List of top Computer Awareness Questions asked in NIT MCA Common Entrance Test

Given that numbers A and B are two 8-bit 2’s Complement numbers with \( A = 11111111 \), \( B = 11111111 \). Then sum \( A + B \) is:
Consider an arbitrary number system with independent digits as 0, 1, and A. If we generate the first few numbers in the sequence as 00, 01, 0A, 10, 11, 1A and if this process is continued to generate the numbers, then the position of 10A is:
The expression \( P + QR \) is the reduced form of:
Let the given numbers 11001, 1001, and 111001 correspond to the 2's complement representation. Then with which one of the following decimal numbers, the given numbers match?
Any given truth table can be represented by:
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 needed to provide a memory capacity of 64 Kbytes memory is
The primary purpose of cache memory in a computer system is

The Boolean expression for the following truth table is:

 

The range of the exponent E in the IEEE 754 double precision (Binary 64) format is:
A CPU generates 32 bits virtual addresses. The page size is 4 KB. The processor has a translation look-aside buffer (TLB) which can hold a total of 128-page table entries and is 4-way set associative. The minimum size of the TLB tag is:
Which of the following do not affect CPU performance?
Cache memory functions as an intermediary between

In the figure, the circle stands for employed, the square stands for social worker, the triangle stands for truthful, study the figure with its regions and find the number of neither truthful nor illiterate people among the employed only.

 

Consider the following 4-bit binary numbers represented in the 2's complement form: 1101 and 0100. What would be the result when we add them?
The maximum and minimum value represented in signed 16 bit 2's complement representations are
A bulb in the staircase has two switches, one switch is at the ground floor and the other one is at the first floor. The bulb can be turned ON and also can be turned OFF by any of the switches irrespective of the state of the other switch. The logic of the switching of the bulb resembles:
Which of the following is true about Von Neumann architecture?
What is the name of the storage device that compensates the difference in rates of flow of data from one device to another?

Equivalent of the decimal number \( (25.375)_{10} \) in binary form

Consider the following minterm expression for \( F \): \[ F(P, Q, R, S) = \Sigma(0, 2, 5, 7, 8, 10, 13, 15) \] \(\text{The minterms 2, 7, 8, and 13 are don't care terms. The minimal sum of products form for F is}\)

The time required for fetching and execution of one machine instruction is
Suppose we have a 10-bit computer that uses 10-bit 2's complement representation. The number representation of -35 is
What is a potential problem of 1's complement representation of numbers?
How many 32K × 1 RAM chips are needed to provide a memory capacity of 256 K?

Consider the circuit shown below and find the minimum number of NAND gates required to design it.