Operating System Questions & Answers – Real Time System – Implementing RT Operating Systems – 1

This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Real Time System – Implementing RT Operating Systems – 1”.

1. The disadvantage of real addressing mode is :
a) there is a lot of cost involved
b) time consumption overhead
c) absence of memory protection between processes
d) restricted access to memory locations by processes
View Answer

2. Preemptive, priority based scheduling guarantees :
a) hard real time functionality
b) soft real time functionality
c) protection of memory
d) none of the mentioned
View Answer

3. Real time systems must have :
a) preemptive kernels
b) non preemptive kernels
c) preemptive kernels or non preemptive kernels
d) neither preemptive nor non preemptive kernels
View Answer

4. Event latency is :
a) the amount of time an event takes to occur from when the system started
b) the amount of time from the event occurance till the system stops
c) the amount of time from event occurance till the event crashes
d) the amount of time that elapses from when an event occurs to when it is serviced.
View Answer

5. Interrupt latency refers to the period of time :
a) from the occurance of an event to the arrival of an interrupt
b) from the occurance of an event to the servicing of an interrupt
c) from arrival of an interrupt to the start of the interrupt service routine
d) none of the mentioned
View Answer

6. Real time systems need to __________ the interrupt latency.
a) minimize
b) maximize
c) not bother about
d) none of the mentioned
View Answer

7. The amount of time required for the scheduling dispatcher to stop one process and start another is known as ______________
a) event latency
b) interrupt latency
c) dispatch latency
d) context switch
View Answer

8. The most effective technique to keep dispatch latency low is to :
a) provide non preemptive kernels
b) provide preemptive kernels
c) make it user programmed
d) run less number of processes at a time
View Answer

9. Priority inversion is solved by use of _____________
a) priority inheritance protocol
b) two phase lock protocol
c) time protocol
d) all of the mentioned
View Answer

Sanfoundry Global Education & Learning Series – Operating System.