Operating System

What is an operating system?

• interface between the hardware and application programs

• collection of programs that manages hardware resources

• system service provider to the application programs

• all of the mentioned

What is the main function of the command interpreter?

• to provide the interface between the API and application program

• to handle the files in the operating system

• to get and execute the next user-specified command

• none of the mentioned

To access the services of the operating system, the interface is provided by the

• Library

• System calls

• Assembly instructions

• API

CPU scheduling is the basis of

• multiprogramming operating systems

• larger memory sized systems

• multiprocessor systems

• none of the mentioned

Where is the operating system placed in the memory?

• either low or high memory (depending on the location of interrupt vector)

• in the low memory

• in the high memory

• none of the mentioned

In a timeshare operating system, when the time slot assigned to a process is completed, the process switches from the current state to?

• Suspended state

• Terminated state

• Ready state

• Blocked state

The portion of the process scheduler in an operating system that dispatches processes is concerned with

• assigning ready processes to waiting queue

• assigning running processes to blocked queue

• assigning ready processes to CPU

• all of the mentioned

For an effective operating system, when to check for deadlock?

• every time a resource request is made at fixed time intervals

• at fixed time intervals

• every time a resource request is made

• none of the mentioned

In Unix, which system call creates the new process?

• create

• fork

• new

• none of the mentioned

What will happen in the single level directory?

• All files are contained in the same directory

• All files are contained in different directories all at the same level

• Depends on the operating system

• None of the mentioned