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Exam SY0-501 topic 1 question 754 discussion

Actual exam question from CompTIA's SY0-501
Question #: 754
Topic #: 1
[All SY0-501 Questions]

Which of the following provides PFS?

  • A. AES
  • B. RC4
  • C. DHE
  • D. HMAC
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Suggested Answer: C 🗳️
by AllenFox at July 6, 2020, 10:11 p.m.

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rrs5414
Highly Voted 4 years, 10 months ago
Anytime a CompTIA question asks about ensuring PFS look for any of the used abbreviations of Diffie Hellman
upvoted 55 times
[Removed]
4 years, 1 month ago
Thank you!
upvoted 1 times
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AllenFox
Highly Voted 4 years, 10 months ago
PFS - Perfect Forward Secrecy.
upvoted 18 times
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Aarongreene
Most Recent 4 years, 1 month ago
Perfect forward Secrecy (PFS) is an attribute of Diffie-Hellman and Elliptic Curve Diffie-Hellman key agreement methods in Ephemeral mode (DHE and ECDHE respectively). Security enhancement provided by PFS is the following: If the server private key is being compromised, this does not give an attacker a chance to decrypt sniffed sessions.
upvoted 4 times
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