VIRTUAL MEMORY Flashcards
(4 cards)
1
Q
Define Virtual Memory and give an overview of its functionality
A
Virtual Memory
* Gives illusion of more RAM than actual availability.
- Uses hard drive as extension of RAM.
- Enables running larger or multiple programs concurrently.
- Manages data stored in virtual area by moving data between RAM and hard disk.
Paging: Divides memory into pages, swaps in/out as needed.
Page Table: Maps virtual to physical addresses.
Swap Space: Uses disk when RAM is full.
2
Q
State what problem Virtual Memory is designed to alleviate.
A
“Virtual memory solves RAM limits by using disk space to run bigger/more apps.”
3
Q
On a Microsoft Windows based system, state how the default Virtual Memory value is calculated.
A
the default virtual memory size is typically calculated as 1.5 to 3 times the size of the physical RAM.
4
Q
Swap space
A
Swap Space: When RAM is full, the system uses disk space (swap space) to temporarily hold data, freeing up RAM for other tasks.
