Computer Knowledge
Computer Memory and Storage
2,121 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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Hard disk
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Compact disk
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RAM
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CPU
B
Correct answer
Explanation
The Memory Data Register (MDR) is the register in a computer's processor that stores the data being transferred to and from the immediate access store.
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to free memory space
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to allocate memory space
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both of the above
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none of the above
B
Correct answer
Explanation
The calloc function stands for 'contiguous allocation' and is used to allocate memory space for an array of elements, initializing them to zero.
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CPU
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Monitor
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USER
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All the above
A
Correct answer
Explanation
The CPU (Central Processing Unit) requires primary memory (RAM) to store the instructions and data it is currently processing. Other options like Monitor or User do not directly utilize primary memory in this context.
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small
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big
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medium
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all the above
A
Correct answer
Explanation
Cache memory is a small, high-speed memory located close to or inside the CPU to store frequently accessed data, significantly improving overall system performance.
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input/output port
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instruction cycle
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CPU
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stack pointer
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none of these
D
Correct answer
Explanation
The CPU address register called stack pointer automatically keeps track of the stack entry point.
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Flash
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Flange
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Fury
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FRAM
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ROM
A
Correct answer
Explanation
It is commonly used in MP3 players, computer BIOS code and thumb drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles), so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk), it is an excellent choice for storing the operating code for small personal electronics like PDAs, cellphones, digital cameras and the data in items like MP3 players.
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Video Home System
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Very High Speed
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Video Horizontal Standard
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Voltage House Standard
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None of these
A
Correct answer
Explanation
JVC (Japan Victor Corporation) and Matsushita (Panasonic) developed the VHS format to compete with Sony which developed the Beta format as the first home video cassette recorder. VHS originally stood for Vertical Helical Scan, but now means Video Home System.
B
Correct answer
Explanation
Accessing data on a tape is sequential, meaning you must pass through previous items to reach a specific one, similar to a queue.
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RAID level 0
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RAID level 1
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RAID level 4
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RAID level 2
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RAID level 3
C
Correct answer
Explanation
This level of RAID technology in memory management consist of block-interleaved parity organisation that stores blocks just like in regular disks without stripping them across disks.
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CDs of historical places
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CDs of science experiments
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CDs of animals
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CDs of music
B
Correct answer
Explanation
Science experiment CDs provide visual demonstrations of complex concepts that are often difficult to perform in a classroom. This makes them highly useful for student learning.
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Hard Disk
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Main Memory
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Registers
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None of these
C
Correct answer
Explanation
Registers are the fastest type of memory in a computer system, located directly inside the CPU to provide immediate access to data for processing. Hard disks are secondary storage, and main memory (RAM) is slower and external to the processor core.
B
Correct answer
Explanation
Computer storage media is generally categorized into three types: primary storage (RAM/ROM), secondary storage (HDD/SSD/Optical), and tertiary storage (tape libraries).
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matrix scanning
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raster scan
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optical recording
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coding
C
Correct answer
Explanation
Optical recording technology uses laser beams to burn microscopic pits.
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Main memory
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Auxiliary memory
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Cache
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ROM
C
Correct answer
Explanation
It is a high speed memory called as static RAM required to hold most recently used data.