Types of OS(1.2.1 e)

Question 1

Multi tasking OS

Answer 1

can do many things at once
most modern OS’s are multi tasking especially consumer ones

Question 2

Some issues with multi tasking OS

Answer 2

lots of power
CPU heating up
more RAM and cores needed

Question 3

Multi user OS

Answer 3

multiple users want to use same physical hardware at the same time
need to juggle requirements of all the people using the machine at any given time
often used on servers where many people can be using the same hardware at the dame time(thin clients)

Question 4

Distributed OS

Answer 4

enable multiple computers to be combined to complete a single task
many computers combined into a single entity
vital for servers

Question 5

Embedded OS

Answer 5

an embedded computer has a fixed purpose and typically interact ith a physical machine

Question 6

Why do embedded systems have limited resources?

Answer 6

due to cost/power constraints and often stored on ROM

Question 7

Key to embedded system?

Answer 7

efficiency and reliability

Question 8

Real time OS

Answer 8

used in critical systems
processes must be executed in a set time frame
if a process isn’t executed on time the wider system will fail

Question 9

What is real time OS sometimes referred to as?

Answer 9

deterministic

Question 10

Why will a computer in a real time OS rarely run at capacity?

Answer 10

to guarantee tasks will e executed on time

Question 11

Overlapping classifications

Answer 11

a single given system could have an OS that fits many of these classifications