Computer Maintenance Unit 5 2024-25

Dumas, who has excellent mechanical aptitude, owns a computer with two hard drives. One drive is used for the operating system and the other drive is used for his personal files. He decides to install a third disk in a RAID 1 configuration to protect the disk with his files against data loss. He is not too concerned about data loss on the disk with the operating system because he could easily reinstall the OS, so that disk is not included in the RAID configuration. When he is done, he powers up his computer, no error messages are displayed, yet he is distraught because all his data is lost. Why would this happen?

• The new drive was smaller than the original drive so the data from the original did not fit.

• Since the new drive had no data, and RAID 1 mirrors data, it erased the data on the original.

• The RAID expansion card is not seated properly so the RAID drives are not being detected.

• He didn't back up his data. When RAID is configured all data on participating drives is lost.

You have a desktop system with a 2.5 inch 500 GB SDD and a laptop with a 200 GB SDD. You want to replace the 500 GB SSD on the desktop with a larger SSD and use the 500 GB SSD in the laptop. All data has been backed up. What factors do you need to consider?

• An SSD with a form factor that fits a desktop will not fit in a laptop because they are different.

• You need to buy a desktop to laptop disk caddy to successfully install the SSD in the laptop.

• You can simply proceed to install the SDD from the desktop laptop directly in the laptop.

• The power and data interfaces are different on a laptop, so you need a special cable adapter.

Your computer has three drives in a RAID 5 configuration. One of the drives fails so you replace it right away. Immediately upon replacing the drive you notice that the overall performance seems to have been degraded. You research the issue and conclude that this is the expected behavior. How can you rationalize this behavior?

• You can't rationalize this behavior. It is a false statement. Performance should not be degraded.

• It takes time to rebuild the data on the new drive. During this time performance is degraded.

• When a RAID 5 drive fails, the data is temporarily written to pagefile.sys which is slower than RAID 5.

• The new drive was not detected so the system continues to use RAID 5, but in a degraded mode.

Lucas works at a small production company that receives contracts to perform high-end video editing and rendering. He needs to buy systems with the ability to write 30 Gb/sec to a storage medium. What standard should the systems support?

• eSATA

• SATA 3.x

• SATA Express

• NVM Express

Explain the difference between RAID 0, RAID 1, and RAID 5. Select two.

• All three flavors of RAID need at least two disks for proper implementation.

• RAID 1 has the capability of rebuilding lost using the data stored on the parity disk.

• All three flavors of RAID could be implemented using hardware or software RAID.

• RAID 0 stripes data across disks, RAID 1 mirrors data, and RAID 5 uses parity.

• All three RAID configurations support fault tolerance and can prevent data loss.

Leroy buys three identical 2 TB SSDs to implement a fault tolerant RAID configuration. He configures RAID 1 using the three disks, and later discovers that the total storage is only 2 TB. What alternative, if any, does Leroy have?

• Implement RAID 0

• Implement RAID 01

• Implement RAID 10

• Implement RAID 5

• He has no alternative

Your friend has compiled a moderate collection of movies they have bought over the years. They all reside on a media server they assembled with remote access capabilities. They would like to have a physical copy of each movie on optical media for off-site storage. Most of the movies consume between 60 and 120 GB of storage. What type of optical storage media should they use to back up the movies? Select two.

• DVD-RW DL

• DVD+RW DL

• BD-RE DL

• BD-R TL

• BD-R QL

Juridia buys a new 16 GB flash drive, she takes it out of the package, and tries to copy an 8 GB file to it. However, the operation fails with an error message indicating the file is too large. Which of the following statements are most likely to be true? Select two.

• The flash drive needs to be reformatted with the NTFS or exFAT file system.

• The flash drive was shipped from the factory without low-level formatting.

• The flash drive was shipped from the factory with files that need to be deleted.

• The flash drive is not working properly and needs to be replaced with a new one.

• The flash drive has the FAT32 file system, which supports files up to 4 GB in size.

Cirrus was hired to start a multimedia group at a major corporation. He has been asked to buy high-end equipment to ensure it will not be obsolete in three or four years. He buys a video camera capable of recording 8 MB/sec. What type of SD memory card should he use in the camera?

• C6

• C10

• V6

• V10

Keion works as a freelancer creating websites and designing logos for clients. He recently had a hard drive failure and lost work for a client, and he would like to prevent the same type of problem from happening again. Keion does not want to rely on a backup but would like a way to ensure that his data is safe on his computer. You recommend that he create a RAID array that will provide fault tolerance and not suffer data loss if one drive fails. What RAID configuration should you recommend to Keion?

• RAID 0

• RAID 1

• RAID 5

• RAID 10