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WorksheetsCompTIA A+ 220 Core 1 (RAM)
Total questions: 21
Worksheet time: 11mins
Which type of memory allows for permanent data storage?
VRAM
DVD-RAM
Static RAM
Buffered memory
DRAM
Which of the following are characteristic features of Static Random-Access Memory (SRAM)? (Select all that apply)
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)
Utilized for CPU cache memory chips
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
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)
Less expensive in comparison to Static Random-Access Memory (SRAM)
SDRAM's backward compatibility feature provides a convenient way to build PCs utilizing different types of SDRAM modules.
True
False
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
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
Which of the following is the industry name used for DDR2-1066 modules?
PC2-4200
PC2-5300
PC2-6400
PC2-8500
What is the peak transfer rate of a DDR2-533 module?
3200 MB/s
4266 MB/s
5333 MB/s
6400 MB/s
DDR2 SDRAM SODIMM memory modules contain:
200 contact pins
204 contact pins
240 contact pins
260 contact pins
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
240 contact pins
Reads/writes 8 words of data per clock cycle
Which of the following is the industry name of DDR3-1333 modules?
PC3-6400
PC3-8500
PC3-10600
PC3-12800
What is the peak transfer rate of a DDR3-1600 module?
6400 MB/s
8533 MB/s
10667 MB/s
12800 MB/s
How many contact pins are used in SODIMM DDR3 SDRAM modules?
200
204
240
260
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
288 contact pins
Reads/writes 16 words of data per clock cycle
DDR4-2666 is also known as:
PC4-17000
PC4-19200
PC4-21300
PC4-25600
What is the peak transfer rate of a DDR4-3200 module?
19200 MB/s
21333 MB/s
23466 MB/s
25600 MB/s
How many contact pins are used in SODIMM DDR4 SDRAM modules?
200
204
240
260
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
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
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
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
Static RAM
MicroDIMM
Dynamic RAM
Non-ECC memory
