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CISSP-ISSAP Exam - Question 21


Maria works as a Network Security Officer for Gentech Inc. She wants to encrypt her network traffic. The specific requirement for the encryption algorithm is that it must be a symmetric key block cipher. Which of the following techniques will she use to fulfill this requirement?

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Correct Answer: D

To encrypt her network traffic using a symmetric key block cipher, Maria should use AES (Advanced Encryption Standard). AES is a widely used symmetric key block cipher known for its strength and efficiency. It is the successor to DES (Data Encryption Standard), which is now considered insecure due to its shorter key length. RSA and PGP, on the other hand, are not symmetric key block ciphers; they are used for asymmetric encryption.

Discussion

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[Removed]Option: D
Oct 21, 2021

AES is also symmetric key block cipher. Why it is not an answer?

aosroyal
Apr 29, 2022

AES stands for ASYMMETRIC encryption standard. what do you think?

cbcretaceous27
Nov 11, 2022

What are you talking about? AES stands for Advanced Encryption Standard. DES was considered weak decades ago and it should not be used for anything. If the "right" answer is DES over AES without elaborating on why, then the question is trash.

BanzaaaiOption: C
Sep 24, 2022

C. DES only

resortwriOption: D
Nov 26, 2022

AES is a symmetric block cypher and is stronger than DES.

Geddy1ngOption: D
Mar 2, 2023

correct answers should be A,C,D as they all are symmetric block clippers, if need to be chosen one - D is the best answer.

Geddy1ngOption: D
Dec 14, 2022

I am fully agree that answer should be "D"

Geddy1ngOption: D
Dec 14, 2022

the answer should be AES - "D"

74gjd_37
Oct 22, 2023

ACD is the correct answer

1ecb475Option: D
Jun 6, 2024

the answer should be AES - "D"