OS Day 4

Which process can be affected by other processes executing in the system?

• cooperating process

• child process

• parent process

• init process

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 ________

• dynamic condition

• race condition

• essential condition

• critical condition

Which of the following is the most basic problem in process synchronization?

• Critical section problem

• Producer-consumer problem

• Dining philosophers problem

• Bounded buffer problem

In a multi-process system, which part of the code must be executed mutually exclusively?

• Critical section

• Non-critical section

• Initialization section

• Termination section

If a process is executing in its critical section, then no other processes can be executing in their critical section. What is this condition called?

• mutual exclusion

• critical exclusion

• synchronous exclusion

• asynchronous exclusion

Which one of the following is a synchronization tool?

• thread

• pipe

• semaphore

• socket

Which of the following is a binary semaphore?

• Counting semaphore

• Mutex semaphore

• Binary counting semaphore

• All of the above

Which synchronization tool is used to provide mutual exclusion?

•  Semaphore

• Monitor

• Lock

• Barrier

A semaphore is a shared integer variable __________

• that can not drop below zero

• that can not be more than zero

• that can not drop below one

• that can not be more than one

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 inversion

• priority removal

• priority exchange

• priority modification