This key facts covers Wireless Security (WPA2/WPA3) within Wired & Wireless Networks for GCSE Computer Science. Revise Wired & Wireless Networks in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 7 of 10 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Wireless Security (WPA2/WPA3)
Why Wireless Needs Encryption:
Radio waves broadcast in all directions - anyone nearby can receive the signal. Without encryption, they could read your data!
WiFi Security Standards:
- WEP (Wired Equivalent Privacy): Old, INSECURE - cracked in minutes. Never use!
- WPA (WiFi Protected Access): Better, but still vulnerable. Outdated.
- WPA2: Current standard - strong encryption (AES). Use this minimum!
- WPA3: Latest standard - even stronger protection. Best choice if devices support it.
How WPA2/WPA3 Works:
- You enter WiFi password when connecting
- All data transmitted over air is encrypted using that password
- Even if intercepted, data is unreadable without password
- Only devices with correct password can decrypt the transmissions
Best Practices:
- Always use WPA2 minimum (WPA3 if possible)
- Use strong password (12+ characters, mix of types)
- Change default router admin password
- Hide SSID (network name) if extra security needed
- Enable guest network for visitors (isolated from main network)
Practice questions for Wired & Wireless Networks
What does WAP stand for in networking?
Describe three disadvantages of using a wireless network connection compared to a wired connection.