CompTIA Security+ (SY0-501) — Question 1004

Two users must encrypt and transmit large amounts of data between them.
Which of the following should they use to encrypt and transmit the data?

Answer options

• A. Symmetric algorithm
• B. Hash function
• C. Digital signature
• D. Obfuscation

Correct answer: A

Explanation

The correct answer is A, as a symmetric algorithm allows for the same key to be used for both encryption and decryption, making it efficient for large data transfers. Options B and C do not provide encryption capabilities, as hash functions are for data integrity and digital signatures authenticate data rather than encrypt it. Option D, obfuscation, only makes data less readable without actual encryption.