Which of the following mail standards relies on a “Web of Trust”?

A.
Secure Multipurpose Internet Mail extensions (S/MIME)

B.
Pretty Good Privacy (PGP)

C.
MIME Object Security Services (MOSS)

D.
Privacy Enhanced Mail (PEM)

Explanation:
“PGP does not use a hierarchy of Cas, or any type of formal trust certificates, but
relies on a “web of trust” in its key management approach. Each user generates and distributes his
or her public key, and users sign each other’s public keys, which creates a community of users
who trust each other. This is different than the CA approach where no one trusts each other, they

only trust the CA.