wireless 4

Question 2

What does IPsec stand for?

Answer 2

Internet Protocol Security

Question 3

True or False: IPsec operates at the transport layer of the OSI model.

Answer 3

False

Question 4

What are the two main modes of operation in IPsec?

Answer 4

Transport mode and Tunnel mode

Question 5

In which IPsec mode is only the payload of the IP packet encrypted?

Answer 5

Transport mode

Question 6

In Tunnel mode, what does IPsec encrypt?

Answer 6

The entire original IP packet

Question 7

Fill in the blank: In Tunnel mode, a new IP header is added to the packet, which is known as the ________ header.

Answer 7

outer

Question 8

Which IPsec mode is commonly used for VPN connections?

Answer 8

Tunnel mode

Question 9

True or False: Transport mode is typically used for end-to-end communication between two hosts.

Answer 9

True

Question 10

What is the primary purpose of IPsec?

Answer 10

To secure IP communications by authenticating and encrypting each IP packet

Question 11

Which protocol in IPsec is responsible for establishing a secure connection?

Answer 11

Internet Key Exchange (IKE)

Question 12

What is the default mode of IPsec when no mode is specified?

Answer 12

Tunnel mode

Question 13

In which IPsec mode is the original IP header visible to intermediate routers?

Answer 13

Transport mode

Question 14

True or False: IPsec can provide confidentiality, integrity, and authentication.

Answer 14

True

Question 15

What type of encryption is commonly used in IPsec?

Answer 15

Symmetric encryption

Question 16

What is the role of the AH protocol in IPsec?

Answer 16

To provide integrity and authentication for IP packets

Question 17

What does ESP stand for in the context of IPsec?

Answer 17

Encapsulating Security Payload

Question 18

Fill in the blank: The ________ mode is preferred for site-to-site VPNs.

Answer 18

Tunnel

Question 19

Which IPsec mode would you use for securing communications between two applications on the same host?

Answer 19

Transport mode

Question 20

True or False: IPsec can only be used with IPv4.

Answer 20

False

Question 21

What is one key advantage of using Tunnel mode?

Answer 21

It can secure traffic between networks over untrusted networks.

Question 22

What type of authentication does the AH protocol provide?

Answer 22

Connectionless integrity and data origin authentication

Question 23

True or False: The ESP protocol provides encryption and optional authentication.

Answer 23

True

Question 24

What is a key difference between AH and ESP?

Answer 24

AH provides only integrity and authentication, while ESP provides confidentiality, integrity, and authentication.

Question 25

Fill in the blank: ESP can encrypt data using various ________ algorithms.

Answer 25

encryption

Question 26

For which scenario is Transport mode most suitable?

Answer 26

Direct communication between two hosts.

Question 27

What is the main disadvantage of using Transport mode?

Answer 27

It does not provide protection for the entire IP packet.