Computer Memory & Memory Organization Questions with Solutions
Computer memory stores data and instructions. This topic covers the memory hierarchy, from registers and cache memory to main memory (RAM and ROM) and secondary storage (hard disks, SSDs, optical discs and flash drives). It also covers types of RAM (SRAM and DRAM), types of ROM (PROM, EPROM and EEPROM), virtual memory, and units of memory from bits and bytes to kilobytes, megabytes, gigabytes and terabytes. Exam questions test the differences between volatile and non-volatile memory, which memory is fastest or largest, memory unit conversions, and the role of cache memory. Remember that moving up the memory hierarchy makes memory faster and costlier per bit but smaller in capacity. RAM is volatile and loses its contents when power is switched off, while ROM keeps its contents. Practise the computer memory questions below. Each answer comes with a short explanation.
- Q61.
The capacity of a memory unit is defined by the number of words multiplied by the number of bits per word. How many separate address and data lines are needed for a memory of ?
A. 10 address lines and 16 data linesB. 12 address lines and 10 data linesC. 12 address lines and 16 data linesD. 12 address lines and 8 data lineseasyAsked in NIMCET 2008View solution › - Q62.
The main disadvantage of direct mapping of cache organisation is that
A. it does not allow simultaneous access to the intended data and its tagB. it is more expensive than other types of organisationC. the cache hit ratio is degraded if two or more blocks used alternately map onto the same block frame in the cacheD. the number of blocks required for the cache increases linearly with the size of the main memorymediumAsked in NIMCET 2008View solution › - Q63.
Which memory is directly accessed by the CPU during program execution?
A. Secondary MemoryB. RAM (Random Access Memory)C. Optical StorageD. Magnetic TapeeasyAsked in MAH LLB 3 Year CET 2026View solution › - Q64.
The memory unit which directly communicates with the CPU is known as
A. Primary MemoryB. Secondary MemoryC. Shared MemoryD. Auxiliary MemoryeasyAsked in NIMCET 2020View solution › - Q65.
Dynamic RAM consumes……. Power and ……than Static RAM
A. More, FasterB. More, SlowerC. Less, SlowerD. Less, FastermediumAsked in NIMCET 2020View solution › - Q66.
One Exabyte is equal to …
A. bytesB. 1 Zetta Bytes divided (/) by one thousandC. 1 Peta Bytes multiplied (×) by one thousandD. All of the aboveeasyAsked in NIMCET 2020View solution › - Q67.
One TeraByte (TB) = ________ GB and One ExaByte (EB) = ________ GB
A. GB, GBB. GB, GBC. GB, GBD. GB, GBeasyAsked in NIMCET 2021View solution › - Q68.
The cache memory is more effective because of
A. Memory localizationB. Locality of referenceC. Memory SizeD. None of the mentionedeasyAsked in NIMCET 2021View solution › - Q69.
Which of the following is the fastest means of memory access for CPU?
A. RegistersB. CacheC. Main MemoryD. StackeasyAsked in NIMCET 2021View solution › - Q70.
FFFF will be the last memory location in a memory of size
A. 1KB. 64KC. 32KD. 16KeasyAsked in NIMCET 2022View solution › - Q71.
Cache memory functions as an intermediary between
A. CPU and hard diskB. None of theseC. CPU and RAMD. RAM and ROMeasyAsked in NIMCET 2024View solution › - Q72.
The primary purpose of cache memory in a computer system is
A. to temporarily store frequently accessed data and instructions for faster access by the CPU.B. to permanently store data and programs.C. to provide additional storage space when the main memory is full.D. to manage input and output operations between the CPU and peripherals.easyAsked in NIMCET 2024View solution › - Q73.
Which of the following is the smallest unit of data in a computer?
A. BitB. ByteC. KBD. NibbleeasyAsked in NIMCET 2024View solution › - Q74.
A computer system has a 16-bit wide address/data bus that uses RAM chips of 4K 8-bit capacity. The number of RAM chips needed to provide a memory capacity of 64 Kbytes is
A. 32B. 16C. 64D. 8easyAsked in NIMCET 2024View solution › - Q75.
Which of the following is correct?
A. P, Q, and S are true; R is false.B. Only P and Q are true; R is false, and S is irrelevant.C. All statements P, Q, R, and S are true.D. P and S are true; Q and R are false.easyAsked in NIMCET 2025View solution › - Q76.
Which of the following secondary storage devices has the fastest access time: Optical Drive, Magnetic Tape Drive, Hard Disk Drive (HDD), Solid State Drive (SSD)?
A. Solid State Drive (SSD)B. Optical DriveC. Magnetic Tape DriveD. Hard Disk Drive (HDD)easyAsked in NIMCET 2025View solution › - Q77.
In computer architecture, which of the following correctly matches the fundamental unit used in the CPU, cache, and main memory respectively?
A. CPU Block, Cache Page, Memory WordB. CPU Block, Cache Word, Memory PageC. CPU Page, Cache Word, Memory BlockD. CPU Word, Cache Block, Memory PageeasyAsked in NIMCET 2025View solution ›