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    PracticeCPA®CPA ISC Practice Exam 4Question 63
    Hard1 markMultiple Choice
    Area I: Information SystemsRansomwareBackupsArea I

    CPA · Question 63 · Area I: Information Systems

    A company uses 'Ransomware' protection. Which backup strategy is most effective against ransomware that encrypts connected drives?

    Answer options:

    A.

    Mirroring to a secondary drive on the same server.

    B.

    Immutable or Air-gapped backups

    C.

    RAID 5

    D.

    Cloud sync (e.g., Dropbox)

    How to approach this question

    Ransomware attacks everything it can reach. You need a backup it CAN'T reach (Air-gapped) or CAN'T change (Immutable).

    Full Answer

    B.Immutable or Air-gapped backups✓ Correct
    Immutable backups (WORM - Write Once Read Many) or air-gapped backups (offline) prevent ransomware from encrypting or deleting the backup data, ensuring recovery is possible.

    Common mistakes

    Thinking RAID or standard cloud sync protects against ransomware.
    Question 62All questionsQuestion 64

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