exam questions

Exam CAS-004 All Questions

View all questions & answers for the CAS-004 exam

Exam CAS-004 topic 1 question 526 discussion

Actual exam question from CompTIA's CAS-004
Question #: 526
Topic #: 1
[All CAS-004 Questions]

A social media company wants to change encryption ciphers after identifying weaknesses in the implementation of the existing ciphers. The company needs the new ciphers to meet the following requirements:

• Utilize less RAM than competing ciphers.
• Be more CPU-efficient than previous ciphers.
• Require customers to use TLS 1.3 while broadcasting video or audio.

Which of the following is the best choice for the social media company?

  • A. IDEA-CBC
  • B. AES-GCM
  • C. ChaCha20-Poly1305
  • D. Camellia-CBC
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Steel16
1 week, 1 day ago
Selected Answer: C
 ChaCha20-Poly1305 is known for its efficiency in software implementations, especially on devices without hardware acceleration, making it more CPU-efficient than AES-GCM  It generally uses less RAM compared to other ciphers  It is supported by TLS 1.3, ensuring secure and efficient encryption for broadcasting video or audio
upvoted 1 times
...
grelaman
5 months, 1 week ago
Selected Answer: C
ChaCha20-Poly1305 is highly efficient on CPUs that lack hardware acceleration for AES (Advanced Encryption Standard). Unlike AES-GCM, which relies heavily on hardware optimizations (like AES-NI instructions) for peak performance, ChaCha20-Poly1305 maintains high performance across a broader range of hardware, including mobile devices and embedded systems. ChaCha20-Poly1305 is fully supported in TLS 1.3, ensuring that customers can use it seamlessly for secure communications during video or audio broadcasts. TLS 1.3 prioritizes modern, secure cipher suites, and ChaCha20-Poly1305 aligns well with its security enhancements.
upvoted 3 times
...
fac161f
6 months, 1 week ago
A. IDEA-CBC - CBC is not supported by TLS 1.3 (Old and likely not used often) B. AES-GCM - Requires Hardware acceleration, if you dont want to sacrafice speed. supported by TLS 1.3 *C. ChaCha20-Poly1305 - The fastest and supported by TLS 1.3 "THE RIGHT ANSWER" D. Camellia-CBC - CBC is not supported by TLS 1.3 (Old , but still used)
upvoted 3 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
Loading ...
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago