Exam 220-1101 topic 1 question 52 discussion

The computer is unable to locate the operating system tell us 1.) could be booting from a blank drive the BIOS isn't detecting, or a USB is connected 2.) Could be booting from the wrong location (Boot order) 3.) incorrect partition. several other reasons-won't touch them all Also, "degraded state" tells us it has RAID storage at least I'm guessing that's a safe assumption. Missing operating system could be it, but I go with what could cause it.. B, and C final answer.

BC are correct

i think BE is correct here.

The error messages appear on a server, meaning the first error message refers to a RAID array. And a disk without an OS is inherently not bootable, so B and C.

I also think: B & C. Reason: it says: one or more hard disks > RAID seems to be backed up, with regard to the answers. Surely there was an OS before the malfunction of (at least) one hard disk, but now it cannot be found > C. bootable device not found. The fact that D. Data loss is voted so often here makes no sense because we don't know what kind of RAID it is. In the best case scenario, the degraded RAID disk can be replaced and no data loss has occurred at all. In any case, there is no indication from the text that points to data loss. Answer: B & C

Correct Answer: BD

Answer: B. RAID failure E. Controller failure There is no argument about RAID failure, but "degraded" status means one or more drives in the RAID array are not functioning correctly, which could be due to various reasons including RAID or controller failure.

unexpected reboot - so it was ok (so bootable device was found) but then hard drive failed and that means data loss (system was on that drive)

The most likely causes of the errors are: B. RAID failure: If the message states that one or more disks are in a degraded state, it is likely that there has been a failure in the RAID array, which is a group of drives that work together to provide data redundancy or improved performance. C. Bootable device not found: If the message states that the OS is missing, it is likely that the server cannot find the bootable device that contains the operating system, which is necessary to start the server. This can be caused by a variety of issues, including disk failure, incorrect boot order, or missing boot files. Other causes listed, such as missing drives in the OS, data loss, controller failure, CMOS corruption, and TPM malfunction, can also contribute to the errors, but are less likely to be the root cause based on the information provided.

Its BC, not data loss and heres why. Lets say you have a RAID 0. If one of the devices fails, you lost all the data. In that case it would be data loss. However, lets say its a RAID 1. In that case, you havent lost any data, in the professional sense. Its like saying you have a backup of the drive and the drive fails. Yeah, but the backup still has the data so you havent lost anything. However, the drive can still prevent the OS from loading in certain cases. If the failed drive was the active drive, the BIOS will fail to locate the OS until you mark the partition on the backup drive as active. For both RAIDs the OS isnt found, but only one case had data loss. As for RAID 5, I believe if the drive had the OS partition and it failed, you would need to use a USB to temporarily boot to the OS and recover the data. I suppose in that case it can be seen as data loss, since its not immediately accessible, and only accessible in a compressed, slow format, but even so, RAID 1 being degraded wouldn't be data loss.

"OS missing" indicates that the Operating System is not found, it can be caused by missing drives in the OS or bootable device not found Answers are A& B

I'd go with BC but this is classic CompTIA 'gotcha' question. You could easily make the argument that it's BD since the OS not being found is a loss of that data.

BD is correct. C is not applicable as Boot device not found error occurs when the hard disk does not support the system boot process. As it indicates, Windows OS can't find a bootable device to boot from. Usually, it can be an internal hard drive, external USB drive, optical CD/DVD ROM drive, and network adapter

B and D first error message is going to be a RAID problem but note that it is an unexpected reboot that caused the servers to give the error messages and if that unexpected reboot was cause by something like a power surge, that could cause data loss hence not being able to boot up the OS. it has happened to me before so I am going B and D

Correct BC

I think the answer is B & C