What does the operating system do?
An operating system does two things:
It manages the hardware and software resources of a system. Examples, the processor, memory, and disk space.
It provides a way for applications to deal with the hardware without having to know all the details of the hardware.
What is the difference between utility programs and device drivers?
A driver is a program that enables a hardware device to communicate with the computer operating system, example: keyboard driver, disk driver, mouse driver, printer driver, etc.
Many drivers come with the operating systems. When you connect a new device to your computer, you would need a driver for the device to be recognize and work properly with the operating system.
A utility is a computer software program that performs very specific tasks, utilized to help use, maintain and protect the operating system or other software programs. Examples: antivirus, zip/unzip files, defragmenter. What is the difference and responsiblites of authentication and authorization?
Authentication is a mechanism that systems use securely identify their users.
Authorization is a mechanism that systems use to determine what level of access a particular user should have to secured resources.
No comments:
Post a Comment