Higher Computing Prelim Revision Jan 20

How would you pass a variable that is local to one subprogram?

• By Value
• By Reference
• You wouldn't need to pass it at all

How would you pass a variable that is used in a subprogram but not changed?

• By Value
• By Reference
• You wouldn't need to pass it at all

How would you pass an array that is used in a subprogram but not changed?

• By Value
• By Reference
• You wouldn't need to pass it at all

How would you pass a variable changed by a subprogram?

• By Value
• By Reference
• You wouldn't need to pass it at all

Which of these wastes RAM?

• Passing an array by reference
• Passing an array by value
• Using local variables
• Not having Reddit open while you work

How would requirements elicitation be carried out?

• Read documentation about the current system
• Use pseudocode to plan the program
• Make sure the development team have regular meetings
• Pass the requirements by value

Which of these is NOT a reason that an accurate software specification is valuable

• It forms the basis of a legal contract with the client
• It can be used to create a test plan
• It enables a high quality user manual to be written
• It enables the programmers to know exactly what the problem is that they must solve

Which of these is NOT an advantage of Rapid Application Development?

• It enables the programmers to know exactly what the problem is that they must solve
• •Subsystems/specific elements can be prioritised and tested as early as possible 
• •allows changes to the design to be made at any time throughout the life of the project in response to client feedback
• •A range of proposed solutions can be developed on a small scale instead of the need for full implementation

Which of these is the 8 bit two's complement representation of -87

• 10101001
• 01010101
• 00110011
• 11111111

Which of these design methodologies involves taking a main problem and breaking it down into sub-problems?

• Top-down Design and Rapid Application Development
• Agile and Top-down Design
• Top-down Design and Stepwise Refinement
• only Top-down Design