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PCCET · Question #44

When signature-based antivirus software detects malware, what three things does it do to provide protection? (Choose three.)

The correct answer is B. alert system administrators C. quarantine the infected file D. delete the infected file. Signature-based antivirus software protects systems by alerting administrators, quarantining, or deleting malware upon detection.

Submitted by suresh_in· Apr 18, 2026Endpoint Security

Question

When signature-based antivirus software detects malware, what three things does it do to provide protection? (Choose three.)

Options

  • Adecrypt the infected file using base64
  • Balert system administrators
  • Cquarantine the infected file
  • Ddelete the infected file
  • Eremove the infected file's extension

How the community answered

(66 responses)
  • A
    6% (4)
  • B
    91% (60)
  • E
    3% (2)

Why each option

Signature-based antivirus software protects systems by alerting administrators, quarantining, or deleting malware upon detection.

Adecrypt the infected file using base64

Decrypting an infected file using base64 is not a standard action for antivirus software; base64 is an encoding method, not a decryption mechanism for malware.

Balert system administratorsCorrect

Antivirus software commonly alerts system administrators or users to inform them of detected threats and prompt necessary security actions.

Cquarantine the infected fileCorrect

Quarantining an infected file moves it to an isolated, secure location, preventing its execution or spread while allowing for further analysis or safe removal.

Ddelete the infected fileCorrect

For severely malicious or unrecoverable files, antivirus software may delete them to completely eliminate the threat from the compromised system.

Eremove the infected file's extension

Removing an infected file's extension is an ineffective and non-standard method for malware protection, as it does not neutralize the malicious code or prevent its potential execution.

Concept tested: Antivirus malware detection and remediation actions

Source: https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/manage-detections-with-microsoft-defender-for-endpoint?view=o365-worldwide

Topics

#Antivirus software#Malware remediation#Endpoint protection#Threat response

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