A+ 1001 RAM and Storage Devices
How many contact pins are used in SODIMM DDR4 SDRAM modules? 200 204 240 260
260
Which of the following statements are true? (Select 2 answers) BD-R discs can be written to once BD-R discs can be erased and written to multiple times BD-RE discs can be written to once BD-RE discs can be erased and written to multiple times
BD-R discs can be written to once and BD-RE discs can be erased and written to multiple times
An actuator arm assembly failure manifested by loud clicking noise emitted from the inside of the computer case is a problem symptom that should prompt for: Data backup and hard drive replacement Replacement of a faulty cooling fan Central Processing Unit (CPU) replacement Data backup and replacement of a faulty primary storage module Power Supply Unit (PSU) replacement
Data backup and hard drive replacement
DDR4-2666 is also known as: PC4-17000 PC4-19200 PC4-21300 PC4-25600
PC4-21300
Which of the following can be used to describe the features of Solid-State Drives (SSDs)? (Select 3 answers) Low performance Relatively high device cost Lower capacity in comparison to magnetic drives High performance Relatively low device cost Higher capacity in comparison to magnetic drives
Relatively high device cost, Lower capacity in comparison to magnetic drives and High performance
Which of the following memory module form factors are used in laptop computers? (Select 2 answers) SODIMM ECC RAM DIMM MicroDIMM C-RIMM
SODIMM and MicroDIMM
A motherboard with color-coded memory slots provides support for multi-channel memory architecture. True False
True
The term "Hot swapping" refers to the ability to replace computer system components without interrupting system operations. True False
True
Which of the following answers describe Double Data Rate 3 Synchronous Dynamic Random-Access Memory (DDR3 SDRAM)? (Select 3 answers) 1 notch on the module contact surface Reads/writes 4 words of data per clock cycle 204 contact pins 2 notches on the module contact surface 240 contact pins Reads/writes 8 words of data per clock cycle
1 notch on the module contact surface, 240 contact pins and Reads/writes 8 words of data per clock cycle
What are some characteristic features of the Double Data Rate 2 Synchronous Dynamic Random-Access Memory (DDR2 SDRAM)? (Select 3 answers) Reads/writes 2 words of data per clock cycle 1 notch on the module contact surface 204 contact pins Reads/writes 4 words of data per clock cycle 240 contact pins 2 notches on the module contact surface
1 notch on the module contact surface, Reads/writes 4 words of data per clock cycle and 240 contact pins
Which of the following are characteristics of a Double Data Rate 4 Synchronous Dynamic Random-Access Memory (DDR4 SDRAM)? (Select 3 answers) 1 notch on the module contact surface Reads/writes 8 words of data per clock cycle 260 contact pins 2 notches on the module contact surface 288 contact pins Reads/writes 16 words of data per clock cycle
1 notch on the module contact surface, Reads/writes 8 words of data per clock cycle and 288 contact pins
Which of the following are SSD form factors used in laptop computers? (Select 2 answers) 1.5 inch 5.25 inch 1.8 inch 2.5 inch 1.3 inch
1.8 inch and 2.5 inch
What is the peak transfer rate of a DDR3-1600 module? 6400 MB/s 8533 MB/s 10667 MB/s 12800 MB/s
12800 MB/s
Which of the following is the maximum rpm value available in modern HDDs? 10,000 rpm 15,000 rpm 25,000 rpm 30,000 rpm
15,000 rpm
What is the capacity of a dual-layer mini Blu-ray disc? 8.544 GB 4.7 GB 7.8 GB 15.6 GB
15.6 GB
What is the most common form factor for SSD SATA drives? 1.8 2.5 3.5 5.25
2.5
Which of the following sizes is the most common magnetic hard disk drive form factor used in laptops? 3.5 inch 5.25 inch 1.8 inch 2.5 inch
2.5 inch
DDR2 SDRAM SODIMM memory modules contain: 200 contact pins 204 contact pins 240 contact pins 260 contact pins
200 contact pins
How many contact pins are used in SODIMM DDR3 SDRAM modules? 200 204 240 260
204
A standard-size single-layer Blu-ray disc can store up to: 15 GB of data 25 GB of data 30 GB of data 50 GB of data
25 GB of data
What is the peak transfer rate of a DDR4-3200 module? 19200 MB/s 21333 MB/s 23466 MB/s 25600 MB/s
25600 MB/s
Which of the following is the size of a magnetic drive form factor for desktops? 1.8 inch 2.5 inch 3.5 inch 5.25 inch
3.5 inch
Hardware RAID Level 10 requires a minimum of: 2 drives 3 drives 4 drives 5 drives
4 drives
A single-sided, single-layer DVD disc can store up to: 4.7 GB of data 7.8 GB of data 8.5 GB of data 9.4 GB of data
4.7 GB of data
What is the peak transfer rate of a DDR2-533 module? 3200 MB/s 4266 MB/s 5333 MB/s 6400 MB/s
4266 MB/s
A standard-size dual-layer Blu-ray disc can store up to: 15 GB of data 25 GB of data 30 GB of data 50 GB of data
50 GB of data
A single-layer mini Blu-ray disc can store up to: 8.544 GB of data 4.7 GB of data 7.8 GB of data 15.6 GB of data
7.8 GB of data
A single-sided, double-layer DVD disc can store up to: 7.8 GB of data 8.5 GB of data 9.4 GB of data 17.08 GB of data
8.5 GB of data
Which of the following is an example of Write Once, Read Many (WORM) storage media? BD-R Flash drive CD-RW Magnetic tape CD-ROM
BD-R
Which of the following are types of storage media that can be read, but not written to? (Select all that apply) BD-R CD-ROM DVD-RW BD-RE DVD-ROM CD-RW
CD-ROM and DVD-ROM
ECC type RAM: Can only detect errors, but does not have the capability to correct them Is another name for parity RAM (the two terms are interchangeable) Offers better performance in terms of speed when compared to a non-ECC type of RAM Can detect and correct errors
Can detect and correct errors
Which type of memory allows for permanent data storage? VRAM DVD-RAM Static RAM Buffered memory DRAM
DVD-RAM
Examples of storage media that can be erased and written to multiple times include: (Select all that apply) BD-R CD-ROM DVD-RW BD-RE DVD-ROM CD-RW
DVD-RW, BD-RE and CD-RW
A Small Outline Dual In-Line Memory Module (SODIMM) is a more compact type of computer memory designed for desktop PCs. True False
False
SDRAM's backward compatibility feature provides a convenient way to build PCs utilizing different types of SDRAM modules. True False
False
Which of the following are characteristic features of Static Random-Access Memory (SRAM)? (Select all that apply) Non-volatile storage media type Faster than Dynamic Random-Access Memory (DRAM) Widely used as system's primary storage media (regular RAM modules installed in memory slots on the motherboard) More expensive in comparison to Dynamic Random-Access Memory (DRAM) Slower than Dynamic Random-Access Memory (DRAM) Volatile storage media type Utilized for CPU cache memory chips Less expensive in comparison to Dynamic Random-Access Memory (DRAM)
Faster than Dynamic Random-Access Memory (DRAM) More expensive in comparison to Dynamic Random-Access Memory (DRAM) Volatile storage media type Utilized for CPU cache memory chip
Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) enables monitoring a system for anticipated: HDD failures Network interface problems Video adapter failures Power spikes
HDD failures
Which of the following are characteristic features of traditional magnetic drives? (Select 3 answers) High capacity Low device cost High performance Low capacity High device cost Low performance
High capacity, Low device cost and Low performance
A data storage solution that integrates HDD and flash memory into a single device is known as a(n): (Select 2 answers) Hybrid drive CompactFlash M.2 drive SSHD Hardware RAID
Hybrid drive and SSHD
SCSI ID: Identifies SCSI devices on a network Identifies device embedded in the physical device on a SCSI chain Serves as an interchangeable term for LUN Identifies physical device on a SCSI chain
Identifies physical device on a SCSI chain
Which of the following is required to take advantage of the performance benefits offered by the multi-channel memory architecture? (Select all that apply) Installing memory modules of matching types Installing memory modules of matching speeds Installing memory modules in any of the free memory slots on the motherboard Installing memory modules of the same capacity Installing modules in appropriate memory slots (slots of matching color) on the motherboard
Installing memory modules of matching types, Installing memory modules of matching speeds, Installing memory modules of the same capacity and Installing modules in appropriate memory slots (slots of matching color) on the motherboard
Hardware RAID Level 0: (Select 3 answers) Is also known as disk striping Decreases reliability (failure of any disk in the array destroys the entire array) Is also referred to as disk mirroring Offers less volume capacity in comparison to RAID 1 Requires at least 3 drives to implement Is suitable for systems where performance has higher priority than fault tolerance
Is also known as disk striping, Decreases reliability (failure of any disk in the array destroys the entire array) and Is suitable for systems where performance has higher priority than fault tolerance
Which of the following is a way to identify logical partitions on a SCSI hard drive? Host ID OUI SCSI ID LUN
LUN
Which of the following are examples of SSD host interfaces? (Select 3 answers) MAPI M.2 PCIe GDI SATA ACPI
M.2, PCIe and SATA
Which memory type can provide a CPU with the fastest access to frequently used data? DRAM Secondary storage Flash memory Multi-level cache
Multi-level cache
Which of the following is a logical device interface used to access non-volatile memory storage devices attached via a PCIe? GDI NVMe SLI MAPI
NVMe
Which of the following are characteristics of the type of RAM most commonly used as the main system memory in desktop PCs? (Select 2 answers) SODIMM Non-ECC memory Static RAM MicroDIMM Dynamic RAM ECC memory
Non-ECC memory and Dynamic RAM
Which of the following is a valid SDRAM module combination that can be installed on a single PC motherboard? DDR2 + DDR DDR3 + DDR2 DDR4 + DDR3 Any of the above None of the above
None of the above
Due to size restrictions and the compact nature of laptop devices, this type of storage media has become less commonly found on new laptops. Flash drives Optical drives Solid-state drives Magnetic drives
Optical drives
Which of the following is the industry name used for DDR2-1066 modules? PC2-4200 PC2-5300 PC2-6400 PC2-8500
PC2-8500
Which of the following is the industry name of DDR3-1333 modules? PC3-6400 PC3-8500 PC3-10600 PC3-12800
PC3-10600
Certain types of RAM use an additional bit in order to detect whether a data error has occurred. This extra bit is used to store information about how many bits are set to a value of 1 in a given string of data (typically one byte). Examining the value of this additional bit at different stages of processing allows to detect whether the data has been corrupted. What is the name of this extra bit? Digest Archive bit Hash value Parity bit
Parity bit
Which of the following RAID levels does not offer fault tolerance? RAID 5 Disk duplexing RAID 0 Disk mirroring RAID 1
RAID 0
Which type of RAID creates a striped set from a series of mirrored drives? RAID 0+1 RAID 1 RAID 5 RAID 1+0
RAID 1+0
Examples of nested RAID levels include: (Select all that apply) RAID 0 RAID 1 RAID 1+0 RAID 5 RAID 10
RAID 1+0 and RAID 10
Which one of the following is a data storage solution that combines multiple disk drive components into a single logical unit to increase volume size, performance, or reliability? Load balancing Serial Attached SCSI (SAS) Aggregation switching Redundant Array of Independent Disks (RAID)
Redundant Array of Independent Disks (RAID)
Hardware RAID Level 1: (Select 3 answers) Requires at least 2 drives to implement Is also known as disk striping Offers improved performance in comparison to RAID 0 Offers improved reliability by creating identical data sets on each drive (failure of one drive does not destroy the array as each drive contains identical copy of the data) Is also referred to as disk mirroring
Requires at least 2 drives to implement, Offers improved reliability by creating identical data sets on each drive (failure of one drive does not destroy the array as each drive contains identical copy of the data) and Is also referred to as disk mirroring
Hardware RAID Level 5: (Select 2 answers) Requires at least 2 drives to implement Continues to operate in case of failure of more than 1 drive Requires at least 3 drives to implement Offers increased performance and fault tolerance (single drive failure does not destroy the array and lost data can be re-created by the remaining drives) Requires at least 4 drives to implement
Requires at least 3 drives to implement and Offers increased performance and fault tolerance (single drive failure does not destroy the array and lost data can be re-created by the remaining drives)
Platters of a magnetic hard drive spin at a rate measured in: Revolutions per second Iterations per minute Revolutions per minute Iterations per second
Revolutions per minute
Examples of mass storage device interfaces include: (Select all that apply) UTP SATA HDMI IDE/PATA STP SCSI
SATA, IDE/PATA and SCSI
Examples of flash memory card formats include: (Select all that apply) SD CompactFlash Micro-SD SSHD Mini-SD xD
SD, CompactFlash, Micro-SD, Mini-SD and xD
Which type of internal hard drive combines high performance and capacity at a relatively low device cost? SSD Flash drive Magnetic drive USB drive SSHD
SSHD
A Disk Defragmenter is a software tool used to rearrange data on magnetic drives in order to improve system performance. Defragmentation results in faster read/write operations of a magnetic hard drive's read/write heads because defragmentation consolidates data into the smallest contiguous regions. This means that the heads can access data sequentially without seeking data fragments in different areas of a disk. True False
True
An M.2 key is a notch on the pin contact surface of an M.2 expansion card which prevents insertion into an incompatible socket. The M.2 key IDs include 12 available letters from A to M. These letters correspond to the locations of notched pins on the card's contact surface and designate which interface the card is compatible with. M.2 expansion cards that are used for solid-state storage applications have key IDs of B and M. The B-keyed M.2 SSD cards use 2 PCIe lanes (lower read/write speed), while M-keyed M.2 SSDs use 4 PCIe lanes (higher read/write speed). M.2 SSDs with 2 notches on the card's pin contact surface (B + M) increase the card's compatibility as they can be installed in either of the two types of expansion slots on the motherboard. True False
True
Placing a notch on a RAM module contact surface allows the module to be properly aligned with a memory bank on the motherboard and prevents the installation of incompatible memory types. True False
True
Random Access Memory (RAM) is an example of volatile storage media. It requires a continuous flow of electricity to preserve its contents; therefore, all data stored in RAM lasts only while the power is on. True False
True
The term "Synchronous Dynamic Random-Access Memory (SDRAM)" encompasses a broad range of DRAM modules that rely on a signal sent by the system clock in order to synchronize the memory operation with other internal PC components. True False
True
When installing two PATA drives on a single cable, each drive must be configured with a jumper to designate it as either a primary drive (a.k.a. "master") or a secondary drive (a.k.a. "slave"). The "cable select" jumper setting option automatically configures the drive as master or slave according to its position on a cable. True False
True
Which of the following is an example of a hot-swappable drive? (Select all that apply) USB drive PATA drive IDE drive SATA drive eSATA drive
USB drive, SATA drive and eSATA drive
What are the storage limitations of a standard CD-ROM media format? (Select 2 answers) Up to 737 MB of data storage capacity Up to 80 minutes of uncompressed audio Up to 829 MB of data storage capacity Up to 90 minutes of uncompressed audio Up to 912 MB of data storage capacity Up to 99 minutes of uncompressed audio
Up to 737 MB of data storage capacity and Up to 80 minutes of uncompressed audio
Which of the following is a special-purpose memory type used by graphics controllers? UDIMM Registered memory SRAM MicroDIMM VRAM
VRAM
Which of the following are characteristics of Dynamic Random-Access Memory (DRAM)? (Select all that apply) Volatile storage media type Utilized for CPU cache memory chips More expensive in comparison to Static Random-Access Memory (SRAM) Non-volatile storage media type Slower than Static Random-Access Memory (SRAM) Widely used as system's primary storage media (regular RAM modules installed in memory slots on the motherboard) Faster than Static Random-Access Memory (SRAM) Less expensive in comparison to Static Random-Access Memory (SRAM)
Volatile storage media type Slower than Static Random-Access Memory (SRAM) Widely used as system's primary storage media (regular RAM modules installed in memory slots on the motherboard) Faster than Static Random-Access Memory (SRAM) Less expensive in comparison to Static Random-Access Memory (SRAM)
Which of the following is a proprietary flash memory card format used mainly in older digital cameras? xD SD SSD Mini-SD Micro-SD
xD