Software

Question 1

A question in a program requires a true or false response State the most suitable data type for storing this response?

Answer 1

Boolean.

Question 2

DECLARE name INITIALLY “”
SEND “Please type in your name” TO DISPLAY
SD “Your name is” & name TO DISPLAY
RECEIVE name FROM KEYBOARD…

Identify the syntax error in the program code above.

Answer 2

There is an SD instead of SEND.

Question 3

DECLARE name INITIALLY “”
SEND “Please type in your name” TO DISPLAY
SD “Your name is” & name TO DISPLAY
RECEIVE name FROM KEYBOARD…

Identify the Logic error in the program code above.

Answer 3

The name is displayed before the user enters it.

Question 4

Convert the following 8-bit binary into the number denary.

1110 0010

Answer 4

226.

Question 5

DECLARE answer INITITALLY 0
DECLARE numOne INITIALLY 3
RECEIVE numTwo FROM KEYBOARD
SET answer TO numOne ^ numTwo
SEND answer TO DISPLAY

State the output.

Answer 5

9.

Question 6

Explain why the development of software is called an iterative process.

Answer 6

Previous Stages in development are often revisited.

Question 7

Explain why encryption is used when sending emails across wireless networks.

Answer 7

to try to prevent unauthorized access to content/reading or understanding of email.

Question 8

Using a design technique of your choice, design an efficient solution to ensure that a program will only accept valid numbers (1 or 5) from the user.

Answer 8

A mark for…
Conditional loop
Loop Condition
Input message inside loop
error message.

Question 9

Convert the following 8-bit binary into the number denary.

1011 1001