Operating System

1. How Operating Systems Work Operating System FunctionsAt the simplest level, an operating system does two things:

• It manages the hardware and software resources of the system. In a desktop computer, these resources include such things as the processor, memory, disk space and more (On a cell phone, they include the keypad, the screen, the address book, the phone dialer, the battery and the network connection).

• It provides a stable, consistent way for applications to deal with the hardware without having to know all the details of the hardware.

2. List 4 different kinds of Operating Systems.

• Real-time operating system (RTOS) - any dedicated machine – alarms• Single-user, single task – Blackberry (changing to multi- tasking , single user)• Single-user, multi-tasking - Windows XP• Multi-user - Unix

3. Name 5 different types of Operating Systems.

• Windows XP, Windows 98 - used on PC• System 5, System 6, System 7 - used on MAC PC• MAC OS 7 , MAC OS 8, MAC OS 9 - use on Mac PC• Server operating systems - Linux, Windows NT,

Windows 2000, Novell 5.1, Citrix , OS/2• Mainframe operating Systems - Unix, DOS , Linux, • IBM - z/OS, z/VSE, z/TPF, z/VM,

• organize and manage files – copy , move, delete, rename files, create shortcuts, set up directories in a tree structure

• save copies of files in different places – especially photos and videos

• general keyboard shortcuts – ctrl c (copy), ctrl v(paste), ctrl x (cut), print and printscreen

4. Describe 3 or 4 different File Management techniques.

Assess User Computing Needs and select appropriate hardware and software for different situations• Student on fixed budget – portability – laptop or put in

one place a desktop• Home business user – desktop, printer, internet –

software that allows you to do business• Gaming enthusiast – need high end graphic card, high

end sound card, lots of RAM memory and high end processor – higher priced desktop – extra fans

• An accountant – computer runs different accounting software, probably portable – laptop

• Computer programmer – computer able to run IDE packages like netbeans, Eclipse – good processing speed and more RAM