Overview of Operating System

A set of flashcards covering key terms and concepts related to operating systems.

Operating System (OS)

A resource allocator and control program that manages computer resources and execution of applications.

Kernel

The core part of an operating system that manages hardware resources and provides basic services for all other parts of the system.

Process Management

The method by which an operating system manages the execution of processes.

Memory Management

The process of controlling and coordinating computer memory, including physical and virtual memory.

File System Management

The handling of the creation, deletion, and access of files and directories.

Device (I/O) Management

The management of input/output devices and their communication with the operating system.

Security and Access Control Management

The processes involved in verifying user credentials and controlling access to system resources.

User Interface

The means through which users interact with the operating system, including CLI and GUI.

Network Management

The administration and monitoring of network protocols and connections between devices.

Concurrency Control

The management of simultaneous execution of processes in the operating system.

Process Control Block (PCB)

A data structure containing information about a process such as its ID, priority, and status.

Memory Allocation & Deallocation

The process of assigning and freeing memory for different processes.

File Control Block

A data structure that contains information about a file, including its attributes and control information.

Authentication

The process of verifying user credentials to gain access to a system.

Authorization

The process of controlling permissions granted to users regarding files and directories.

Encryption

The method of securing data to ensure its confidentiality and integrity.