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______ provides authentication at the IP level.(a) AH(b) ESP(c) PGP(d) SSLThe question was posed to me in an interview.Enquiry is from AH and ESP Protocols topic in portion Transport Layer of Computer Network

Answer»

Right option is (a) AH

To elaborate: The Authentication Header (AH) AUTHENTICATES the origin of data, and guarantees the INTEGRITY of the INFORMATION that’s being sent using IPSec. It also PROVIDES anti-reply security.



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