Homework Answers
Convoy effect occurs in first come first scheduling when the OS slows down due to a very slow process.
Therefore, it reduces the CPU utilisation. Option a) cannot be the correct choice.
Response time is the time taken to respond to some request made by a process. Since, because of a very slow process, other processes have to wait for the CPU, therefore, it reduces the response time. Option b) is therefore correct.
It takes effect when we have non-preemptable resources because had it been the case of a preemptable resource, we would have allocated it to some other process and prevent this from option. It is therefore an incorrect choice.
This happens when a mix of input output and CPU bound processes are running actively, after the input output request being fulfilled, process wait for the CPU allocation because of a process which has a very long burst time. Therefore, it is the correct choice.
Correct answers are b and d.
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