Operating System

The User Mode is concerned with the actual interface between the user and the system.

• True

• False

The Kernel Mode is concerned with everything running in the background.

• True

• False

It is a software code that reside in central core of OS. It has complete control over system.

• kernel

• system call

• boot loader

• bios

When operation system boots, kernel is first part of OS to load in cpu.

• True

• False

Kernel remains in cpu for entire duration of computer session. The kernel code is usually loaded in to protected area of cpu.

• True

• False

It allocates the Kernel’s processing time to various processes.

• scheduler

• supervisor

• interrupt handler

• memory manager

It grants permission to use computer system resources to each process.

• scheduler

• supervisor

• interrupt handler

• memory manager

It handles all requests from the various  hardware devices which compete for kernel services.

• scheduler

• supervisor

• interrupt handler

• memory manager

It allocates space in memory for all users  of kernel service.

• scheduler

• supervisor

• interrupt handler

• memory manager

The programmatic way in which a computer program/user application requests a service from the kernel of the operating system on which it is executed.

• BIOS

• System Call

• Kernel

• Shell