38108659
Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
over 2 years ago
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| Question | Answer |
| What is an Operating System? | > (Set of) programs that manages the operations of the computer for the user > Bridge between the user and the computer's hardware (since a user cannot directly communicate with hardware) |
| What Functions does an Operating System Perform? | > Bridge between the user (through a CLI or GUI) > Memory management > Interrupt service routines > Processor scheduling > Backing store management > Management of I/O > System security (e.g., administrator and root access) |
| Where is the OS Stored? | > When computer is off: permanent storage, e.g., HDD, SSD > When computer is on: RAM |
| What happens to the OS when the Computer is Switched On? | > Small program, called a loader, is held in ROM > The loader sends instructions to load the OS by copying it from the permanent storage into RAM |
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