UGC-NET | UGC NET CS 2015 Jun – III | Question 27

Which are the two modes of IP security?

(A) Transport and certificate

(B) Transport and tunnel

(C) Certificate and tunnel

(D) Preshared and transport

Answer:

(B)

Explanation:

The IP security operation is defined by two distinct standard modes:

1. Transport mode and

2. Tunnel mode.

In transport mode, the outer header determines the IP security policy that protects the inner IP packet.

In tunnel mode, the inner IP packet determines the IP security policy that protects its contents.

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