CS0-003 Question #544: Real Exam Question with Answer & Explanation

The correct answer is A: Sandboxing. To test email links and attachments for malicious content before delivery, sandboxing is the most effective solution.

Submitted by jian89· Mar 6, 2026Security operations

Question

A cybersecurity analyst is recommending a solution to ensure emails that contain links or attachments are tested before they reach a mail server. Which of the following will the analyst most likely recommend?

Options

ASandboxing
BMFA
CDKIM
DVulnerability scan

Explanation

To test email links and attachments for malicious content before delivery, sandboxing is the most effective solution.

Common mistakes.

B. MFA (Multi-Factor Authentication) enhances login security but does not test email content for malicious links or attachments.
C. DKIM (DomainKeys Identified Mail) is an email authentication method that verifies the sender's identity and message integrity, but it does not scan attachments or links for malware.
D. A vulnerability scan identifies weaknesses in systems or applications but does not actively test incoming email attachments or links for malicious behavior.

Concept tested. Email Security (Sandboxing)

Reference. https://learn.microsoft.com/en-us/microsoft-365/security/defender-for-office365/safe-attachments-about?view=o365-worldwide

Topics

#Email security#Sandboxing#Malware analysis#Threat prevention

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