2.1.5) Thinking Concurrently

Question 1

What is concurrent computing?

Answer 1

When multiple processes are run on a single processor by dividing time between the processes

Question 2

What is parallel computing?

Answer 2

When multiple processes are run over multiple processor cores.

Question 3

When is parallel computing used?

Answer 3

In games, photo and video editing software and completing multiple tasks at the same time.

Question 4

What must be considered before using parallel computing?

Answer 4

Dependencies

Question 5

What are dependencies?

Answer 5

Tasks that rely on other tasks to run or complete

Question 6

When can batch programs be run?

Answer 6

if tasks do not relate, rely or interact.

Question 7

What must be used if multiple batch processes are running?

Answer 7

Pipelining using concurrent processing.

Question 8

Advantages of parallel computing?

Answer 8

Improves time efficiency takes up less storage.

Question 9

Advantages of concurrent computing?

Answer 9

• Amount completed in a set time increases.
• Time spent waiting is minimised as tasks are swapped

Question 10

Disadvantages of concurrent computing?

Answer 10

Not suitable for large numbers of users of processes