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Terms in this set [6]
What is an advantage of RAID 5 over RAID 1?
a. RAID 5 improves performance over RAID 1.
b. RAID 5 continues to operate with a failure in two disks; RAID 1 can only operate with a failure of one disk.
c. RAID 5 provides redundancy; RAID 1 does not.
d. RAID 5 provides redundancy for the disk controller.
a. RAID 5 improves performance over RAID 1
Explanation:
RAID 5 provides both fault tolerance and improved performance. RAID 1 [mirroring] provides only fault tolerance with no performance benefit. Both RAID 5 and RAID 1 can only sustain a loss of one disk in the set. Use multiple disk controllers to provide redundancy for the disk controller.
You have been asked to implement a RAID 5 solution for an engineer's desktop
workstation. What is the minimum number of hard disks that can be used to configure RAID 5?
a. 2
b. 3
c. 4
d. 5
e. 6
b. 3
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.
One of the video editors in your
company is worried that he may lose a lot of data if his hard drive fails. He has asked you to come up with a solution. To do this, you have decided to implement a RAID 10 solution on his desktop workstation.
Which of the following is the MINIMUM number of hard disks that can be used?
a. 2
b. 3
c. 4
d. 5
e. 6
c. 4
explanation:
A RAID 10 array nests a mirrored array within a striped array. To create a RAID 10 array, a minimum of four
hard disks is required [two for the mirrored array and two more to stripe the mirror].
Which of the following drive configurations uses striping with parity for fault tolerance?
Correct Answer:
a. RAID 5
b. RAID 1
c. RAID 10
d. RAID 0
a. RAID 5
explanation:
RAID 5 also 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 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.
You are configuring a new system, and you want to use a RAID 0 array for the operating system using SATA disks and the RAID
functionality built into the motherboard.
Which of the following BEST describes the action you will take as part of the configuration?
a. In the BIOS, set the disk mode to IDE.
b. Set master/slave jumpers on the hard drives.
c. Load the RAID drivers during operating system installation.
d. Set the disk mode to AHCI in the BIOS.
c. Load the RAID drivers during operating system installation.
explanation:
If you are using an onboard RAID
controller with SATA drives, edit the CMOS settings and identify the drive type as RAID. This tells the system to load the onboard BIOS for accessing the connected drives. If you want to install the operating system on a RAID array, you need to manually load the controller driver so that Windows can see the RAID array.
You have an existing computer running Windows 10. You want to configure a RAID 1 array in the computer. You install two new SATA drives, then use the RAID controller integrated in the motherboard to define a RAID 1 array using them. When you boot the computer, Windows does not show the logical RAID drive. What should you do?
a. In the BIOS, change the SATA disk mode to AHCI.
b. Install the drivers for the RAID controller.
c. Set the jumpers on the drives to use SATA I mode.
d. In the BIOS, change the SATA disk mode to RAID.
b. Install the drivers for the RAID
controller.
explanation:
You must install the RAID driver so that Windows recognizes arrays created by the motherboard RAID utility. Without the driver, Windows will not be able to see the logical drive defined by the array. When you define the array, you configure the BIOS to use RAID as the SATA type. If you had not completed this step, you would not be able to run the RAID configuration utility. Use AHCI to configure SATA drives to support hot swapping.
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Verified answer
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You can call this method to close a GUI program. a. The root widget’s destroy method b. Any widget’s cancel method c. The sys.shutdown function d. The Tk.shutdown method
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Verified answer
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