Which of the following statements is true about data sizes?

• 1 bit = 8 bytes

• 1 kilobyte = 1000 bytes

• 1 megabyte = 1024 kilobytes

• 1 megabyte is greater than 1 gigabyte

One of the importance of hexadecimal numbers is to represent digital colours.

Which of the following represents the basic digital colours?

• RYB

• RGB

• CMY

• CMYK

A series of steps arranged to solve a problem is called a(n)

• algebra

• algorithm

• program

• pseudocode

Identify the type of flow chart illustrated in the figure above.

• Control structure

• Selection structure

• Sequence structure

• Repetition structure

Examine the code.

If the input for num is 11, what is the output for the code above?

• A

• B

• C

• D

Expert systems are used in medical applications.

From the list below, tick TWO components of an expert system.

• Control unit

• Graphics program

• Inference engine

• Search engine

• Rules base

Tick THREE items of software which a PC connected to the internet might use.

• A modem

• A virus scanner

• An email package

• A browser

• A keyboard

A school library has computerised its book borrowing system. When a book is borrowed the details of the book and the borrower have to be input to the system.

Tick TWO direct data entry devices which could be used in such a system.

• Bar code reader

• Magnetic Ink Character Reader

• Magnetic stripe readers

• Mouse

• RFID chip reader

The introduction of computers in an organisation can either increase or decrease employment.

Tick THREE jobs below for which the introduction of computers will increase the number of workers.

• Car production workers

• Systems analysts

• Delivery drivers

• Payroll workers

• Programmers

Some students at a school want to produce a multimedia presentation to advertise a school play.

Tick TWO types of data which can be used in a multimedia presentation that cannot be used in a hard copy document.

• Text

• Integers

• Sound

• Graphics

• Video