Operating System Flashcards
1
Q
What does the operating system do?
A
Manages:
- UI (GUI or CLI)
- Memory management (where data is stored)
- Multitasking
- Peripheral Management
2
Q
What is the user interface?
A
Allows the user to interact with the hardware and software
3
Q
What does the operating system manage?
A
- RAM
- ROM
- secondary storage (hard drives)
- Moves data between RAM and secondary storage and vice versa
- Checks free memory location
- Knows exactly what is stored in each memory location
- Checks in advance if there is enough space to load a process
4
Q
What is the order that the tasks are carried out in called?
A
Scheduling
5
Q
What does a device driver do?
A
A program that makes sure that a device performs its tasks correctly
6
Q
Which one is faster, the peripherals or the CPU?
A
CPU
7
Q
What are buffers?
A
The peripherals are slower than the CPU so if the CPU has to constantly wait for the peripheral, it will slow everything down. A buffer is a section of RAM which holds data temporarily.
8
Q
How do buffers work when printing something out?
A
- The OS sends the data to the buffer
- This is a fast process since the data is being moved to the RAM
- The OS can do other tasks while the printer takes the data from the buffer
