>Levels 1 and 2 are incremental backups, but the question is not 100% clear. 1 >is obviously a backup of the difference from 0, but what exactly is 2? The >difference from 0? From 1? To answer, look at B and D.
I think that's quite clear that the level 2 backup is the difference from 1. Otherweise the level names would be useless. Hannes -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Alan McKinnon Sent: Freitag, 19. September 2008 08:41 To: [email protected] Subject: Re: [lpi-discuss] Help: Backup problem On Friday 19 September 2008 04:30:39 Lee Amy wrote: > Hi all, > > I'm going to have some simulation test on 117-102 and encounter a question > by following words. > > Your company has a backup plan which consists in three levels. Once a month > a full backup is made (level 0), once a week a incremental backup is made > (level 1) and every evening an other incremental backup is made (level 2). > After a headcrash of your harddisk, in which order will you restore the > three Backups? > > A.level 2, then level 1, then level 0 > B.level 0, then level 1, then level 2 > C.level 1, then level 0, again level 1, then level 2 > D.level 0, then level 1, again level 0, then level 2 > > I don't know how to answer. Can anyone tell me how to answer this question > and tell me why? After a headcrash, the disk is probably replaced with a blank one. So, you would have first restore the last known good full backup to get back to a known starting point. So you must start with level 0. That means A and C are wrong answers. Levels 1 and 2 are incremental backups, but the question is not 100% clear. 1 is obviously a backup of the difference from 0, but what exactly is 2? The difference from 0? From 1? To answer, look at B and D. D makes no sense at all. Why on earth would anyone restore the original, add a next version then put the old one back? Makes no sense. That leaves B as the remaining answer. This is a classic case of a silly question that is correctly answered by finding dumb possible answers, not by knowing the subject matter. It is also ambiguous. -- alan dot mckinnon at gmail dot com _______________________________________________ lpi-discuss mailing list [email protected] http://list.lpi.org/cgi-bin/mailman/listinfo/lpi-discuss _______________________________________________ lpi-discuss mailing list [email protected] http://list.lpi.org/cgi-bin/mailman/listinfo/lpi-discuss
