_____ is a powerful encryption tool released by Philip Zimmerman in the year 1991.
(a) PGP (Protected Good Privacy)
(b) AES (Advanced Encryption Standard)
(c) PGP (Pretty Good Privacy)
(d) DES (Data Encryption Standard)
This question was addressed to me during an interview for a job.
My question comes from Ethical Hacking in division Introduction to Ethical Hacking of Cyber Security