Scheduling Methods

Question 1

First come first serve

Answer 1

Processes are executed as they arrive
Processes in the queue have to wait until the currently running process is executed

Question 2

Shortest job first

Answer 2

Picks the shortest then executes it
Scheduler needs to know how long each will take

Question 3

Round Robin

Answer 3

Each process is allotted a fixed amount of time to run
If the process has not finished by the end of the time, it is put at the back of the queue

Question 4

Shortest remaining time

Answer 4

Same as shortest job first except processes can be suspended if a higher priority process enters the queue

Question 5

Multi level feedback queues

Answer 5

Multiple queues possibly with different scheduling methods