MCA Entrance Previous Year Question Bank

Why is the width of a data bus so important to the processing speed of a computer ?

Which of the following units is used to supervise each instruction in the CPU?

Which one of the following is a stored program machine?

To fetch data from the secondary memory which one of the following register is used?

Which of the following is used by ALU to store the intermediate results?

Which of the following is true about Von Neumann architecture?

Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

In the design of a control unit of a processor, two common approaches are used:

hardware control and microprogrammed control. Consider the following statements:

I. Hardware control units are generally faster but more difficult to modify than microprogrammed control units.

II. In a horizontal microprogrammed control unit, each control signal has a separate bit in the control word.

III. Vertical microprogramming leads to longer control words but provides greater parallelism.

IV. Microprogrammed control units are typically easier to implement and modify than hardware control units

In computer architecture, which of the following correctly matches the fundamental unit used in the CPU, cache, and main memory respectively?

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=1024) 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?