350-701 Content Security Practice Question
An organization is implementing email authentication to prevent domain spoofing. They have deployed SPF and DKIM. Which additional record should they publish to instruct receiving mail servers on how to handle emails that fail SPF or DKIM checks?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
DMARC TXT record
DMARC (Domain-based Message Authentication, Reporting & Conformance) tells receiving servers how to handle emails that fail SPF/DKIM (e.g., reject or quarantine).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CNAME record for DKIM
Why it's wrong here
DKIM uses a TXT record, not CNAME, and it is already deployed.
- ✗
TXT record with v=spf1
Why it's wrong here
That is an SPF record, which the organization already has.
- ✗
MX record with priority 0
Why it's wrong here
MX records are for mail routing, not authentication policy.
- ✓
DMARC TXT record
Why this is correct
DMARC defines policy for handling authentication failures.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-701 exam.