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
RAM is volatile memory, meaning it loses its contents when power is removed. The question incorrectly states RAM is 'UN Volatile' (non-volatile). Non-volatile memory like ROM, flash storage, or hard drives retains data without power. The 'In Currently Use' phrasing is also grammatically incorrect but doesn't change the core fact - RAM holds active programs and data but requires constant power to maintain them.
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ROM loses information when the computer is powered off.
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ROM chips can be plugged into the motherboard to provide more memory.
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ROM can't be written to , it's preprogrammed.
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None
C
Correct answer
Explanation
ROM is Read-Only Memory that cannot be written to after manufacture. It is preprogrammed with permanent instructions. Option A is false because ROM retains data without power. Option B is false because ROM is soldered or built-in, not plugged in like RAM.
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ROM
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RAM
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Hard disk
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Floppy disk
B
Correct answer
Explanation
RAM is volatile memory that requires constant power to maintain stored data. When power is lost, RAM contents are erased. ROM, hard disks, and floppy disks retain data without power.
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Magnetic card
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Memory card
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Smart card.
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Processor card.
C
Correct answer
Explanation
Smart cards contain both a processor chip and memory, allowing them to store and update information. Magnetic strips (magnetic cards) have no processor. Memory cards lack a processor. 'Processor card' is not the standard term.
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A floppy disk
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A hard disk
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A tap disk
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A zip disk
A
Correct answer
Explanation
Floppy disks are the slowest because they have low rotational speeds and old technology. Hard disks are much faster. Option C 'tap disk' is likely a typo for tape (sequential access) or an error, but floppies remain the slowest among common magnetic media.
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A floppy disk
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A zip disk
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A hard disk
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A magnetic tape drive.
C
Correct answer
Explanation
Hard disks have faster access times compared to other listed storage devices. They use spinning platters with read/write heads that can quickly access any data location, unlike sequential access devices like magnetic tape or slower removable media like floppy/zip disks.
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Global Assembly Cache
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Global Access Cache
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Guide Access Cache
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Global Alert Cache
A
Correct answer
Explanation
GAC stands for Global Assembly Cache, a .NET framework component that stores assemblies designated to be shared across multiple applications. It's a centralized repository for strongly-named .NET assemblies.
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Blu-ray
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CD
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DVD
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Floppy Diskette
A
Correct answer
Explanation
Blu-ray discs have the highest storage capacity among the options: standard single-layer Blu-ray holds 25GB, dual-layer holds 50GB. DVDs hold 4.7GB (single-layer) or 8.5GB (dual-layer). CDs hold 700MB. Floppy diskettes hold only 1.44MB. Blu-ray clearly has the most information capacity.
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3 MB private bytes, 5 MB page file
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5 MB private bytes, 3 MB page file
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0 private bytes, 8 MB page file
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Unlimited
A
Correct answer
Explanation
In IIS 7.0, each application pool has a baseline memory footprint of approximately 3 MB of private bytes and 5 MB of page file usage. This is the minimum memory overhead for a worker process before the actual application code even starts executing. Options B and C swap or zero out values incorrectly, while D is incorrect because application pools have fixed overhead costs.
A
Correct answer
Explanation
IIS application pools can have memory limits configured through several settings: 'Private Memory Limit' (kernel-mode limit on private bytes), 'Virtual Memory Limit' (limits virtual address space), and 'Request Memory Limit' (per-request memory threshold). When these limits are exceeded, IIS can recycle the worker process, take no action, or trigger other configurable responses. This prevents runaway processes from consuming all server memory.
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cache option specifies minimum value of the sequence
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cache option specifies how many sequence values will be stored in memory for faster access
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cache option specifies maximum value of the sequence
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cache option specifies the value with which the sequence will be incremented
B
Correct answer
Explanation
The CACHE option in database sequences preallocates and holds a specified number of sequence values in memory for faster access. It does not dictate increment values, nor does it specify minimum or maximum sequence boundaries.
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SP, BUSCO/SPM-FPGA and the SDRAM
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SP and the SDRAM
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None of the Above
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Both a and b can be correct
A
Correct answer
Explanation
For SPb3 and SPB31 boards, the SPM (Service Processor Module) is architecturally composed of the SP, the BUSCO/SPM-FPGA, and the SDRAM. Distractors omitting the FPGA interface or stating a and b are correct are incomplete.
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All SPM SDRAM tested
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The cache memory is enabled during all other tests and thus indirectly tested
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both a and b
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Ethernet communication controller
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both a and d
C
Correct answer
Explanation
For SPB21 and SPb3 boards, hardware tests at SPU and SPM restart cover testing all SPM SDRAM, and the cache memory is enabled during other tests to be tested indirectly. Thus, 'both a and b' is correct, whereas the Ethernet controller test is not the primary combined option.
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buffer cache
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library cache
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data dictionary cache
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none of the above
B
Correct answer
Explanation
The library cache, a component of the Shared Pool, stores parsed SQL statements, execution plans, and PL/SQL code. Reusing these cached objects eliminates parsing overhead, reducing query processing time.
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Shared Preferences
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Internal Storage
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External Storage
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SQLite Databases
A,B,C,D
Correct answer
Explanation
Android provides multiple data storage options: SharedPreferences for key-value pairs, Internal Storage for private app data, External Storage for shared files, and SQLite databases for structured data. All four are valid, commonly-used storage mechanisms in Android applications.