M04 review IT Support

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

* 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.

Johan is a hard drive performance engineer working at a major storage device manufacturer. He needs to measure, record, and analyze the throughput, IOPS, and the latency of the different models of drives the company produces. What is the difference between these three parameters? Select three.

* Latency measures the time required to process a data request or a transaction. * IOPS measures the number of read or write operations performed in one second. * Throughput is the amount of data flow through a point in the data path in one second.

During routine maintenance on your server, you discover that one of the hard drives on your RAID array is starting to go bad. After you replace the drive and rebuild the data, you run diagnostics on the RAID controller card with no problems, so you believe you fixed the problem. The next morning you arrive at work and discover that the RAID has completely failed. None of the disks are working. Your server is still running because you installed the OS on a non-RAID disk, but all the data is missing, and the server shows that none of your RAID disks are found. What might be the problem with your server? (Select all that apply.)

* Motherboard * RAID controller

Devon would like to install a new hard drive on his computer. Because he does not have a SATA port available on his motherboard, he has decided to purchase a NVME SSD hard drive. How can Devon attach a NVME device to his computer? (Select all that apply.)

* PCIe expansion card * U.2 port on the motherboard * M.2 slot on the motherboard

Terry came into work and turned on his computer. During the boot process, the computer shut down. When he tried again, the computer showed the error message, OS not found. Terry called the help desk and explained the computer issue. The help desk technician goes to Terry's office and verifies the problem. What are some things the help desk technician could check or try? Select three.

* SATA cable connection * Device boot order * Use Window Startup Repair

Juridia buys new a 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 has the FAT32 file system, which supports files up to 4 GB in size.

Sharon believes the computer she is troubleshooting is having problems with the hard drive. She wants to test her theory and finds an older, known, good, SATA drive in the spare parts bin but notices the gold conductors in the SATA power connector are very distressed. Sharon also realizes that the spare drive also has a 4-pin power connector. What type of power connector will Sharon need to supply power to the hard drive?

4-pin Molex connector

Jessica wants to purchase a new hard drive. She wants a drive that has fast access because she will use it to edit videos on her PC. She also needs a lot of storage and wants to have at least 4 TB available to save her videos. Jessica wants to keep the cost down as much as possible. What type of hard drive should Jessica purchase?

7200 RPM magnetic HDD

Your computer has recently started to generate a few S.M.A.R.T messages. What is the most favorable thing you could do?

Backup your data immediately

You have a computer that is running low on storage, so you decide to install a second hard drive to store your files. You would like to partition the drive you just installed and end up with two volumes. In addition, you want to keep the original hard drive intact, which is where the Windows operating system resides. What process would allow you to meet your objective?

Boot Windows and use Disk Management to prepare the new drive.

Godiva's computer is having issues booting up. She troubleshoots and her best guess is that the BCD is corrupt. In her endeavor to plan a solution and implement it, what command should she include?

Bootrec

Delonte has been using his computer at work every day for two years with no problems. The nature of his work requires him to frequently create and delete test files of different types and sizes. However, he is starting to notice that his computer is slowing down. What Windows tool can be used to verify Windows is relocating data to help with performance?

Defrag and Optimization tool

You recently installed a new RAID controller card in a PCIe expansion slot on your computer. After setting up the controller, you transfer data from the backup you created over to the computer. When you finish the setup, you turn the computer off and return it to its normal location. When you turn the computer on, you immediately receive the error message, "RAID not found." What might be the problem?

Expansion card failed or became unseated.

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

Implement RAID 5

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?

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

You buy a new hard disk drive and install the Linux operating system. You later decide you prefer the Windows operating system so you install it instead. Before you installed either one of the two operating systems, the hard drive had sector markings that allowed you to install the operating system of your choice. What facilitated this capability?

Low-level formatting

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?

NVM Express

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 1

Dr. Everest, a professor at a university, is using custom software to visually demonstrate to his class the different techniques SSDs implement to help improve performance and reliability. Specifically, how the logical block addressing on a solid-state drive does not always address the same physical blocks, to distribute write operations more evenly. What should Dr. Everest call this specific portion of his presentation?

Wear leveling

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?

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