Chantello's Components of an Operating System

Chantello's Components of an Operating System

1. Memory Management

   • Keeps track of which parts of memory are currently being used and by who
   • distribute and return memory space as needed
   • Decide which processes to load when memory space becomes available

2. Process Management

   • A process is when a program is being executed.
   • CPU time, memory, files, and I/O devices are resources that a process needs to finish its task
   • The operating system is responsible for the following activities in connection with the process mangement

3. File Management

   • File creation and deletion
   • Directory creation and deletion
   • Support of primitives for manipulating files and directories
   • Mapping files onto secondary storage
   • File backup on stable storage media

4. I/O System Management

   • A buffer-caching system
   • A general device-driver interface
   • Drivers for specific hardware devices

5. Protection System

   • Distinguish between authorized and unauthorized usage
   • Lets you know if you are downloading/opening an potential treat to your computer
   • Protects your computer from viruses, trojans, etc