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
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direct access device
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printer
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keyboard
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punched card
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None of these
A
Correct answer
Explanation
Correct Answer: direct access device
A direct-access storage device (DASD) is a secondary storage device in which "each physical record has a discrete location and a unique address." Disk drives, magnetic drums, data cells and optical disc drives are all classified as DASDs.
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the hard disk
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cache memory
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RAM
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registers
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None of these
B
Correct answer
Explanation
Cache memory is a small, high-speed type of volatile computer memory that provides high-speed data access to the processor and stores frequently used computer programs and data.
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Works best with medium to large partitions
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Allows many portions of single program to use memory simultaneously
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Allows the overlaying of the programs
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All of the above
D
Correct answer
Explanation
Swapping can have a deal with overlaying.
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Memory
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Processes
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Disks and I/O devices
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All of the above
D
Correct answer
Explanation
An OS manages memory processes as well as hardware components such as disk and I/O devices.
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Floppy Disk
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Hard Disk
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CD ROM
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Zip Disk
B
Correct answer
Explanation
A hard disk is comparatively cheap in cost and has capacity to store large amounts of data.
A
Correct answer
Explanation
In a typical computer operation, RAM is used as almost all data is passed through OS for fast retrieval.
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Transfer rate
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Average seek time
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Latency
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Roundtrip time
B
Correct answer
Explanation
Average seek time is the time required to by read head of disk to move from one cylinder of HDD to another.
B
Correct answer
Explanation
DIMMs need to be refreshed in order to retain the content with regular interval.
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Floppy disk
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Hard disk
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Magnetic tapes
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CDROM
C
Correct answer
Explanation
Magnetic tapes are mounted on reels. Tapes need to move on reels in order to access particular memory locations on it.
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Cache memories are bigger than RAM.
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Cache memories are smaller than RAM.
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ROM are faster than RAM.
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Information in ROM can be written by users.
B
Correct answer
Explanation
Cache memories are smaller than RAM, as most of the time the data is retrieved from RAM itself. RAM is comparatively faster than ROM in terms of data retrieval.
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Semiconductor memories
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Magnetic tapes
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Magnetic disks
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Compact disks
A
Correct answer
Explanation
Semiconductor memories have fastest access time because they contain data in terms of bits and return directly to binary values. Hence, they are used for registers.
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the secondary access path
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a physical record key
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an inverted index
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all of the above
A
Correct answer
Explanation
Embedded pointers are used in database systems to link records, effectively providing a secondary access path to data beyond the primary key.
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inverted organization
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regular organization
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multi-list organization
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hashed organization
D
Correct answer
Explanation
Hashed organization uses a mathematical function (hash function) to map keys directly to storage locations, providing very fast direct access to records.
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Index addressing
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Indirect addressing
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Auto increment
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Auto decrement
D
Correct answer
Explanation
In auto-decrement addressing, the register is decremented before its value is used as the address for the operand.
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a single program is processed by two or more CPU's
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two or more programs are stored concurrently in primary storage
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only active pages of a program are stored in primary storage
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inter-program interference may occur