ITEC55 Reviewer (Part I)

Is a software program that manages computer hardware, software resources, and provides various services for computer programs. It acts as an intermediary between users and the computer hardware.

Had no operating systems. Users interacted directly with hardware using machine language.

Allows users to submit jobs for processing in batches

Allowed multiple users to interact with the computer simultaneously, paving the way for interactive computing.

Brought single-user operating systems like MS-DOS and Apple's System Software.

Operating systems like Windows and macOS made computers more user-friendly.

To manage hardware resources efficiently, including CPU, memory, storage, and I/O devices.

To provide a user-friendly interface for users to interact with the computer.

To protect the system and data from unauthorized access and malicious software.

To manage and schedule processes or tasks efficiently.

To organize and manage files and directories on storage devices.

To control and coordinate input and output devices.

Is a procedure for managing the many processes that are running simultaneously on the operating system. Every software application program has one or more processes associated with them when they are running.

Is a large array of storage or bytes, which has an address. It is conducted by using a sequence of reads or writes of specific memory addresses.

Is a set of related information which is should define by its creator. It commonly represents programs, both source and object forms, and data.

One of the important uses of an operating system that helps you to hide the variations of specific hardware devices from the user.

This memory of the computer is very small to store all data and programs permanently. The computer system offers secondary storage to back up the main Memory.

Is the process of administering and managing computer networks. It includes performance management, fault analysis, provisioning of networks, and maintaining the quality of service.

The various processes in an operating system need to be secured from each other’s activities. For that purpose, various mechanisms can be used to ensure that those processes which want to operate files, memory CPU, and other hardware resources should have proper authorization from the operating system.