5.4.7 Practice Questions TestOut PC Pro
You want to create a software RAID 1 array on your Windows 11 workstation using Disk 1 and Disk 2. What do you need to do with Disk 1 and Disk 2 before configuring them for a RAID 1 array? Answer Format both disks with the same file system. Convert the disks from dynamic to basic. Verify that both disks are the same size. Convert the disks from basic to dynamic.
Convert the disks from basic to dynamic. Explanation You can only use dynamic disks to create a software RAID array in Windows. Therefore, you need to convert Disk 1 and Disk 2 (using the Disk Management tool) from basic disks to dynamic disks. With RAID 1, you write redundantly on both disks. If the disks are not the same size, the mirroring is limited to the size on the smaller disk. However, this does not impact preparing the disks for use in a RAID 1 array. While it's important to configure the disks with a file system, this step is part of configuring the RAID 1 software array. You do not need to do this before the configuration process.
You have a computer with three hard disks. A RAID 0 volume uses space on Disk 1 and Disk 2. A RAID 1 volume uses space on Disk 2 and Disk 3. Disk 2 fails. Which of the following is true? Answer Data on the RAID 1 volume is accessible. Data on the RAID 0 volume is not. Data on the RAID 0 volume is accessible. Data on the RAID 1 volume is not. Data on both volumes is still accessible. Data on both volumes is inaccessible.
Data on the RAID 1 volume is accessible. Data on the RAID 0 volume is not. Explanation In this scenario, Disk 2 is shared between both volumes. If Disk 2 fails, the RAID 1 volume is still accessible because RAID 1, which uses mirroring, can sustain a loss of a single disk. The data on the RAID 0 volume is not accessible. RAID 0 uses striping, which distributes the data evenly between multiple disks. If a single disk fails, the entire volume is lost.
You are configuring a new system, and you want to use a RAID 0 array for the operating system using SATA disks and a special controller card that includes a RAID processor. Which RAID method should you use? Answer Hardware JBOD Operating system Software
Hardware Explanation Hardware RAID uses a special controller card that includes a RAID processor. While it is the most expensive RAID method, it provides much better performance and is more reliable than other methods. Software RAID uses a driver and the system CPU for controlling RAID operations. While some RAID controller cards support RAID configuration, they do not have an onboard RAID processor and are classified as software RAID. Operating system RAID uses RAID features within the operating system. Like software RAID, the system CPU is used for RAID operations. JBOD (Just a Bunch of Disks) is a spanned volume.
You have configured Disk 3 and Disk 4 on your Windows 11 workstation as a RAID 1 array with the NTFS file system, and you have assigned F as the drive letter for the array. Each disk has an individual storage capacity of 1 TB. However, when you check the available storage size of F, you notice that it only lists 1 TB (instead of 2 TB) of available disk storage space. What should you do to resolve the issue? Answer Make sure both disks are set to dynamic instead of basic. You need to change to a RAID 5 array. Nothing. The RAID array is working as designed. Change the volume to a spanned volume.
Nothing. The RAID array is working as designed. Explanation You do not need to do anything. A RAID 1 array provides mirroring, which means that the same data is available on both disks. This means that the total size of the volume is equal to just the size of one of the disks in the array. In this case, the total volume size is still 1 TB, even though each disk is capable of storing 1 TB. You change the format of the disks from basic to dynamic before creating the RAID array. A RAID 5 array requires three disks, not two. In addition, you can't create a RAID 5 array on a Windows workstation. You can only do this on server versions of Windows. While a spanned volume spans across multiple hard disk drives (much like a RAID volume), it is not a RAID method. A spanned volume simply glues two disks together to create a volume without any redundancy or performance improvement.
Jessica is concerned about losing data due to a hard disk failure. Her computer will only support a maximum of three disks. To protect her data, she has decided to use RAID (Redundant Array of Independent Disks). Which of the following RAID types would give Jessica the BEST mirrored data protection? Answer RAID 0 RAID 1 RAID 5 RAID 10
RAID 1 Explanation RAID 1 is the only mirrored solution that can work on three or less drives. RAID 0 and RAID 5 protect data using striping. RAID 10 uses mirroring, but this requires a minimum of four disks.
One of your customers wants you to build a personal server that he can use in his home. One of his concerns is making sure that he has at least one data backup stored on the server in the event that a disk fails. You have decided to back up his data using RAID. Since this server is for personal use only, the customer wants to keep costs down. Therefore, he would like to keep the number of drives to a minimum. Which of the following RAID systems would BEST meet the customer's specifications? Answer RAID 0 RAID 1 RAID 5 RAID 10
RAID 1 Explanation RAID 1 protects memory from a single disk failure and provides high-read performance. RAID 1 also only requires a minimum of two disks. RAID 5 would also protect data from a single disk failure but requires a minimum of three disks, and RAID 10 requires a minimum of four disks.
Which of the following drive configurations uses striping with parity for fault tolerance? Answer RAID 5 RAID 0 RAID 1 RAID 10
RAID 5 Explanation RAID 5 uses disk striping, but provides fault tolerance for a single disk failure. Disk striping breaks data into units and stores the units across a series of disks by reading and writing to all disks simultaneously. RAID 0 uses disk striping and offers no fault tolerance. A failure of one disk in the set means that all data is lost. RAID 1 provides fault tolerance, but does not use striping. A RAID 10 array nests a mirrored array within a striped array.
A computer that is being used by the HR department needs to ensure that all of the data on that computer is protected from a single hard disk failure. The data needs to be read as quickly as possible, and the HR department would like to maximize drive use as much as possible. This computer can use up to three hard drives. Which of the following RAID types would meet these requirements and provide the BEST data protection? Answer RAID 0 RAID 1 RAID 5 RAID 10
RAID 5 Explanation A RAID 5 volume combines disk striping across multiple disks with parity for data redundancy. Parity information is stored on each disk. If a single disk fails, its data can be recovered using the parity information stored on the remaining disks. RAID 5 also provides an increase in performance for read operations. With three drives, RAID 5 uses approximately 33% overhead, whereas RAID 1 and 10 use 50%. RAID 0 does not provide fault tolerance. If one disk in the set fails, all data is lost. RAID 10 requires a minimum of four disks. This computer only has three.
You have been asked to implement a RAID 5 solution for an engineer's desktop workstation. What is the minimum number of hard disks you can use to configure RAID 5? Answer Two Three Four Five Six
Three Explanation A RAID 5 array stripes data and parity information across multiple hard disks. To complete a RAID 5 array, a minimum of three hard disks is required. RAID 0 and RAID 1 can both be implemented with a minimum of two hard disks.
You work for a small company as the human resources specialist. Since the company is fairly small, you are maintaining all of the employee information on your desktop computer, which is running Windows 11. This computer has two high-capacity hard disks. You want to ensure that this information is protected from a hard disk failure, so you want to set up a Windows software RAID system. Which of the following would be your BEST solution? Answer Use spanned volumes. Use RAID 5 volumes. Use striped volumes. Use mirrored volumes.
Use mirrored volumes. Explanation A Windows software RAID system can be configured on Windows 11 using the Windows Disk Management tool. Of the available options from within Disk Management, you would need to configure a mirrored volume to protect your data from a disk failure. Disk mirroring requires two available drives with sufficient storage. Once configured, the data written to a mirrored volume is duplicated to both drives. This duplication, or mirroring, means that if one of the mirrored drives fails, all of the data can still be retrieved from the remaining good drive. A spanned volume is a dynamic volume consisting of disk space on more than one physical disk. This method does not duplicate the data. If a spanned volume drive fails, the data is lost. A striped volume uses the free space on more than one physical hard disk to create a bigger volume (similar to a spanned volume). However, a striped volume writes across all volumes in the stripe in small blocks, distributing the load across the disks in the volume. In other words, when a single file is written, some of the file will be on one disk, and the rest of the file will be on another. This makes writing files faster. It does not, however, protect the data in the event of a disk failure. RAID 5 requires more than two disks.
