You work as a Network Administrator for Net Soft Inc. You are designing a data backup plan for your company's network. The backup policy of the company requires high security and easy recovery of data

Question

Options

• ATake a full backup daily and use six-tape rotation.
• BTake a full backup on Monday and a differential backup on each of the following weekdays.
• CTake a full backup daily with the previous night's tape taken offsite.
• DTake a full backup on alternate days and keep rotating the tapes.
• ETake a full backup on Monday and an incremental backup on each of the following weekdays.
• FTake a full backup daily with one tape taken offsite weekly.

• A
  11% (5)
• B
  5% (2)
• C
  80% (35)
• E
  2% (1)
• F
  2% (1)

Explanation

Option C satisfies both requirements simultaneously: a daily full backup ensures the simplest possible recovery (one tape, no reconstruction needed), while moving the previous night's tape offsite every day provides strong security against on-site disasters like fire, theft, or flood - meaning you always have a recent, protected copy.

Why the distractors fail:

• A & D - daily or alternate-day full backups with rotation make no provision for offsite storage, leaving all tapes vulnerable to the same physical disaster.
• F - offsite is only weekly, so up to six days of data could be lost in a disaster; "daily" security coverage is broken.
• B (differential) - recovery requires two tapes (Monday's full + the latest differential) and there's no offsite security component.
• E (incremental) - recovery is the most complex, requiring Monday's full backup plus every incremental tape since then; also lacks offsite security.

Memory tip: Think of C as the "belt and suspenders" answer - daily full = maximum recovery simplicity (one tape restores everything), offsite = maximum security. Whenever an exam question pairs both security and easy recovery, look for the option that moves a fresh full-backup tape offsite every day, not just weekly.

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