Chapter 6: Supporting Hard Drives And Other Storage Devices

11 September 2022
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question
True/False: The 2.5" size hard drive is typically used in devices such as MP3 players.
answer
False
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True/False: The read/write head on a magnetic hard drive is at both the top and bottom of each disk.
answer
True
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True/False: Hard drives that can be used for hot-swapping cost significantly less than regular hard drives.
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False
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True/False: The SATA drive technology utilizes a serial data path.
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True
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True/False: The faster the spindle rotates on a traditional magnetic drive, the better performance it will have.
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True
question
Which statement regarding hard drives is incorrect? the 3.5" size is typically used in desktops; a solid state drive has no moving parts; solid state drives are less expensive than magnetic hard drives; tracks on a hard drive are divided into sectors
answer
solid state drives are less expensive than magnetic hard drives
question
What process writes sector markings to a hard drive?
answer
low-level formatting
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What hard drive technology is used to predict when a drive is likely to fail?
answer
S.M.A.R.T.
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What SATA standard provides a transfer rate of 3 Gb/sec?
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SATA2
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Which statement regarding the selection of a hard drive is accurate? a faster spindle speed keeps the drive cooler but doesn't improve performance; PATA drives are backward compatible with SATA drives; USB drives are a good choice for fast internal drives; magnetic drives have larger capacity for the money than solid state drives
answer
magnetic drives have larger capacity for the money than solid state drives
question
If you are adding a hard drive to a system that already has a drive with Windows installed on it, what should you do?
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boot Windows and use Disk Management to prepare the new drive
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Why might you want to use a RAID 0 disk configuration?
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to improve overall disk performance
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What statement best describes a RAID 5? data from one drive is mirrored to another; it improves performance but not fault tolerance; it requires 3 or more drives and uses parity checking; it takes at least four disks and data is striped and mirrored
answer
it requires 3 or more drives and uses parity checking
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What type of RAID is a combination of mirroring and striping?
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RAID10
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Which rotation speed is not a typical spindle rotation speed for magnetic hard drives? 3100; 5400; 7200; 10000
answer
3100
question
What is the current maximum storage capacity limit of a magnetic tape?
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185TB
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A DAT72 tape is also known by what term?
answer
DDS-5
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How many layers of data can exist on a single side of a Blu-ray disc?
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2
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If a computer is performing slowly due to file fragmentation, what Windows tool can be utilized to rearrange fragments?
answer
defragmentation tool
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What command line utility can be used to repair the BCD on a Windows installation?
answer
bootrec
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Which type of RAID volume is used for fault tolerance and only requires two drives?
answer
RAID1
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The SATA/600 standard is also known by what other name?
answer
SATAIII
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What technology is used to assure that the logical block addressing on a solid state drive does not always address the same physical blocks, in order to distribute write operations?
answer
wear leveling
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The hard drive firmware, UEFI/BIOS, and the OS address the sectors on a hard drive utilizing what technology?
answer
logical block addressing
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A SATA data cable has how many pins?
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7 pins
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How much data can an LTO Ultrium 5 tape hold, native and compressed?
answer
1.5TB native, 3.0TB compressed
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What two different file systems can be used on a Compact Disc (CD)?
answer
CDFS, UDF
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What two SD standards utilize the FAT file system?
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SD, SDHC
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What two optical disc drive standards support writing discs with a total capacity of 8.5GB?
answer
DVD-R DL, DVD+R DL
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What two optical disc drive standards allow for rewritable discs?
answer
DVD-RAM, BD-RE
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What three types of technologies are used inside hard drives?
answer
Solid state drives, magnetic drives, and hybrid drives
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At what three speeds in revolutions per minute might the spindle inside a hard drive rotate?
answer
5400, 7200, and 10,000 RPM
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When the OS addresses sectors on a hard drive as one long list of sequential sectors, what is this technology called?
answer
Logical block addressing (LBA)
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What is the transfer speed for SATA I? SATA II? SATA III?
answer
1.5 Gb/sec, 3 Gb/sec, 6 Gb/sec
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How many pins does a SATA internal data cable have? How many pins does a SATA power cable have?
answer
7 pins, 15 pins
question
What term describes the technology that allows you to exchange a hard drive without powering down the system?
answer
Hot-swapping or hot-plugging
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Which RAID level mirrors one hard drive with a second drive so that the same data is written to both drives?
answer
RAID 1
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Which RAID level stripes data across multiple drives to improve performance and also provides fault tolerance?
answer
RAID 5
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How many hard drives are necessary to implement RAID 10?
answer
Four
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When implementing RAID on a motherboard, where do you enable the feature?
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In UEFI/BIOS setup
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What type of file system is used by Blu-ray discs?
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UDF
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What type of file system is used by SDXC memory cards?
answer
exFAT
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How much data can a CD hold?
answer
700 MB
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How much data can a double-sided, dual-layer DVD hold?
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Advertised as 17 GB but actually 15.90 GB
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How much data can a double-sided, single-layer BD hold?
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25 GB
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Which costs more, a CD-R or a CD-RW disc?
answer
CD-RW
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Which type of flash memory card is currently the smallest type of card?
answer
MicroSD, also the same size as MicroSDHC and MicroSDXC
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What command-prompt command do you use to determine if a drive has bad sectors?
answer
The chkdsk command
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What command can you use to rebuild the BCD
answer
bootrec /rebuildBCD
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What physical sizes of hard drives are installed in laptops?
answer
2.5" and 1.8" drives