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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