disadvantages of Wired Networks

Installation: Installation can be difficult and time-consuming due to the need for physical cabling.
Flexibility: Wired networks are less flexible as devices need to be physically connected by cable.

Disadvantages of Wireless Networks

Speed: The data transfer rate can be slower compared to the wired network.
Security: Wireless networks can be more vulnerable to hackers as they can be accessed remotely.
Interference: Various factors such as distance, physical obstructions, and other electronic devices can cause interference in the wireless signal.

Security Considerations

Encryption: Used by both wired and wireless networks to scramble data in a way that can only be understood by a device with the correct encryption key.
Firewalls: These are designed to block unauthorised access to a network while still allowing outward communication.
Passwords: Both wired and wireless networks use passwords to restrict access to authorised users.
MAC Filtering: A network can limit access to devices with specific MAC (Media Access Control) addresses. This is used more often in wireless networks.