A company uses an 'Incremental' backup strategy. A full backup is performed on Sunday. Incremental backups are performed Monday through Saturday. If the system crashes on Thursday morning (before Thursday's backup), what is required to restore the system?

Answer options:

Sunday Full + Wednesday Incremental

Sunday Full + Wednesday Differential

Sunday Full + Monday Incremental + Tuesday Incremental + Wednesday Incremental

Wednesday Incremental only

How to approach this question

Understand the chain dependency of Incremental backups.

Full Answer

C.Sunday Full + Monday Incremental + Tuesday Incremental + Wednesday Incremental✓ Correct

Incremental backups save only the data changed since the *last* backup (whether full or incremental). To restore, you need the last Full backup and *every* subsequent incremental backup in order up to the point of failure.

Common mistakes

Confusing Incremental (needs chain) with Differential (needs only last Full + last Differential).

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