Chapter 5 Network Security (recap)

What is the primary goal of network security? 

• To increase network speed

• To prevent unauthorized access and ensure data integrity

• To reduce network costs

• To simplify network configuration

What is a common vulnerability of Wireless LANs (WLANs)?

• Requires physical cabling

• Limited scalability

• High cost of implementation

• Data can be accessed by anyone within radio frequency range if not encrypted

Which of the following is NOT a type of wireless authentication technique?

• Encrypted Authentication

• Open System Authentication

• Shared Key Authentication

• Null Authentication

Which encryption algorithm is used in WEP key generation?

• AES

• DES

• RC4

• SHA-256

How does WPA2 improve security compared to WEP?

• By using TKIP

• By using AES encryption

• By disabling encryption

• By allowing open authentication

What is the primary purpose of a firewall in a network?

• To increase internet speed

• To provide wireless connectivity

• To manage network devices

• To prevent unauthorized access to the network

What is the disadvantage of using MAC filtering for wireless security?

• It is time-consuming to manage

• It is too expensive to manage

• It does not require configuration to manage

• It is incompatible with most devices

What is the role of a digital signature in network security?

• To encrypt data

• To manage user passwords

• To provide proof of authenticity and data integrity

• To block unauthorized users

What is the default authentication method in wireless networks?

• Open System Authentication

• Encrypted Authentication

• Null Authentication

• Shared Key Authentication

What is the main difference between WEP and TKIP protocols?

• TKIP is faster than WEP

• WEP is more secure than TKIP

• WEP uses AES encryption, while TKIP does not

• TKIP uses dynamic keys, while WEP uses static keys