If end to end connection is done at a network or IP level, and if there are N hosts, then what is the number of keys required?(a) N(N-1)/2(b) N(c) N(N+1)/2(d) N/2I got this question in my homework.This is a very interesting question from Symmetric Key Distribution topic in section Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

If end to end connection is done at a network or IP level, and if ther

1.	If end to end connection is done at a network or IP level, and if there are N hosts, then what is the number of keys required?(a) N(N-1)/2(b) N(c) N(N+1)/2(d) N/2I got this question in my homework.This is a very interesting question from Symmetric Key Distribution topic in section Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security
Answer» Right option is (a) N(N-1)/2 For explanation I WOULD say: The NUMBER of KEYS required would be N(N-1)/2, SIMILAR to that of a mesh topology network connection (each node is connection line requires a KEY).

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