Computer Science bits part-2

Q1. In a generic microprocessor, instruction cycle time is….
(A) shorter than machine cycle time
(B) larger than machine cycle time
© exactly double the machine cycle time
(D) exactly the same as the machine cycle time.

Q2. What is the minimum number of operations required, for a microprocessor with 8 data pins, to read a 32-bit word?
(A) 1
(B) 2
© 4
(D) 8

Q.3 The flow and timing of data to and form the microprocessor is regulated by……
(A) control pins
(B) address pins
© data pins
(D) power pins

Q4. What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?
(A) Bus control
(B) Interrupts
© Bus arbitration
(D) Status

Q5. A 32 bits microprocessor has the word length equal to…….
(A) 2 bytes
(B) 1 bytes
© 4 bytes
(D) 8 bytes

Q6. A microprocessor with 12 address lines is capable of addressing……
(A) 1024 locations
(B) 2048 locations
© 4096 locations
(D) 64 k locations

Q7. The stack pointer in the 8085 microprocessor is a…….
(A)16-bit register that point to stack memory locations.
(B) 16-bit accumulator
© memory location in the stack
(D) flag register used for the stack

Q8. Which of the following statements is true about the Program Counter (PC) ?
(A) it is a cell in ROM
(B) It is a register
© During execution of the current instruction, its content changes.
(D) It counts the number of instructions executed in a program.

Q9. Which of the following is not a register?
(A) buffer
(B) stack
© program counter
(D) accumulator

Q10. The clock interrupt handle on a computer requires 2 msee per clock tick. The clock runs at 60 Hz. What per cent of the CPU is devoted to the clock?
(A) 1.2
(B) 7.5
© 12
(D) 18.5

Correct Answers:

  1. B
  2. C
  3. A
  4. C
  5. C
  6. C
  7. A
  8. B
  9. A
  10. C