[11] OS & Utility Programs

This is the most important software component installed on any computer system.

• Application Software
• Operating System
• Firmware
• Utility Software

The OS performs ____________ tasks on behalf of users and programs.

• hardware-level
• system-level
• application-level
• user-level
• low-level

Answer explanation

• - managers the computer's hardware and peripheral devices

• - consistent means for applications to work w/ the CPU

• - responsible for scheduling and coordination of tasks

This layer of the operating system provide services to application programs or directly to end users

• outermost layers

• innermost layer

This layer of the operating system encapsulates hardware resources for controlling and managing access

• outermost layers

• innermost layer

this is the user interface to the OS through which a user can run applications and manage system resources

• Command Layer

• Service Layer

• Kernel

this contains reusable components that provide basic operations (e.g. file and folder manipulation, I/O access, starting/stopping programs)

• Command Layer

• Service Layer

• Kernel

this manages resources and interacts directly w/ computer hardware

• Command Layer

• Service Layer

• Kernel

The Service layer contains reusable components that provide basic operations accessible through ______________

What is the order of the steps in the boot up process?

• 1. 1. Activating BIOS

  2. 2. Performing the POST

  3. 3. Loading the OS

  4. 4. Apply other configurations

• 1. 1. Performing the POST

  2. 2. Activating BIOS

  3. 3. Loading the OS

  4. 4. Apply other configurations

• 1. 1. Loading the OS

  2. 2. Performing the POST

  3. 3. Activating BIOS

  4. 4. Apply other configurations

• 1. 1. Apply other configurations

  2. 2. Activating BIOS

  3. 3. Performing the POST

  4. 4. Loading the OS

In the first step of the input process, the CPU activates the ___________, a small program stored in ROM on the motherboard that manages the exchange of data between the OS and all the input and output devices attached.

• Basic Input/Output System

• Device Driver
• Power-On Self-Test

• Operating System
• Kernel