OS THREADS ;)

When high priority task is indirectly preempted by medium priority task effectively inverting the relative priority of the two tasks, the scenario is called __________

• priority removal

• priority modification

• priority inversion

• priority exchange

When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place is called ________

To enable a process to wait within the monitor __________

• semaphore must be used

• condition variables must be used as boolean objects

• synchronization between concurrent procedure invocation

• procedures that operate on shared data structure

Which of the following is the drawback of the One to One Model?

• decreased concurrency provided by this model

• creating a user thread requires creating the corresponding kernel thread

• creating so many threads at once can crash the system

• increased concurrency provided by this model

The code that changes the value of the semaphore is ____________

The time required to create a new thread in an existing process is _____

• equal to the time required to create a new process

• greater than the time required to create a new process

• less than the time required to create a new process

• none of the mentioned

What is the main disadvantage of spinlocks?

• they are not sufficient for many process

• they are unreliable sometimes

• they require busy waiting

• they are too complex for programmers

Which of the following conditions must be satisfied to solve the critical section problem?

• Mutual Exclusion

• Progress

• critical section

• Bounded Waiting

A minimum of _____ variable(s) is/are required to be shared between processes to solve the critical section problem

• one

• three

• two

• four

Which of the following is advantages about thread?

• kernel is single threaded

• Threads minimize the context switching time

• Use of threads provides concurrency within a process

• doesn't affect the concurrency