2.1.5

Question 1

Concurrent Thinking

Answer 1

• Considering more than one task at the same time.
• All the tasks need not be actively worked
  on at the same time.
• Giving parts of your time to different tasks
  throughout the day.
• Parts of multiple problems are often related, allowing them to be solved concurrently.

Question 2

Concurrent Processing

Answer 2

• Parallel processing is where multiple
  processors are used to complete the same
  task more quickly.
• Concurrent processing is where a single
  processor works on multiple tasks at the
  same time.
• This gives the appearance the tasks are
  concurrently completed, but in reality they
  are completed one after the other in quick
  succession.

Question 3

Advantages of Concurrent Processing

Answer 3

• More tasks can be completed in a given
  time.
• Other tasks can be completed whilst
  awaiting a user decision meaning less time
  is wasted.

Question 4

Disadvantages of Concurrent Processing

Answer 4

• Can take longer to complete a large
  number of tasks since processes cannot be
  completed at once.
• Some processor time is used to switch
  between and coordinate processes,
  reducing overall throughput.
• Not all tasks are suited to being completed in this way.