National 5 Computing Science Prelim Revision

Select all the ways that a program can be evaluated

• Fitness for Purpose

• Efficiency of Code

• Robustness

• Readability

Select all the possible data structures

• 1D Array

• Variable

• Lattice

• Matrix

Which data type can only hold True or False

• Boolean

• Integer

• Real

• Single

Which data type would you say in the SQA exam is used to hold the number 4.97

• Boolean

• Integer

• Real

• Single

Select all Standard Algorithms for National 5

• Traversing a 1D Array

• Input Validation

• Running Total Within a Loop

• Conditional Statement

Which component carries data to and from Main Memory

• Control Unit

• Registers

• Address Bus

• Data Bus

Which component is temporary storage inside the processor?

• Control Unit

• Registers

• ALU

• RAM

Floating point representation stores real numbers in binary using...

• mantissa and exponent

• vector and exponent

• mantissa and resolution

• vector and resolution

Select all ways of reducing a computer's power consumption

• Lower screen brightness

• Automatic stand by mode

• Stop hard disk spinning after a set time

• Higher capacity hard disk

Select all ways of ensuring a program is readable

• Create a wireframe

• High text size

• Internal commentary

• Meaningful identifiers