Core 1: RAM

Question 1

Which of the following memory module form factors are used in laptop computers? (Select 2 answers)

• SODIMM
• ECC RAM
• DIMM
• MicroDIMM
• C-RIMM

Answer 1

• SODIMM

- MicroDIMM

Question 2

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 or False?

Answer 2

True

Question 3

Which type of memory allows for permanent data storage?

• VRAM
• DVD-RAM
• Static RAM
• Buffered memory
• DRAM

Answer 3

DVD-RAM

Question 4

Which of the following is a special-purpose memory type used by graphics controllers?

• UDIMM
• Registered memory
• SRAM
• MicroDIMM
• VRAM

Answer 4

VRAM

Question 5

A Small Outline Dual In-Line Memory Module (SODIMM) is a more compact type of computer memory designed for desktop PCs.

True or False?

Answer 5

True

Question 6

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)

Answer 6

• 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 chips

Question 7

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)

Answer 7

• 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)
• Less expensive in comparison to Static Random-Access Memory (SRAM)

Question 8

SDRAM’s backward compatibility feature provides a convenient way to build PCs utilizing different types of SDRAM modules.

True or False?

Answer 8

False

Question 9

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

Answer 9

None of the above

Question 10

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

Answer 10

None of the above

Question 11

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

Answer 11

• 1 notch on the module contact surface
• Reads/writes 4 words of data per clock cycle
• 240 contact pins

Question 12

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

Answer 12

• 1 notch on the module contact surface
• Reads/writes 4 words of data per clock cycle
• 240 contact pins

Question 13

Which of the following is the industry name used for DDR2-1066 modules?

• PC2-4200
• PC2-5300
• PC2-6400
• PC2-8500

Answer 13

PC2-8500

Question 14

What is the peak transfer rate of a DDR2-533 module?

• 3200 MB/s
• 4266 MB/s
• 5333 MB/s
• 6400 MB/s

Answer 14

4266 MB/s

Question 15

DDR2 SDRAM SODIMM memory modules contain:

• 200 contact pins
• 204 contact pins
• 240 contact pins
• 260 contact pins

Answer 15

200 contact pins

Question 16

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

Answer 16

• 1 notch on the module contact surface
• 240 contact pins
• Reads/writes 8 words of data per clock cycle

Question 17

Which of the following is the industry name of DDR3-1333 modules?

• PC3-6400
• PC3-8500
• PC3-10600
• PC3-12800

Answer 17

PC3-10600

Question 18

What is the peak transfer rate of a DDR3-1600 module?

• 6400 MB/s
• 8533 MB/s
• 10667 MB/s
• 12800 MB/s

Answer 18

12800 MB/s

Question 19

How many contact pins are used in SODIMM DDR3 SDRAM modules?

• 200
• 204
• 240
• 260

Answer 19

204

Question 20

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

Answer 20

• 1 notch on the module contact surface
• Reads/writes 8 words of data per clock cycle
• 288 contact pins

Question 21

DDR4-2666 is also known as:

• PC4-17000
• PC4-19200
• PC4-21300
• PC4-25600

Answer 21

PC4-21300

Question 22

What is the peak transfer rate of a DDR4-3200 module?

• 19200 MB/s
• 21333 MB/s
• 23466 MB/s
• 25600 MB/s

Answer 22

25600 MB/s

Question 23

How many contact pins are used in SODIMM DDR4 SDRAM modules?

• 200
• 204
• 240
• 260

Answer 23

260

Question 24

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

Answer 24

• Installing memory modules of matching types
• Installing memory modules of matching speeds
• Installing memory modules of the same capacity
• Installing modules in appropriate memory slots (slots of matching color) on the motherboard

Question 25

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

Answer 25

• Installing memory modules of matching types
• Installing memory modules of matching speeds
• Installing memory modules of the same capacity
• Installing modules in appropriate memory slots (slots of matching color) on the motherboard

Question 26

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

Answer 26

Can detect and correct errors

Question 27

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

Answer 27

Parity bit

Question 28

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

Answer 28

Non-ECC memory

Dynamic RAM

Question 29

Which memory type can provide a CPU with the fastest access to frequently used data?

• DRAM
• Secondary storage
• Flash memory
• Multi-level cache

Answer 29

Multi-level cache