Computer Knowledge
Computer Memory and Storage
2,477 Questions
Computer memory and storage questions test foundational knowledge of hardware, cache mapping, and data transfer mechanisms. Key areas include Direct Memory Access, analog recording, and RAID levels. This section is essential for candidates preparing for banking and government computer proficiency tests.
Cache memory mappingDirect memory accessRAID storage levelsHard disk technologyOptical media storageMemory addresses
Computer Memory and Storage Questions
B
Correct answer
Explanation
Optical disks, such as CDs and DVDs, store data along a single continuous track that winds from the center outward in a spiral shape.
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primary
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secondary
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main
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none of these
B
Correct answer
Explanation
Magnetic tape is a sequential access medium used primarily for backups and archiving, classifying it as a secondary storage device.
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memory
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magnetic
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optical
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none of these
C
Correct answer
Explanation
CD-ROM (Compact Disc Read-Only Memory) uses optical technology, where a laser reads data from the disk surface.
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one sector
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two sectors
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two or more sectors
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none of these
C
Correct answer
Explanation
In disk storage, a block of data is typically larger than a single physical sector, so it is stored across two or more sectors to accommodate the data size.
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Terabyte
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Gigabyte
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Kilobyte
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Megabyte
C
Correct answer
Explanation
The order of memory sizes from smallest to largest is: Kilobyte, Megabyte, Gigabyte, Terabyte. Therefore, Kilobyte is the smallest.
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Time required to locate and retrieve stored data
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Time required to locate the lost data
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Time required to delete specific data on a certain memory location
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None of the above
A
Correct answer
Explanation
Access time is the time interval between the request for data and the moment the data is actually available for use.
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DDR SDRAM
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SDRAM
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FPM DRAM
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RDRAM
B
Correct answer
Explanation
SDRAM (Synchronous DRAM) is designed to synchronize with the system clock, allowing it to manage memory access more efficiently than older asynchronous DRAM types.
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Flash memory
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PROM
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EEPROM
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EPROM
D
Correct answer
Explanation
EPROM (Erasable Programmable Read-Only Memory) can be erased by exposing the chip to strong ultraviolet light through a quartz window.
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PROM
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Flash memory
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EAROM
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EEPROM
D
Correct answer
Explanation
EEPROM (Electrically Erasable Programmable Read-Only Memory) allows individual bytes to be erased and rewritten using an electric field, without needing to remove the chip.
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Cache memory
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RAM
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Hard disk
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Flash memory
A
Correct answer
Explanation
Cache memory is a small, high-speed memory located close to or inside the processor, making it the most accessible memory for the CPU.
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SDRAM
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Cache memory
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Read only Memory
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Hard disk
B
Correct answer
Explanation
Cache memory is integrated directly into or very near the CPU to provide extremely fast access times. Because of this speed and the specialized manufacturing process required, it has the highest cost per bit compared to main memory or secondary storage.
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FPM DRAM
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EDO DRAM
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VRAM
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DDR SDRAM
C
Correct answer
Explanation
VRAM (Video RAM) is a specialized type of DRAM designed specifically for graphics adapters, featuring dual-port access that allows the processor to write data while the display controller reads it simultaneously.
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breaking the slider
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positioning the slider to cover the hole
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positioning the slider away from the hole
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a floppy cannot be write protected
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Floppy Disk
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Optical Disk
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Hard Disk
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Half-inch Tape Cartridge
B
Correct answer
Explanation
Optical disks, such as CDs and DVDs, store data along a single continuous spiral track that starts from the center and moves outward, unlike the concentric circular tracks used in hard and floppy disks.
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internal processor memory
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primary memory
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external storage memory
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non-volatile memory
B
Correct answer
Explanation
Dynamic RAM (DRAM) is used as the primary memory (main memory) in computers because it is volatile and provides fast access for the CPU to execute programs.