National 5 Computing Science - Revision 2

The value of a variable is saved on RAM. What bus carries the value from the CPU to RAM?

• Address Bus

• Data Bus

• Value Bus

• RAM Bus

Which part of the CPU would work out the result of the calculation 5 * 6?

• ALU

• Control Unit

• Calculation Unit

• Main Memory

The development process can be described as iterative. What does this mean?

• It means you might need to go back a step if you find an error.

• It means you might need to skip over a step if you have removed an error.

• It means you use loops to do multiple testing stages.

• You use a loop to repeat code.

What design notation is shown in the image?

• Structure Diagram

• Flow Chart

• Pseudocode

• Flow Diagram

Which of the following data types are used in programming?

• Text

• Integer

• Real/Float

• Date

• Boolean

Which of the following are logical operator?

• > < ==

• != >= <=

• AND OR NOT

• IF WHILE

What is the purpose of a pre-defined function?

• To carry out a function without having to write the code yourself.

• To get the length of an object.

• To give it a parameter and it will work out which function to use.

• You create code that you can run multiple times without having to rewrite it.

Which programming constructs are used in this code?

• Arithmetic Operations

• Iteration

• Assignment

• Selection

• String Concatenation

What is a standard algorithm?

• A solution to a common programming problem.

• Code that you can use by writing it's name then brackets EG. len("Hello")

• A standard for writing code to ensure you have no syntax errors.

• A set of instructions that a computer can follow to carry out a standard arithmetic operation.

What are the four points of evaluation for a program?

• Fitness for Purpose, Efficient Coding Constructs, Robustness and Readability

• Accuracy, Fitness for Purpose, Efficient Syntax and Decomposition

• Pattern Recognition, Fitness for Purpose, Robustness and Readability

• Readability, Efficient Syntax, Accuracy and Abstraction