5 Stem Cells

Question 1

Summary of 5 stem cells

Answer 1

Process control
File management 
Device management 
Information maintained 
Communication

Question 2

Process control

Answer 2

Handles processes e.g. process termination

Question 3

File management

Answer 3

Handles file manipulation e.g. creating files

Question 4

Device management

Answer 4

Handles device manipulation e.g. reading device buffer

Question 5

Information maintenance on

Answer 5

Handles information and transfers between OS and user program

Question 6

Communication

Answer 6

Useful for inter process communication

Question 7

What is API

Answer 7

Set of routines, protocols and tools used to build a software program

Question 8

Advantages of API

Answer 8

• easy and efficient to use
• provides security to kernel because it’s not being used
• if the system supports the API, any program used it can be compiled and ran

Question 9

System Call
X
API relationship

Answer 9

Illustration