CompTIA Server + SK0-004 Chap 5

You have three drives that have capacities of 500 MB, 750 MB, and 1000 MB. Setting the cost of parity information aside, what is the total capacity of the array? A. 1500 MB B. 2250 MB C. 3000 MB D. 3500 MB

A. Mixing any of the following drive specifications in the same array will result in the entire array using the least capable specification (also called "dumbing down" the array): ■■ Slowest speed (performance) ■■ Smallest size ■■ Smallest buffer

Which of the following provides no fault tolerance? A. RAID 0 B. RAID 1 C. RAID 5 D. RAID 6

A. RAID 0, also known as disk striping, provides no fault tolerance.

Which of the following allows a cable to be a maximum of 1 meter in length? A. SATA B. SCSI C. Fibre Channel D. iSCSI

A. SATA is the slowest and least expensive of the options with a maximum cable length of 1 meter (3 feet).

What is the minimum number of disk required for RAID 5? A. 2 B. 3 C. 4 D. 5

B. A minimum of three drives is required.

Which of the following is attached to the system but cannot replace a bad disk without manual intervention? A. Hot swap B. Hot spare C. Cold spare D. Standby

C. A cold spare is one that is attached to the system and available but cannot replace the bad disk without administrator intervention and in some cases a reboot.

When separate controller cards are used for each disk, what is it called? A. Disk jukebox B. JBOD C. Disk duplexing D. Disk triplexing

C. Disk duplexing is the use of separate controller cards for each disk when implementing disk mirroring (RAID 1), thus providing fault tolerance at both the disk level and the disk controller level, protecting against both a single disk failure and a single controller card failure.

RAID 6 writes parity information across the drives as is done in RAID 5, but it writes two stripes. What is the effect of writing two stripes? A. Speeds performance B. Allows the cable to be longer C. Hurts performance D. Allows you to use only two drives

C. One disadvantage in using RAID 6 is that each set of parities must be calculated separately, which slows write performance.

You have four 500 GB disks in a RAID 10 array. How much space is available for data? A. 500 GB B. 750 GB C. 1000 GB D. 2500 GB

C. Since this is effectively a mirrored stripe set and a stripe set gets 100 percent use of the drive without mirroring, this array will provide half of the total drive space in the array as available drive space.

If a hard drive has 120 GB as calculated using the Base 10 number system, what will be the capacity reported by Windows? A. 120 GB B. 110 GB C. 111.8 GB D. 122.5 GB

C. When the hard disk manufacturer advertises a 120 GB hard drive, they are selling you 120,000,000,000 bytes. Windows divides this number by what it considers a GB (1073741824) and reports the hard disk size as: 120000000000 (bytes)/1073741824 (bytes per GB) = 111.8G

Which of the following is the most costly to implement? A. SATA B. SCSI C. Fibre Channel D. iSCSI

C. While Fibre Channel is the fastest and provides the longest allowable cable length, it is the most costly.

If three 250 MB disks are present in a RAID 5 array, how much space is actually usable for data? A. 125 MB B. 200 MB C. 250 MB D. 500 MB

D. A minimum of three drives is required. RAID 5 uses 1/n (n = the number of drives in the array) for parity information (for example, one third of the space in a three-drive array), and only 1 - (1/n) is available for data. So if three 250 GB drives are used in the array (for a total of 750 GB), 500 GB will be the available drive space.

Which of the following is the best candidate for compression in the server? A. A folder accessed on average once a month B. A folder accessed on average once a day C. A folder accessed on average three times a day D. A folder accessed on average once a year

D. Be aware that when you do this to files and folders that are frequently accessed, you will be placing a load on the CPU of the server because it decompresses the file to make it available and then compresses it again when it is saved.

Which of the following RPMs will provide the fastest access speed when discussing hard disk drives? A. 4800 B. 5400 C. 7200 D. 10000

D. The faster the RPM, the faster the disk access will be.

Which of the following technologies supports hot swapping inherently? A. SAS B. SATA C. SCSI D. Fibre Channel

B. If you are using SATA disks, hot swapping is inherently supported due to the pin layout.

Which command-line utility can be used to manage the size of log files? A. winsxs B. wevtutil C. nlookup D. logutil

B. Managing log files can be done at the command line using the following command, which inserts the name of the log file and the maximum size in bytes: wevtutil sl <LogName> /ms:<MaxSizeInBytes>

Which of the following actions can empty temporary directories? A. Running wevutil B. Running Disk Cleanup C. Running defrag D. Running Disk Check

B. Manually performing a disk cleanup will allow you to get rid of these files (and many other useless files as well), but if you would like to create a batch file, you can automate the process.

Which of the following folders is the component store directory? A. C:\windows B. C:\windows/winsxs C. C:\winsxs D. C:\winnt/winsxs

B. One of the things that you can do in Windows to mitigate the amount of space used by constant updates is to manage a folder called the component store. This folder, called windows\winsxs, contains all the files that are required for a Windows installation.

Which of the following is also called disk mirroring? A. RAID 0 B. RAID 1 C. RAID 5 D. RAID 6

B. RAID 1 is also known as disk mirroring. This is a method of producing fault tolerance by writing all data simultaneously to two separate drives.

Which of the following is not an advantage of hardware RAID over software RAID? A. Decreased processor load B. Ability to do disk duplexing C. Support for online spares D. Faster performance

B. The ability to implement disk duplexing is an advantage of software RAID, not hardware RAID.

Which of the following is an advantage of software RAID over hardware RAID? A. Better performance B. Lower cost C. Better security D. Faster recovery

B. The advantages of using software RAID are ■■ Lower cost ■■ The ability to implement disk duplexing