Course 1 Week 3 Process Management, Memory Management, and Virtual Memory

Question 1

What is definition of a process? Example?

Answer 1

a program that’s executing

internet browser, text editor

Question 2

What is the definition of a program? Example?

Answer 2

an application we can run, like Chrome

Question 3

What’s the difference between a process and a program?

Answer 3

We can have many processes of the same program running at the same time

(Chrome x5 processes, how many chrome windows open)

Question 4

What resources do we need to run programs?

Answer 4

some like RAM, CPU

Question 5

What is a time slice in relation to the CPU?

Answer 5

The very short interval of time that a CPU uses to execute a process (one by one)

Question 6

2 reasons why a computer would be running slowly and CPU resources being maxed out?

Answer 6

1. One process may be taking more time slices than it should, next process can’t execute
2. Too many processes want CPU time and CPU can’t keep up

Question 7

What is virtual memory?

Answer 7

Combines hard drive space and RAM to give us more memory for processes

Question 8

What are “pages”? Where are they stored?

Answer 8

Chunks of a program’s data

Stored in virtual memory when executing process

Question 9

How do you read and execute pages?

Answer 9

they’re sent to physical memory (RAM)

Question 10

Why would an application slow down when changing menus?

Answer 10

Computer loaded the page for that application from virtual memory into RAM

Question 11

Why not store entire applications in RAM?

Answer 11

Wasteful for large applications (small is possible)

Only need a recipe not the whole cookbook

Question 12

What is “swap space”?

Answer 12

disk space we can use for RAM when virtual memory is stored on hard drive

Question 13

What does the Kernel handle in terms of memory management and pages?

Answer 13

handles process of taking pages (of data) and swapping them between RAM and virtual memory.