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

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

Top-down Design and Stepwise Refinement

Top-down Design and Rapid Application Development

A Vector Graphic contains three squares and two circles. Choose the correct effect below if a triangle is added to the graphic:

The file size will increase slightly

The file size will stay the same

Explain fully why cache memory enhances the execution of a piece of software

Cache is fast access memory close to the processor holding frequently used instructions

Cache is memory close to the processor holding frequently used instructions

Cache is fast access memory close to the processor

Cache holds frequently used instructions

What is a compound key?

a primary key created from more than one field

a primary key created from more than one record

a primary key created from more than one table

A list of 20 names and exam marks is to be stored. Which of these would be the most efficient data structure(s) to use?

a string array and an integer array

20 separate strings and integers

What is the scope of a global variable?

the procedure in which it is declared

the range of values it can hold

is a primary key in its own table and used in a second table to create a link between them

is a field in both tables used to create a link between them

is a primary key used in two tables to create a link between them

is where the primary key is made up of two or more fields

What is a surrogate key?

a field created to uniquely identify a record when no obvious primary key exists

a primary key created from more than one field

a unique identifier for a record

Which law is designed to control the use of personal data?

Copyright, Design and Patents Act

Which of these precautions is most effective for securing personal information such as bank details?

use of anti-virus and firewall software

Which statement best describes what happens to the temporary working memory (RAM) of a computer when it is shut down?

It is saved in the users document files

It is saved in the computer's data storage files

It is synced automatically with the cloud

Select the correct SQL statement to add a new record for Mr Alford to the Teacher table

INSERT INTO Teacher (Title, Surname) VALUES ("Mr","Alford");

SELECT * FROM Teacher WHERE Title="Mr" AND Surname="Alford";

INSERT (Title, Surname) VALUES ("Mr","Alford") INTO Teacher;

INSERT (Title, Surname) VALUES ("Mr","Alford") FROM Teacher;

What type of interface would only suit an expert user?

WIMP - Windows Icon Menu Pointer

Wireframes are used to design user interfaces to

determine the content layout, navigation and interface requirements

determine the layout of the screen

be a visual guide used to communicate the specifications to the user

provide a visual layout of the page content

Which of the following is false about client side scripts?

They are used to retrieve sensitive data from a server.

They rely on the user's computer.

They should not be used to transfer sensitive data.

They can use $GET and $POST methods.

Which answer will complete the SQL statement correctly to display all records where the employees name in the field 'first' is 'Eric' using the database empinfo ?

select * from empinfo where first = 'Eric';

search all from empinfo where first = 'Eric';

select * from employee where first = 'Eric';

select * from empinfo where first = 'Eric';

Which of the following is not a method for optimising the loading times of a website?

Use embedded stylesheets and scripts

Use external scripts and stylesheets

Eliminate code that is not needed.

Which best explains the differences between a flat file and a relational database?

Relational databases have multiple tables to avoid data anomalies which are commonplace in flat file databases

Flat files only have one table and are prone to data inconsistencies unlike relational databases

Validation of data is conducted to ensure

That any data entered is acceptable and sensible

That any data entered is correct

That any data entered is accurate

That any data entered is accurate and sensible

is a primary key in its own table and used in a second table to create a link between them

is a field in both tables used to create a link between them

is a primary key used in two tables to create a link between them

is where the primary key is made up of two or more fields

Higher Computing Prelim Revision Jan 20

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How would you pass a variable changed by a subprogram?

By Value

By Reference

You wouldn't need to pass it at all

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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Higher Computing Prelim Revision Jan 20

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

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

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

How would you pass a variable changed by a subprogram?

Which of these wastes RAM?

How would requirements elicitation be carried out?

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

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

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

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

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