2.1.1 Thinking abstractly

Question 1

abstraction

Answer 1

process of removing excessive/irrelevant details so problem consists of only key features.

Question 2

need for abstraction

Answer 2

hides information too complex or unnecessary/irrelevant to main purpose

Question 3

advantages of abstraction

Answer 3

• more efficient design during software development, as programmers can focus on main purpose of program
• reduces time needed to be spent on the project
• removing irrelevant details prevents program from getting large

Question 4

disadvantages of abstraction

Answer 4

• loss of detail, may be needed if errors occur

Question 5

abstraction vs reality

Answer 5

• abstraction is simplified representation of reality

Question 6

describing abstract model

Answer 6

• what problem needs to be solved?
• how will model be used?
• who will model be used by?
• which parts of problem are relevant?