24 - Wireless Networks

Question 1

What is the main difference between a wireless and wired network

Answer 1

One uses wires and the other doesn’t

• Instead of a switch, it uses base stations

Question 2

What two layers of the TCP/IP stack are affected by Wireless Networks?

Answer 2

• Link
  
  • 802.11 instead of Ethernet
• Physical
  
  • Radio waves instead of cables

Question 3

What is 802.11?

Answer 3

A communication standard

What Mbps and frequency a communication will be on

Question 4

Because Wireless Networks are more susceptible to cyber attacks, how do we defend against these attacks?

Answer 4

Encryption

Question 5

What are the three types of Wireless Encryption?

Answer 5

1. WEP (Wired Equivalent Privacy)
2. WPA (WiFi Protected Access)
3. WPA2

Question 6

What is WEP (Wired Equivalent Privacy)?

Answer 6

• Oldest encryption scheme
• Uses a 40-bit key
• Weak (by today’s standards)
• Can be cracked in less than 60 seconds
  
  • 🢭Should NOT be your first choice for encryption

Question 7

What is WPA (WiFi Protected Access)?

Answer 7

• Same encryption algorithm as WEP
• Uses a stronger 128-bit key

Question 8

What is WPA2?

Answer 8

• Strongest encryption currently available
• Newer (stronger) encryption algorithm
• Use a 256-bit key

Question 9

What two things do WEP, WPA, and WPA2 provide?

Answer 9

1. Initial authentication
2. Long-term confidentiality