General

Question 1

What is decomposition?

Answer 1

Splitting a large and difficult computing problem into many, smaller individual problems. Benefits: many people can work on the problem at once, makes it easier to comprehend

Question 2

What is abstraction?

Answer 2

Removing unnecessary detail from a computing problem, so only the important and essential information remains. Benefits: program is simple and more reliable, and created faster.

Question 3

What does the operator // do?

Answer 3

Divides and rounds down the number.

Question 4

What does the operator % do?

Answer 4

Gets the remainder after dividing (useful for finding if a number is even or odd).

Question 5

What does the operator ** do?

Answer 5

It makes the number to the power of the next number (using indices).

Question 6

What is the difference between == and =?

Answer 6

= assigns a value to a variable.
== compares the two things next to it.

Question 7

What do the Boolean Operators do?

Answer 7

AND: Program has to have A and B to work
OR: Program has to have either A or B to work
NOT: Program has to not have C to work

Question 8

What does efficiency in a program mean?

Answer 8

If a program does unecessary work to solve a problem. More efficient programs are not faster, they do less work.

Question 9

What is the difference between truth & trace tables?

Answer 9

Trace: Follows the steps of an algorithm and records when a variable changes. It helps programmers to find and fix mistakes.
Truth: Made up of boolean operators(AND, OR & NOT) called logic gates. Used to plan a program by listing the inputs and checking what the outputs should be.