NIMCET Computer Memory Back-up Devices Previous Year Question Paper and Solution with PDF

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NIMCET Computer Memory Back-up Devices PYQ

Qus : 1NIMCET PYQ

One TeraByte(TB)=_________GB and One ExaByte(EB)=_______GB

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Solution

Unit	Shortened	Capacity
Bit	b	1 or 0 (on or off)
Byte	B	8 bits
Kilobyte	KB	1024 bytes
Megabyte	MB	1024 kilobytes
Gigabyte	GB	1024 megabytes
Terabyte	TB	1024 gigabytes
Petabyte	PB	1024 terabytes
Exabyte	EB	1024 petabytes
Zettabyte	ZB	1024 exabytes
Yottabyte	YB	1024 zettabytes

Qus : 2NIMCET PYQ

Which of the following is the fastest means of memory access for CPU?

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Solution

Registers are a type of computer memory used to quickly accept, store, and transfer data and instructions that are being used immediately by the CPU. The registers used by the CPU are often termed as Processor registers.

Qus : 3NIMCET PYQ

Let the memory access time is 10 miliseconds and cache hit ratio 15%. The effective memory access time is

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Qus : 4NIMCET PYQ

Dynamic RAM consumes……. Power and ……than Static RAM

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Qus : 5NIMCET PYQ

A wrong sentence related to FAT 32 and NTFS file systems is

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Qus : 6NIMCET PYQ

What is the name of the storage device that compensates the difference in rates of flow of data from one device to another?

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Solution

Data Flow Management

Question:
What is the name of the storage device that compensates the difference in rates of flow of data from one device to another?

✅ Correct Answer: Buffer

Explanation:

A Buffer is a temporary storage area that helps in matching the speed of data transfer between a fast and a slow device, ensuring smooth data flow without loss.

Final Answer: Buffer

Qus : 7NIMCET PYQ

How many 32K $\times$ 1 RAM chips are needed to provide a memory capacity of 256K bytes?

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Solution

Quick Solution

Each RAM chip: 32K × 1 = 32K bits = 4 KB

Total required: 256 KB

Number of chips needed: 256 ÷ 4 = 64

✅ Final Answer: 64 chips

Qus : 8NIMCET PYQ

Which of the following interfaces perform the transfer of data between the memory and the I/O peripheral without involving the CPU?

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Solution

Data Transfer Interface in Computer Systems

Question: Which interface transfers data between memory and I/O peripheral without CPU involvement?

✅ Correct Answer: Direct Memory Access (DMA)

Why DMA?

The CPU only initiates the process.
The DMA controller directly transfers data between I/O and memory.
Frees the CPU for other tasks, improving efficiency.

❌ Incorrect Options (if any): Programmed I/O, Interrupt-driven I/O – both require CPU involvement.

Qus : 9NIMCET PYQ

Cache memory functions as an intermediary between

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Solution

Computer Architecture: Role of Cache Memory

Question: Cache memory functions as an intermediary between?

✅ Correct Answer: CPU and Main Memory (RAM)

Explanation:

CPU is very fast, but RAM is slower in comparison.
Cache memory holds frequently accessed data closer to the CPU.
This reduces data access time and improves overall system performance.

Hierarchy: CPU ↔ Cache ↔ Main Memory (RAM) ↔ Secondary Storage

Qus : 10NIMCET PYQ

The primary purpose of cache memory in a computer system is

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Solution

Computer Architecture: Purpose of Cache Memory

Question: What is the primary purpose of cache memory in a computer system?

✅ Correct Answer: To increase the speed of data access by storing frequently used data closer to the CPU

Explanation:

Cache memory is much faster than main memory (RAM).
It holds frequently accessed data and instructions.
Helps reduce CPU waiting time and improves performance.

Hierarchy: CPU → Cache → RAM → Storage

Qus : 11NIMCET PYQ

Which of the following is the smallest unit of data in a computer ?

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Solution

Basic Computer Knowledge: Smallest Unit of Data

Question: Which of the following is the smallest unit of data in a computer?

✅ Correct Answer: Bit (Binary Digit)

Explanation:

A bit is the most fundamental unit of data in computing.
It represents a binary value: 0 or 1.
All other units (Byte, Kilobyte, etc.) are multiples of bits.

Common Units of Data:

1 Bit = Smallest unit
1 Byte = 8 Bits
1 Kilobyte (KB) = 1024 Bytes
1 Megabyte (MB) = 1024 KB

? Note: Every piece of data in a computer—from text and images to video and sound—ultimately breaks down into bits.

Qus : 12NIMCET PYQ

A computer system has 16-bit wide address/ data bus that uses RAM chips of 4K $\times$ 8-bit capacity. The number of RAM chips are needed to provide a memory capacity of 64 Kbytes memory is

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Solution

Memory Chip Calculation

Given:

RAM chip size = 4K × 8-bit = 4096 bytes = 4 KB
Required memory = 64 KB = 65536 bytes

Calculation:

Total chips needed = 65536 / 4096 = 16 chips

✅ Final Answer: 16 RAM chips are needed to build 64 KB of memory.

Qus : 13NIMCET PYQ

Which of the following components is used to establish a communication link between a CPU and the peripheral devices to transfer data?

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Qus : 14NIMCET PYQ

Consider a hard disk with 16 recording surfaces (0 – 15) having 16384 cylinders (0 – 16383) and each cylinder contains 64 sectors (0 – 63). Data storage capacity in each sector is 512 bytes. Data are organized stored in the disk and the starting disk location of the file is < 1200, 9, 40>. What is the cylinder number of the last sector of the file, if it is stored in a contiguous manner?

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Qus : 15NIMCET PYQ

A hard disk has a rotational speed of 6000 rpm. Its average latency time is

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NIMCET Previous Year Questions (PYQs)

NIMCET Computer Memory Back-up Devices PYQ

Solution

Solution

Solution

Solution

Solution

Solution

Data Flow Management

Explanation:

Solution

Quick Solution

Solution

Data Transfer Interface in Computer Systems

Solution

Computer Architecture: Role of Cache Memory

Solution

Computer Architecture: Purpose of Cache Memory

Solution

Basic Computer Knowledge: Smallest Unit of Data

Solution

Memory Chip Calculation

Solution

Solution

Solution

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