How will network datagrams be protected at network layer, Computer Network Security

(a) Consider the subsequent authentication options:

A. Using password.

B. Using pin and fingerprint

Which option A or B provides stronger security and why?

(b) Give one example of a strong password. Why should passwords be strong?

(c) In quantum cryptography, light is polarized before transmission. If a wave of light is polarized first by 00followed by 450 and finally by 900, what is the intensity of the light after each polarization i.e. after 00, after 450 and after the final 900. Assume intensity of incident light is Io

(d) How will network datagrams (packets) be protected at the network layer?

(e) Does SSL protect against eavesdropping? Does SSL protect against traffic analysis? Justify your answer.

(f) Name three SSL protocol from the SSL protocol stack.

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