350-701 Content Security Practice Question
An organization is using Cisco ESA and wants to ensure that emails sent from their domain are authenticated using a cryptographic signature. Which email authentication method should be configured?
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
✓
DKIM
DKIM (DomainKeys Identified Mail) uses a digital signature to verify that an email was not tampered with and is from the claimed domain.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DMARC
Why it's wrong here
DMARC uses SPF/DKIM results to define policy; it doesn't provide a signature itself.
- ✗
SPF
Why it's wrong here
SPF verifies the sending IP, not a cryptographic signature.
- ✗
SenderBase
Why it's wrong here
SenderBase is a reputation system, not an authentication method.
- ✓
DKIM
Why this is correct
DKIM provides a cryptographic signature for email authentication.
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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.