Question

In which layer does IPsec work?
(a) Data link layer
(b) Network layer
(c) Transport layer
(d) Presentation layer

Answer 1

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B. Network Layer

AH provides authentication, integrity and anti-replay services atNetwork Layer and above

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Answer 2

Answer:

According to the question, Network layer is the correct option. Network layer does IPsec work. IPsec stands for Internet Protocol security.  

Explanation:

Internet Protocol security is used to secure traffic in the network infrastructure. you can secure network traffic by using IPsec so that unauthorized users or applications can not access private data. In order to implement this IP security we have to implement 2 protocols one is ESP protocol and another one is AH protocol.