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NIMCET 2025 #407
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NIMCET 2025 #408
Consider the Boolean expression $ X = \overline{(A + B) \cdot C}$ over two Boolean variables $A$
and $B$. Which one of the following Boolean expressions is equivalent to the given Boolean
expression $X$?
NIMCET 2025 #409
Which of the following is the CORRECT truth table for the XOR Gate with two binary inputs A and
B?
NIMCET 2025 #410
Given an unsigned 32-bit integer $x$, which of the following C/C++ expressions
correctly toggles $m$ bits starting from position $p$ (with the least significant bit at position
$0$)?
Assume: x is the input integer; p is the starting position of the bit range (0-based, LSB at
position 0); m is the number of bits to toggle; and No overflow or invalid input conditions occur.
Which of the following correctly toggles $m$ bits of $x$ starting from position $p$?
NIMCET 2025 #411
NIMCET 2025 #412
Consider the Boolean function in a CPU control unit:
\[
Y = (A + B\cdot \overline{C}) \cdot (\overline{A}\cdot B + C)
\]
NIMCET 2025 #413
Dynamic RAM (DRAM) stores each bit of data in a separate capacitor. Due to
leakage, the stored charge tends to dissipate over time and needs to be refreshed
periodically. Consider the following statements:
P: DRAM requires refreshing because it uses capacitors to store bits.
P: DRAM requires refreshing because it uses capacitors to store bits.
Q: SRAM does not require refreshing because it uses
flip-flops instead of
capacitors.
R: DRAM is faster than SRAM because it needs less frequent access.
S: DRAM is more suitable for main memory than SRAM due to its density.
R: DRAM is faster than SRAM because it needs less frequent access.
S: DRAM is more suitable for main memory than SRAM due to its density.
NIMCET 2025 #414
In 8-bit two's complement arithmetic, compute the result of the following addition:
A = 10011001, B = 11010111. What is the resulting 8-bit binary value?
NIMCET 2025 #415
In the design of a control unit of a processor, two common approaches are used:
hardware control and microprogrammed control. Consider the following
statements:
- Hardware control units are generally faster but more difficult to modify than microprogrammed control units.
- In a horizontal microprogrammed control unit, each control signal has a separate bit in the control word.
- Vertical microprogramming leads to longer control words but provides greater parallelism.
- Microprogrammed control units are typically easier to implement and modify than hardware control units.
NIMCET 2025 #416
Consider a system with a CPU having 6 registers and 32-bit instructions. The
maximum possible size of the main memory is 512 KB (1K = 210). Each instruction
takes two registers and one memory address as operands. Which one of the
following correctly gives the maximum possible distinct instructions that can be
there in the instruction set of the CPU?
NIMCET 2025 #417
Match all items in Group 1 with correct options from those given in Group 2.
| GROUP 1 | GROUP 2 |
| P. Intermediate representation | 1. Activation records |
| Q. Top-down parsing | 2. Code generation |
| R. Runtime environments | 3. Leftmost derivation |
| S. Register allocation | 4. Graph colouring |
NIMCET 2025 #418
Which of the following secondary storage devices has the fastest access time: Optical
Drive,
Magnetic Tape Drive, Hard Disk Drive (HDD), Solid State Drive (SDD)?
NIMCET 2025 #419
Consider a 9-bit representation. Which of the following correctly gives the smallest
number that
can be represented in:
(i) 1's complement,
(ii) 2's complement
NIMCET 2025 #420
NIMCET 2025 #421
In an instruction execution pipeline, the earliest that the instruction TLB and data
TLB
can be accessed are
NIMCET 2025 #422
Given the Boolean expression $ (A \oplus B) \land (B \to C), $ which of the
following rows in the truth table would have an output of $1$ (True)?
NIMCET 2025 #423
Consider a system running under two types of workloads:
(a) CPU-intensive
jobs,
(b) I/O-intensive jobs. Which of the following statements about the relative
performance of Interrupt-driven I/O and Programmed I/O is correct?
NIMCET 2025 #424
In computer architecture, which of the following correctly matches the fundamental
unit used in the CPU, cache, and main memory respectively?
NIMCET 2025 #425