D-UN-OE-23 · Question #57
Refer to the exhibit. Which two MD5 authentication mechanisms does the configuration support?
The correct answer is A. SMTP AUTH LOGIN B. CRAM-MD5. Options A and B are correct because both SMTP AUTH LOGIN and CRAM-MD5 are SMTP authentication mechanisms - they verify the identity of the sender before allowing mail relay. CRAM-MD5 (Challenge-Response Authentication Mechanism) explicitly uses MD5 hashing, while SMTP AUTH…
Question
Refer to the exhibit. Which two MD5 authentication mechanisms does the configuration support?
Exhibit
Options
- ASMTP AUTH LOGIN
- BCRAM-MD5
- CSTARTTLS
- DSSL
How the community answered
(37 responses)- A86% (32)
- C3% (1)
- D11% (4)
Explanation
Options A and B are correct because both SMTP AUTH LOGIN and CRAM-MD5 are SMTP authentication mechanisms - they verify the identity of the sender before allowing mail relay. CRAM-MD5 (Challenge-Response Authentication Mechanism) explicitly uses MD5 hashing, while SMTP AUTH LOGIN is an authentication method that appears alongside CRAM-MD5 in the configuration as a supported auth mechanism.
Why C and D are wrong: STARTTLS and SSL are encryption protocols/commands - they secure the transport channel between mail servers but do not authenticate users. The question specifically asks about authentication mechanisms, not encryption.
Memory tip: Split the choices into two categories - "Who are you?" (authentication: LOGIN, CRAM-MD5) vs. "Protect the pipe" (encryption: STARTTLS, SSL). Any answer with "AUTH" or "MD5" in the name is authenticating; any answer involving TLS/SSL is encrypting. These are complementary but distinct functions.
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