WorksheetsA+ - 2B - Select and Install Storage Devices
Total questions: 21
Worksheet time: 22mins
Mass storage devices, including fixed disks, removable storage, solid-state drives (SSDs), hard disk drives (HDDs), and optical drives, provide non-volatile storage for computers. Fixed disks are internal and come in standard form factors like 5.25 inches, 3.5 inches, and 2.5 inches, fitting into corresponding drive bays in the computer chassis. Removable devices and media like external drives, USB drives, and memory cards allow data transfer between devices. These devices vary in reliability, performance, and use cases, influencing their selection.
SSDs use flash memory for persistent storage and outperform HDDs in terms of read performance. They can connect via SATA, mSATA, or PCIe interfaces, offering higher data transfer rates. HDDs store data on platters with magnetic coating and read/write heads, their performance reliant on RPM and access time. They mainly use SATA interfaces and have 3.5-inch or 2.5-inch form factors.
RAID arrays offer fault tolerance; RAID 0 stripes data across disks without redundancy, RAID 1 mirrors data on two disks for redundancy, RAID 5 stripes data with distributed parity, and RAID 10 combines mirroring and striping. Removable storage comes in enclosures or as flash drives/memory cards, offering portability. Optical drives, like CDs, DVDs, and Blu-rays, use lasers to read data and are available in recordable/rewritable formats.
What type of storage device is characterized by its ability to hold data even when the system is powered off?
Volatile storage devices
Mass storage devices
L2 Cache
Dynamic storage devices
Which form factor is commonly used for SSDs in desktop PCs and laptops?
5.25 inches
3.5 inches
2.5 inches
1.8 inches
What distinguishes SSDs from HDDs?
SSDs use magnetic platters
SSDs have higher RPM than HDDs
SSDs use flash memory technology
SSDs have larger form factors than HDDs
Which RAID level offers the best fault tolerance but also consumes more disk space?
RAID 0
RAID 1
RAID 5
RAID 10
What is the primary characteristic of RAID 0?
Data mirroring for redundancy
Striping with distributed parity
Increased fault tolerance
Improved performance through data spreading
What is the capacity range for Blu-ray discs?
Up to 700 MB
Up to 4.7 GB
Up to 25 GB per layer
Up to 108 MBps
Which type of external drive requires its own power supply?
USB flash drive
SSD drive
External HDD
Optical drive
What determines the maximum amount of space usable on larger drives in a RAID array where disks have different sizes?
The size of the largest disk
The average size of all disks
The size of the smallest disk
The total sum of disk sizes
Which RAID level combines mirroring and striping?
RAID 0
RAID 1
RAID 5
RAID 10
What is the primary factor that determines the performance of a Hard Disk Drive (HDD)?
RPM
Internal transfer rate
Access time
SATA interface
What technology is primarily used for mainstream storage formats like CDs, DVDs, and Blu-rays?
SSD
RAID
Flash drives
Optical drives
RAID 1 is characterized by:
Striping data with distributed parity
Mirroring data across disks
No redundancy
Stripe of mirrors
Which RAID level offers fault tolerance with distributed parity across disks?
RAID 0
RAID 1
RAID 5
RAID 10
What technology is primarily used for hard disk enclosures offering data interfaces like USB or Thunderbolt?
HDD
SSD
RAID
Flash drive
What is the primary purpose of RAID configurations?
Enhanced read/write performance
Data encryption
Fault tolerance
Disk compression
What is the primary method used by SSDs to optimize device life?
Wear leveling
Disk striping
Parity calculation
Data mirroring
Which type of memory card offers the highest capacity?
SD
SDHC
SDXC
microSD
Which RAID level offers 50% disk space utilization due to disk mirroring?
RAID 0
RAID 1
RAID 5
RAID 10
Which technology uses laser to read data encoded on the disc's surface?
SSD
HDD
RAID
Optical drive
What is the purpose of a read/write head in a hard disk drive?
To spin the platters at high speed
To divide the platters into circular tracks
To access the top and bottom of each platter
To store data on metal or glass platters
What is the capacity of each sector in a hard disk drive?
512 bytes
15,000 or 10,000 rpm
3 ms
180 MBps
What is the measure of how fast read/write operations are performed on the disk platters?
RPM
Access time
Internal transfer rate
Seek time
What is the access time of a high-performance hard disk drive?
Below 3 ms
Around 6 ms
15,000 or 10,000 rpm
110 MBps
Which interface is most commonly used in HDDs?
SATA
EIDE/PATA
SCSI
RPM
What is the measure of the total time for a computer to read/write required data?
Access time
RPM
Seek time
Internal transfer rate
What is the purpose of the actuator mechanism in a hard disk drive?
To spin the platters at high speed
To divide the platters into circular tracks
To access the top and bottom of each platter
To move the read/write head
What is the purpose of low-level formatting in a hard disk drive?
To spin the platters at high speed
To divide the platters into circular tracks
To access the top and bottom of each platter
To define the drive geometry
What does reliability in the context of mass storage devices refer to?
The risk of total device failure
The risk of partial data corruption
The risk of both total device failure and partial data corruption
The risk of data loss during power outage
What is the difference between sequential access and random access?
Sequential access reads data from different locations on the drive, while random access reads data from the same 'block'
Sequential access reads data from the same 'block', while random access reads data from different locations on the drive
Sequential access is faster than random access
Random access is faster than sequential access
What should the primary consideration when comparing different types of storage technology?
Performance for the type of data transfer
Reliability for the type of data transfer
Cost for the type of data transfer
Compatibility for the type of data transfer
What is the main advantage of using a network attached storage (NAS) enclosure?
Improved fault tolerance
Ability to host multiple disk units as a RAID array
Increased disk space utilization
Direct connection to the CPU
What is the purpose of a drive enclosure?
To increase disk capacity
To protect the disk
To provide a data interface
To improve read/write performance
Which type of NAND flash memory used in SSDs is more reliable but also more expensive?
Single level cell (SLC)
Multi-level cell (MLC)
Triple level cell (TLC)
Quadruple level cell (QLC)
What does an NVMe SSD use to communicate with the bus?
Non-volatile memory host controller interface specification (NVMHCI) or NVM Express (NVMe)
Advanced host controller interface (AHCI)
Serial ATA (SATA)
Peripheral Component Interconnect Express (PCIe)
What are the two possible ways to install an NVMe SSD?
As an expansion card to a PCIe slot or to an M.2 slot
As an external drive or to a USB port
As a replacement for the optical drive or to a SATA port
As a secondary internal drive or to a USB port
What is the advantage of using an M.2 adapter card form factor for an SSD?
It is considerably smaller and can be used on laptops as well as PC motherboards
It provides faster transfer rates than other form factors
It is more reliable and less susceptible to wear
It does not require a separate power cable
What type of SSDs typically use the SATA/AHCI bus?
M.2 SSDs
NVMe-based M.2 SSDs
PCIe-based SSDs
SLC-based SSDs
What is the primary advantage of using NVMe over SATA for SSDs?
NVMe has lower latency and higher IOPS
NVMe is cheaper than SATA
NVMe uses less power than SATA
NVMe is more compatible with older systems
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