OperatingSystems

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

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

• Library
  

• System calls

• Assembly instructions

• API

Which of the following is not an operating system?

• 1. Windows

• 1. Linux

• 1. Oracle

• 1. DOS

What is the mean of the Booting in the operating system?

• 1. Restarting computer

• 1. Install the program

• 1. To scan

• 1. To turn off

Banker's algorithm is used for?

• 1. To prevent deadlock

• 1. For deadlock recovery

• 1. To solve the deadlock

• 1. None of these

Thread is a --------

• Light weight process

• Heavy Weight process

• Multi process

• I/O process

What else is a command interpreter called?

• prompt

• command

• kernel

• shell

Which command in Unix is used to display the current directory's contents?

• ls

• cd

• mkdir

• touch

A process is:

• An instance of a program in execution

• A set of instructions stored on disk

• The same as a thread

• A type of computer virus

Context switching is:

• The process of saving and restoring the state of a CPU so that multiple processes can share a single CPU resource

• The act of switching between different applications by the user

• A method of disk scheduling

• None of the above