Computer Organization and Architecture Practice Test 3

1. The code sent by the device in vectored interrupt is _____ long.

upto 32 bits

4-8 bits

upto 16 bits

upto 24 bits

2. The 8085 microprocessor responds to the presence of an interrupt ___________

As soon as the trap pin becomes 'LOW'

By checking the trap pin for 'high' status at regular intervals

By checking the trap pin for 'high' status at the end of each instruction fetch

By checking the trap pin for 'high' status at the end of execution of each instruction

3. Interrupts initiated by an instruction is called as _______

Software

Internal

External

Hardware

4. The interrupt-request line is a part of the ___________

Control line

None of the mentioned

Address line

Data line

5. To overcome the conflict over the possession of the BUS we use ______

Optimizers

Multiple BUS structure

None of the mentioned

BUS arbitrators

6. In Distributed arbitration, the device requesting the BUS ______

Sends an acknowledge signal

Sends an interrupt signal

None of the mentioned

Asserts the Start arbitration signal

7. How can the processor ignore other interrupts when it is servicing one ___________

By disabling the devices from sending the interrupts

By turning off the interrupt request line

All of the mentioned

BY using edge-triggered request lines

8. A privilege exception is raised __________

When a process tries to change the mode of the system

When a process tries to change the priority level of the other processes

When a process tries to access the memory allocated to other users

All of the mentioned

9. The technique whereby the DMA controller steals the access cycles of the processor to operate is called __________

Fast conning

Memory Con

Memory stealing

Cycle stealing

10. The controller uses _____ to help with the transfers when handling network interfaces.

Bridge circuits

All of the mentioned

Input Buffer storage

Signal enhancers