Which of the following uses passphrases rather than passwords for secure email?

Question

Which of the following uses passphrases rather than passwords for secure email?

A.SSH

B. SSL

C. GP

D.IPSEC

Answer 1

None. These are secure communication protocols. They use encryption keys - not "passwords" or "passphrases". Only an *application* (such as an e-mail or SSH client) can use passwords or passphrases to generate the encryption keys used by the underlying protocols.

In other words, it depends on the application. You can have, for instance, two different SSH applications - one of them using passwords and the other - passphrases.

Answer 2

I believe C should read PGP not GP. PGP would use Passphrases for secure email, file encyption, etc.