Software Design and Development Quick Quiz 1

A hexadecimal number is a number expressed in base

• 2

• 4

• 8

• 16

A data flow diagram shows:

• movement of data through a system

• how long it will take to develop a new system

• whether a new system should be developed

• which hardware will be used in the system

A program with a graphical user-interface offers its user the choice of setting a default value for output. The four alternatives are: to the screen, to the printer, to a text file, or to a spreadsheet file. The most appropriate element to present this choice is

• menu bars

• dialogue boxes

• radio buttons

• appropriate control keys

A prototype of a computer-based system or subsystem is

• a limited working model to allow users to get an idea of what it is like

• a diagram showing the flow of data in the system

• a fully working model used for training personnel

• a document describing its operation to users and operators

AND,OR and NOT are called _________ operators:

• relational

• network

• hierarchical

• logical

Binary 11011101 (base 2) in decimal (base 10) would be:

• 189

• DD

• 221

• 225