Computer Organization and Architecture Mcqs

Page No. 18

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


aupto 16 bits

✖


bupto 32 bits

✖


cupto 24 bits

✖


d4-8 bits

✓


View Answer 4-8 bits

In vectored interrupts, how does the device identify itself to the processor?


a By sending its device id

✖


bBy sending the machine code for the interrupt service routine

✖


cBy sending the starting address of the service routine

✓


dNone of the mentioned

✖



The interrupt servicing mechanism in which the requesting device identifies itself to the processor to be serviced is ___________


aPolling

✖


bVectored interrupts

✓


cInterrupt nesting

✖


dSimultaneous requesting

✖


View Answer Vectored interrupts

When dealing with multiple devices interrupts, which mechanism is easy to implement?


a Polling method

✓


bVectored interrupts

✖


cInterrupt nesting

✖


dNone of the mentioned

✖


View Answer Polling method

How is a privilege exception dealt with?


ahe program is halted and the system switches into supervisor mode and restarts the program execution

✓


bThe Program is stopped and removed from the queue

✖


cThe system switches the mode and starts the execution of a new process

✖


dThe system switches mode and runs the debugger

✖



A privilege exception is raised __________


aWhen a process tries to change the mode of the system

✖


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

✖


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

✖


dAll of the mentioned

✓


View Answer All of the mentioned

The instructions which can be run only supervisor mode are?


aNon-privileged instructions

✖


bystem instructions

✖


cPrivileged instructions

✓


dException instructions

✖



What are the different modes of operation of a computer?


aUser and System mode

✖


bUser and Supervisor mode

✓


cSupervisor and Trace mode

✖


dSupervisor, User and Trace mode

✖



What is the operation in Breakpoint mode?


aThe program is interrupted after each detection

✖


bThe program will not be stopped and the errors are sorted out after the complete program is scanned

✖


cThere is no effect on the program, i.e the program is executed without rectification of errors

✖


dThe program is halted only at specific points

✓



In trace mode of operation is ________


aThe program is interrupted after each detection

✓


bThe program will not be stopped and the errors are sorted out after the complete program is scanned

✖


cThere is no effect on the program, i.e the program is executed without rectification of errors

✖


dThe program is halted only at specific points

✖



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