You are the Network Administrator for a small business. You need a widely used, but highly secure hashing algorithm. Which of the following should you choose?

Question

Options

• AAES
• BSHA
• CEAP
• DCRC32

• A
  2% (1)
• B
  91% (43)
• C
  4% (2)
• D
  2% (1)

Explanation

SHA (Secure Hash Algorithm) is the correct choice because it is a widely adopted, cryptographically secure hashing algorithm designed specifically to produce a fixed-length digest that verifies data integrity - making it the industry standard for password storage, digital signatures, and certificates. AES (A) is a symmetric encryption algorithm, not a hashing algorithm - it encrypts/decrypts data rather than producing a one-way digest. EAP (C) is an authentication framework used in wireless and point-to-point networks, not a hashing algorithm at all. CRC32 (D) is a cyclic redundancy check used for error detection (e.g., in file transfers), not a secure hash - it is trivially reversible and not suitable for security purposes.

Memory tip: Think SHA = Security Hash Always - when you need a secure hash, SHA is the answer; the others are encryption (AES), authentication (EAP), or error-checking (CRC32).

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