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Question 282 - CAS-004 discussion

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A security administrator wants to detect a potential forged sender claim in tt-e envelope of an email. Which of the following should the security administrator implement? (Select TWO).

A.
MX record
Answers
A.
MX record
B.
DMARC
Answers
B.
DMARC
C.
SPF
Answers
C.
SPF
D.
DNSSEC
Answers
D.
DNSSEC
E.
S/MIME
Answers
E.
S/MIME
F.
TLS
Answers
F.
TLS
Suggested answer: B, C

Explanation:

DMARC (Domain-based Message Authentication, Reporting and Conformance) and SPF (Sender Policy Framework) are two mechanisms that can help detect and prevent email spoofing, which is the creation of email messages with a forged sender address. DMARC allows a domain owner to publish a policy that specifies how receivers should handle messages that fail authentication tests, such as SPF or DKIM (DomainKeys Identified Mail). SPF allows a domain owner to specify which mail servers are authorized to send email on behalf of their domain. By checking the DMARC and SPF records of the sender's domain, a receiver can verify if the email is from a legitimate source or not. Verified

Reference:

https://en.wikipedia.org/wiki/Email_spoofing

https://en.wikipedia.org/wiki/DMARC

https://en.wikipedia.org/wiki/Sender_Policy_Framework

asked 02/10/2024
Bassem Louati
31 questions
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