NIMCET Computer Previous Year Questions (PYQs) – Page 1 of 23
Study Stuff for MCA Examinations
Solution
Formula: Number of Boolean functions of $n$ variables is:
$ 2^{2^n} $
Condition: We are told the total functions must be ≤ 4:
\[ 2^{2^n} \leq 4 \]
✅ Try values of $n$:
- $n = 0$: $2^{2^0} = 2^1 = 2$ ✅
- $n = 1$: $2^{2^1} = 2^2 = 4$ ✅
- $n = 2$: $2^{2^2} = 2^4 = 16$ ❌
Minimum $n$ for which number of Boolean functions ≤ 4 is:
\[ \boxed{1} \]
✅ Final Answer: $\boxed{1}$
Solution
Solution
✅ Concept:
In modern processors, to improve performance, the CPU often overlaps the fetch, decode, and execute stages of multiple instructions. This overlapping is known as:
Instruction Pipelining
✅ Example:
- Instruction 1: Being executed
- Instruction 2: Being decoded
- Instruction 3: Being fetched
This overlapping allows multiple instructions to be processed simultaneously at different stages of the pipeline, improving throughput.
✅ Final Answer: $\boxed{\text{Instruction Pipelining}}$
| Entry | Description |
| I. Solid State Drive | A. Volatile main memory that holds data currently in use by the OS and applications |
| II. Cache Memory | B. Long-term, non-volatile storage used for the operating system and large files |
| III. Random Access Memory $($RAM$)$ | C. Fastest and smallest storage available for processor computations |
| IV. CPU Registers | D. High-speed buffer memory between the CPU and RAM that holds frequently accessed data |
Solution
Solid State Drive is used for long-term, non-volatile storage.
So,
I $\to$ B
Cache Memory is a high-speed buffer memory between CPU and RAM.
So,
II $\to$ D
RAM is volatile main memory that holds data currently in use by the OS and applications.
So,
III $\to$ A
CPU Registers are the fastest and smallest storage available for processor computations.
So,
IV $\to$ C
Therefore, the correct matching is:
I-B, II-D, III-A, IV-C
Solution
Solution
✅ Concept:
The Accumulator is a special-purpose register used by the ALU to store intermediate results during arithmetic and logic operations.
✅ Explanation:
- It simplifies CPU design by reducing the number of memory accesses.
- Results of one operation are stored in the accumulator and used in the next.
- Widely used in simple or older CPU architectures.
✅ Final Answer: $\boxed{\text{Accumulator}}$
Solution
The rendering engine is responsible for displaying the web page on the screen.
It takes HTML, CSS, and JavaScript output and converts them into the visual layout that the user can interact with.
A JavaScript engine mainly executes JavaScript code.
Network protocol stack handles communication over the network.
Transport Layer Security Protocol is used for secure communication.
Solution
Solution
✅ Conversion (Using Powers of 2):
- 1 Terabyte (TB) = $2^{10}$ Gigabytes (GB)
- 1 Exabyte (EB) = $2^{10}$ Petabytes (PB)
- 1 Petabyte (PB) = $2^{10}$ Terabytes (TB)
- Therefore, 1 Exabyte (EB) = $2^{10} \times 2^{10} \times 2^{10} = 2^{30}$ Gigabytes (GB)
✅ Final Answer:
- 1 Terabyte (TB) = $\boxed{2^{10}}$ GB
- 1 Exabyte (EB) = $\boxed{2^{30}}$ GB
| 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 |
What are "Cookies" in the context of web browsing?
Solution
Cookies are small text files stored on the user's computer by websites.
They are used to save information such as login status, preferences, shopping cart data, and tracking details.
Cookies are not simply browsing history.
They are also not viruses by default.
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