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Exam SY0-501 topic 1 question 358 discussion

Actual exam question from CompTIA's SY0-501
Question #: 358
Topic #: 1
[All SY0-501 Questions]

Which of the following would allow for the QUICKEST restoration of a server into a warm recovery site in a case in which server data mirroring is not enabled?

  • A. Full backup
  • B. Incremental backup
  • C. Differential backup
  • D. Snapshot
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Suggested Answer: A 🗳️

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Jenkins3mol
Highly Voted 5 years, 7 months ago
http://typesofbackup.com/incremental-vs-differential-vs-full-backup/ full backup for sure
upvoted 16 times
KhalilAreig
5 years, 6 months ago
A differential backup is a cumulative backup of all changes made since the last full backup, i.e., the differences since the last full backup. The advantage to this is the quicker recovery time, requiring only a full backup and the last differential backup to restore the entire data repository
upvoted 4 times
ClintBeavers
4 years, 11 months ago
Right explanation, wrong conclusion. Differential requires 2 restorations while a full backup only requires one. Therefore, a full backup is a quicker restoration than a differential.
upvoted 4 times
hlwo
4 years, 6 months ago
the full backup is already in the warm site what you talking about . read what a warm site means. The answer is differential backup
upvoted 2 times
Not_My_Name
4 years, 6 months ago
The questions says "server data mirroring is not enabled", so there is no data at the warm site. (Which sounds more like a cold site to me...) So the use of a full backup would lead to the fastest restore.
upvoted 7 times
Dedutch
4 years, 1 month ago
Mirroring would be like a live DR pipe that moves data in real time. I would assume a warm site has a full backup but i wish the question provided those details. Say a weekly full backup is sent to the warm site what kind of daily backups should you take for fastest restore? Then you would know differential, because a daily full back up would be larger then the differential chunk you would be sending over. Still I would assume since it says warm site that the answer is differential... I'm not convinced either is neccesarily wrong due to ambiguity.
upvoted 1 times
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Elb
Highly Voted 5 years, 2 months ago
The keyword to me is : "Restoration of" Yes, a Full backup takes longer than incremental backup, which is again faster than differential backup. Depending on the size of what you need to backup, a full backup is obviously slower at bigger sizes, but if your backing up something small a full backup might be faster since it has "no logic". Same goes for restores... so lets check this: Full = F Differential = D Incremental = I ************** B = Backup R = Restore ************** 1 = Fastest 2 = Faster 3 = Slowest ************** B R F 3 1 D 2 2 I 1 3 Answer: The fastest to restore is FULL Backup!
upvoted 12 times
usam2021
4 years ago
I agree, to "restore" the full backup is faster. "Remember this If you have unlimited time and money, the full backup alone provides the fastest recovery time." (Darril Gibson)
upvoted 2 times
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legendman123
Most Recent 3 years, 9 months ago
guys here a hint.... they mentioned how there is not DATA MIRRORING in place. so, that being said. you're gonna NEED a FULL BACKUP because there is no data mirroring in place. you can't do incremental/ differential back ups when you dont have any pre-existing data backed up to begin with
upvoted 1 times
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EliCash
3 years, 10 months ago
Quickest recovery is Full backup; It has the longer back up time than the others. I saw many bring up warm site. Cold site = no equipment Warm site = is a location that is dormant or performs non-critical functions under normal conditions, but can be rapidly converted to a key operations site. (SY0-501 student guide) Hot Site = is a fully configured alternate network that can be online quickly after a disaster (same handbook) I haven't found anything indicating that the warm site always already has a system with a full drive. You may be thinking that since the operation is at a warm site, a hot site must be up. There is nothing imply that there is a hot site available. In fact the question specifies "for the QUICKEST restoration of a server into a warm recovery site". As for the mirroring not being enabled, that is irrelevant to the request. My final answer remains Full backup.
upvoted 1 times
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Dedutch
4 years, 1 month ago
I think probably full backup but differential could be correct depending on how its configured. Situation 1: A full backup is sent to the warm site weekly. A full backup with differential is done daily at the primary site. In this scenario you would just have to send the differential to the warm site. It would be a much faster recovery than going the full backup route. Scenario 2: No backups are kept at the warm site. In this case a full backup would be the fastest method. Since a warm site is such a broad definition of "between hot and cold" its hard to say what would be there, logically i think you would be doing situation 1, but without more information who knows. Situation 1 is the fastest solution of course.
upvoted 1 times
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hlwo
4 years, 6 months ago
It is easy guys. first it says "QUICKEST restoration" secound it says "warm site recovery " that's means BDC or backup data center . The issue is that most of the time the backup site does not synchronize with PDC primary data center . That been said the differential backup will restore only the data that not been sent to the warm site.
upvoted 1 times
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TeeTime87
4 years, 9 months ago
Its A - Full Backup that takes the shortest amount of time to restore. "On our full backup, you saw that we were able to gather all of the data that we had stored on that system. It does take a long time to backup, but a relatively short time to restore this information since you only need the one tape set to be able to restore an entire full backup." -Professor Messer - Go to 4:10 on the video
upvoted 2 times
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SimonR2
4 years, 10 months ago
It would be full backup, the server data mirroring comment just means that data is not being replicated to the primary site so we would need to restore from backup rather than rely what is already there
upvoted 2 times
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Hot_156
4 years, 10 months ago
VVVV. I would say Full, BUT! When it says mirroring data is not enable, it could mean the last full backup could be up to date or could be not! that is WHY differential backup could make sense. This is my logic now... Which of the following would allow for the QUICKEST restoration of a server into a warm recovery site? For this the answer would be FULL without objection. The question doesnt state anything else. Which of the following would allow for the QUICKEST restoration of a server into a warm recovery site in a case in which server data mirroring is not enabled? Here, the question is implying that the full back up could be not up to date... that is why I am thinking this answer could be right. Everybody knows comptia loves make things easy...
upvoted 4 times
DookyBoots
4 years, 6 months ago
I believe "data mirroring" is when recovery sites are kept up to date with a mirror of current data. Typically this is associated with hot sites. Although warm sites need many things to become full operational, companies mat choose to have a secondary set of data at the recovery site and current.
upvoted 1 times
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cypher9
4 years, 10 months ago
Provided answer is correct. It is Diff backup
upvoted 1 times
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Sam_Slik
4 years, 11 months ago
A: Full Backup
upvoted 1 times
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emar
4 years, 11 months ago
Warm site: all equipment is installed but it doesn’t have internet or telecommunication facilities and doesn’t have current data backups. Answer should be "A"
upvoted 1 times
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JimGrayham
4 years, 11 months ago
"The QUICKEST restoration of a server into a warm recovery site ", the question is only asking how to restore a server in a warm recovery site. A warm recovery site does NOT contain databases, and for you to be able to restore a server in a short amount of time, you use a snapshot. The question does not require us to restore the entire database or backup. Answer is D. Snapshot
upvoted 2 times
EPSBAL
4 years, 10 months ago
I concur. During DR, you restore servers from snapshots (esp. VMs - piece of cake) and DBs/applications from backups.
upvoted 1 times
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ClintBeavers
4 years, 12 months ago
there is no doubt that it is full backup because Incremental and Differential both require the last full backup anyways. If your last backup was a fullback up then you would only have 1 restoration to complete. NO DOUBT IT IS FULL BACKUP.
upvoted 1 times
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JustAName
5 years, 2 months ago
Why does the question specifically mentioned where data mirroring is not enabled. Is that the reason why its a differential backup instead of a full backup?
upvoted 2 times
Not_My_Name
4 years, 6 months ago
If data mirroring was in place, the data would already be on site, so no need to restore anything.
upvoted 2 times
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NeGaTiVeOnE
5 years, 2 months ago
Answer is definitely full. Direct quote from Gibson's book, "A full backup is the easiest and quickest to restore."
upvoted 1 times
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Zacharia
5 years, 2 months ago
The Quickest restoration is obviously the Full backup. -but- "into a warm recovery site.." A Warm Site is a partially configured redundant facility that takes a few days to a few weeks to activate. I wonder what's the rush in restoring the server so quickly for a site that takes that much time to activate.., unless all the other necessities were already taken care of..
upvoted 2 times
MelvinJohn
5 years, 2 months ago
I think the question writer meant to say warm recovery state - not site.
upvoted 1 times
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