CompTIA A+ 220-801 Memory Questions
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Comptia A+ 220-801 Memory questions
Questions and Answers
- 1.
How many pins does a DDR1 desktop memory module have?
- A.
184
- B.
168
- C.
200
- D.
240
Correct Answer
A. 184Explanation
A DDR1 desktop memory module has 184 pins.Rate this question:
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- 2.
How many pins do DDR2 and DDR3 memory modules have?
- A.
72
- B.
240
- C.
144
- D.
184
Correct Answer
B. 240Explanation
DDR2 and DDR3 memory modules have 240 pins. The number of pins on a memory module determines the type and compatibility of the memory with the motherboard. DDR2 and DDR3 modules both have 240 pins, which means they are not interchangeable. This information is important when selecting and installing memory modules to ensure compatibility with the motherboard.Rate this question:
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- 3.
How many pins does a RAMBUS or RIMM memory module have?
- A.
240
- B.
72
- C.
168
- D.
184
Correct Answer
D. 184Explanation
A RAMBUS or RIMM memory module typically has 184 pins.Rate this question:
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- 4.
ECC stands for?
- A.
Error Correcting Code
- B.
Edit Correcting Chip
- C.
Eraseable Correcting Code
- D.
Equal Correcting Communication
Correct Answer
A. Error Correcting CodeExplanation
ECC stands for Error Correcting Code. This term refers to a coding technique used in computer systems to detect and correct errors that occur during data transmission or storage. By adding extra bits to the transmitted data, ECC allows the receiver to identify and fix errors, ensuring data integrity. This is particularly important in critical applications where even minor errors can have significant consequences, such as in memory systems or communication protocols.Rate this question:
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- 5.
Laptop memory modules come in which sizes?
- A.
72
- B.
144
- C.
200
- D.
204
- E.
68
- F.
168
Correct Answer(s)
A. 72
B. 144
C. 200
D. 204Explanation
Laptop memory modules come in various sizes, including 72, 144, 200, and 204. These numbers represent the number of pins on the memory module. Different laptops require different sizes of memory modules, so it is important to choose the correct size when upgrading or replacing memory in a laptop. The other options, 68 and 168, are not mentioned as common sizes for laptop memory modules.Rate this question:
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- 6.
A DDR memory moedule has a Clock Speed of 100 Mhz What is the PC Speed rating?
- A.
PC800
- B.
PC1600
- C.
PC2400
- D.
PC4800
Correct Answer
B. PC1600Explanation
The PC Speed rating is determined by the clock speed of the DDR memory module. In this case, the clock speed is 100 MHz. The PC Speed rating is calculated by multiplying the clock speed by 8, so 100 MHz * 8 = 800. The PC Speed rating is then rounded to the nearest hundred, resulting in PC800. Therefore, the correct answer is PC800.Rate this question:
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- 7.
A DDR2 memory module has a DDR2 Speed Rating of DDR2-1000 what is the Core RAM Clock Speed?
- A.
250
- B.
500
- C.
800
- D.
8000
Correct Answer
A. 250Explanation
The DDR2 Speed Rating of DDR2-1000 indicates that the memory module can transfer data at a rate of 1000 million transfers per second. The Core RAM Clock Speed, on the other hand, refers to the speed at which the memory module's internal clock operates. In the case of this question, the Core RAM Clock Speed would be one-fourth (or 25%) of the DDR2 Speed Rating, resulting in a clock speed of 250 million cycles per second.Rate this question:
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- 8.
A DD3 memory module has a DDR I/O Speed of 800 MHz what is the PC Speed rating?
- A.
PC3-12800
- B.
PC3-6400
- C.
PC3-17000
- D.
PC3-10667
Correct Answer
A. PC3-12800Explanation
The PC Speed rating for a DD3 memory module with a DDR I/O Speed of 800 MHz is PC3-12800. This rating is derived by dividing the I/O Speed by 8, resulting in a data transfer rate of 10000 MB/s. The PC3-12800 rating represents a peak transfer rate of 12800 MB/s, which corresponds to the module's maximum bandwidth.Rate this question:
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- 9.
CAS stands for what?
- A.
Column Array Strobe
- B.
Computer Access System
- C.
Column Access Strobe
- D.
Chassis Array Station
Correct Answer
A. Column Array StrobeExplanation
CAS stands for Column Access Strobe. This term is commonly used in computer memory systems, particularly in dynamic random-access memory (DRAM). The CAS signal is a control signal that is used to synchronize the memory controller with the memory module, specifically for accessing a specific column of data in the memory array. The CAS signal helps in coordinating the timing and sequencing of the memory read or write operation, ensuring that the correct data is accessed from the desired memory location. Therefore, the correct answer is Column Access Strobe.Rate this question:
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- 10.
Do DDR2 memory modules fit into DD3 memory slots?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
DDR2 memory modules do not fit into DDR3 memory slots because they have different physical designs and pin configurations. DDR2 modules have 240 pins, while DDR3 modules have 240 or 204 pins, depending on the type. Additionally, DDR2 and DDR3 modules have different notches on the connectors, preventing them from being inserted into the wrong type of slot. Therefore, DDR2 memory modules are not compatible with DDR3 memory slots.Rate this question:
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- 11.
SIMM stands for?
- A.
Synchronous Inline Memory Module
- B.
Super Incredible Memory Module
- C.
Standard Inline Memory Module
- D.
Single Inline Memory Module
Correct Answer
D. Single Inline Memory ModuleExplanation
SIMM stands for Single Inline Memory Module. This type of memory module was commonly used in older computer systems. It consists of a single row of memory chips that are soldered onto a circuit board. The SIMM module is inserted into a memory slot on the computer's motherboard. It is called "single inline" because all of the memory chips are arranged in a single row, rather than being spread out across multiple rows. SIMM modules have been largely replaced by newer technologies such as DIMM (Dual Inline Memory Module) and SODIMM (Small Outline Dual Inline Memory Module).Rate this question:
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- 12.
CRIMMs are used with what technology?
- A.
DDR to add speed to the RAM
- B.
RDRAM to terminate
- C.
Synching the RDRAM to the CPU
- D.
To enable quadruple channel memory
Correct Answer
B. RDRAM to terminateExplanation
CRIMMs (Continuity RIMMs) are used with RDRAM (Rambus Dynamic Random Access Memory) technology to terminate the memory bus. RDRAM requires CRIMMs to be installed in empty memory slots to ensure proper termination of the bus, preventing signal reflections and maintaining signal integrity. Therefore, the correct answer is "RDRAM to terminate."Rate this question:
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- 13.
DIMM stands for?
- A.
Dynamic Inline Memory Module?
- B.
Data Inline Memory Module
- C.
Dull Inline Mammory Module
- D.
Dual Inline Memory Module
Correct Answer
D. Dual Inline Memory ModuleExplanation
DIMM stands for Dual Inline Memory Module. This is a type of computer memory module that is used in desktop computers and servers. It is a circuit board that contains memory chips and connects to the computer's motherboard. The term "dual inline" refers to the fact that the module has two sets of electrical contacts on each side, allowing it to be plugged into the motherboard. DIMMs are commonly used for RAM (Random Access Memory) in computers, providing a high-speed data storage and retrieval solution.Rate this question:
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- 14.
The technology to detect memory automatically in the motherboard is called?
- A.
MMC Memory Matching Capability
- B.
SPD Serial Presence Detect
- C.
SPD Single Presence Detect
- D.
MMC Memory Matching Consistency
Correct Answer
B. SPD Serial Presence DetectExplanation
The technology to detect memory automatically in the motherboard is called SPD (Serial Presence Detect). This technology allows the motherboard to identify and configure the memory modules installed in the system without manual intervention. It provides information about the memory module's capacity, speed, timings, and voltage requirements, allowing the motherboard to optimize its settings accordingly. This ensures compatibility and optimal performance of the memory modules in the system.Rate this question:
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Mar 22, 2023Quiz Edited by
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Jan 06, 2013Quiz Created by
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