First IA- Operating System(18CS43)

What is operating system?

• collection of programs that manages hardware resources

• system service provider to the application programs

• link to interface the hardware and application programs

• all of the mentioned

In Unix, Which system call creates the new process?

• fork

• create

• new

• none of the mentioned

Process is

• program in High level language kept on disk

• contents of main memory

• a program in execution

• a job in secondary memory

Which of the following is not the state of a process ?

• new

• old

• Waiting

• Terminated

When the process issues an I/O request :

• It is placed in an I/O queue

• It is placed in a waiting queue

• It is placed in the ready queue

• It is placed in the Job queue

What is interprocess communication?

• communication within the process

• communication between two process

• communication between two threads of same process

• none of the mentioned

A thread is also called :

• Light Weight Process(LWP)

• Heavy Weight Process(HWP)

• process

• None of these

The model in which one kernel thread is mapped to many user-level threads is called :

• Many to One model

• One to Many model

• Many to Many model

• One to One model

The One to One model allows :

• increased concurrency

• decreased concurrency

• increased or decreased concurrency

• concurrency equivalent to other models

Which module gives control of the CPU to the process selected by the short-term scheduler?

• dispatcher

• interrupt

• scheduler

• none of the mentioned