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Exam 400-251 topic 1 question 20 discussion

Actual exam question from Cisco's 400-251
Question #: 20
Topic #: 1
[All 400-251 Questions]

Which two statements are true when comparing ESMTP and SMTP? (Choose two.)

  • A. Only SMTP inspection is provided on the Cisco ASA firewall.
  • B. A mail sender identifies itself as only able to support SMTP by issuing an EHLO command to the mail server.
  • C. ESMTP mail servers will respond to an EHLO with a list of the additional extensions they support.
  • D. SMTP commands must be in upper case, whereas ESMTP can be either lower or upper case.
  • E. ESMTP servers can identify the maximum email size they can receive by using the SIZE command.
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Suggested Answer: CE 🗳️
by [deleted] at April 3, 2025, 11:59 p.m.

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