70-217 - Interesting Backup Question For Today Only

Author

Interesting Backup Question For Today Only

unreal

2002-07-24, 7:16 pm

Hi all, think you'ouy, can enlighten me on this question from NEWRIDER-217 Exam Book ? Can'nt untie this knot, It goes like this:

Bobby has set up a backup schedule for the servers and is configuring the servers to perform backups. He configures the servers to do a full Sunday at 1 a.m. Futhermore , he configures the servers to perform a differential backup Monday, Tuesday, Wedneday, Thursday and Friday nights at 1 a.m.

On Friday at 10 a.m, a server that Bobby has confgured this way goes down. How much data is lost ?

A. Everything since the full backup

B. Everything since the Tueday differential.

C. Everything since the Wednesday differential.

D. None of the above.

The answer was C- and I would not think so, because I know, to recover,just need a full/Normal backup plus a differential should suffice. So , since Bobby did a differential on Friday at 1 a.m, then in fact , he is able to recover almost everything since (Friday 1 a.m), with the Full/Normal backup tape from the last Sunday.

Am I missing something ?

Tech Ranger

2002-07-24, 7:46 pm

First of all, what does 1 AM at night mean? 1 am is in the morning.

Zaraspook

2002-07-24, 7:54 pm

I think it should read - everything since Thursday's differential instead, since his last differential backup was Thursday night at 1:00AM (or Friday morning at 1:00AM, depending upon how you look at it.) His server goes down at 10:00AM Friday, therefore, he loses everything from the 1:00AM to 10:00AM time period, after restoring the full backup and the last differential.

Tech Ranger

2002-07-24, 8:08 pm

Therefore, the answer is "D".

unreal

2002-07-25, 7:41 pm

Thanks Tech Ranger & Zaraspook, I guess not all book's answers are correct, probably a 'typo' mistake.

Tech Ranger

2002-07-25, 7:55 pm

All books contain errata. Usually a web site lists what has been found and the corrections.

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