TITLE
HET: DIPLOMA: INFORMATION TECHNOLOGY
SUBJECT
PROGRAMMING 1A
SUBJECT CODE
PRG120
TEST/EXAM
EXAMINATION
SEMESTER
1st
DATE WRITTEN
13 June 2018
TOTAL MARKS
100
DURATION
1 HOUR 30 MINUTES
PASS MARK
50%
WEIGHTING
60%
EXAMINER
Mr MATHEBULA THABISO
MODERATOR
Mr JOHN ALLOZIEM
REQUIREMENTS:
Learner Requirements:
Stationery
Equipment Requirement:
Computer installed with VB. Software
This paper consists of:
Marks
1. Section A: Short Questions
20 Marks
2. Section B: Medium Questions
20 Marks
3. Section C: Long Questions
60 Marks
Unless otherwise stated, please answer ALL questions.
PLEASE READ THE ASSESSMENT RULES AND REGULATIONS THAT FOLLOW
Learners are warned that contravening any of the examination rules or disobeying the instructions of an
invigilator could result in the examination being declared invalid. Disciplinary measures will be taken which may
result in the students’ expulsion from Damelin.
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 1 of 14
2018
ASSESSMENT RULES AND REGULATIONS
Please ensure that you have read and fully understand the following assessment rules and regulations prior to
commencing with your assessment:
1.
To be permitted access to the examination, a learner must arrive with:
1.1 an Identity Document or other official proof of identity (for example, - a student card, passport
or driver's licence card with photo); and
1.2 the required exam stationery.
2.
No learner may enter the examination room more than 30 minutes after the examination sitting has
commenced and no candidate may leave the room less than one hour after the examination sitting has
commenced.
3.
No extra time will be allowed should a student arrive late.
4.
All learners must sign the Attendance Register for the examination on arrival.
5.
It is the responsibility of learners to familiarise themselves with the examination rules prior to sitting for
the examination.
6.
All examinations are to be written on the date and time officially stipulated by the College.
7.
It is the responsibility of learners to ensure that they are writing the correct paper and that the question
paper is complete
8.
Cell phones must be switched off prior to entering the exam venue. Cell phones and wallets may be
placed under candidates' chairs rather than at the front of the room.
9.
Learners may not handle cell phones or wallets during the exam.
10. No weapon of any description may be taken into the assessment room.
11. All personal belongings are to be placed at the front of the examination room. Personal belongings brought
to the examination are at the owner's risk.
12. Smoking is not permitted and learners will not be allowed to leave the examination room in order to smoke
13. Once the examination has commenced, all conversation of any form between candidates must cease until
after candidates have left the room, after the examination.
14. Only the official College examination book, as supplied by the College, may be used.
15. Learners must ensure that their student number is written on the answer book.
16. Learners are responsible for ensuring that they follow the instructions in the examination for submitting
their answers.
17. Please read the instruction appearing on the examination paper carefully
18. The number of every question must be clearly indicated at the top of every answer.
19. No pages may be torn out of the answer book. All question papers and scrap paper must be handed to
the invigilator after the examination.
20. Learners finishing earlier are to leave the examination room as quietly as possible on the instruction of
the invigilator, and may not talk until outside the building where the examination is being written.
21. Only under exceptional circumstances will a learner be permitted to leave the examination room during
the examination, and if the invigilator gives permission. An invigilator must accompany the learner. Only
one learner at a time may be absent from the examination room.
22. Candidates may not act dishonestly in any respect.
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 2 of 14
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SECTION A: SHORT QUESTIONS
[20 MARKS]
Answer all questions
Question 1
[10]
MULTIPLE CHOICE QUESTIONS
Choose the correct answer:
1) Where decisions are made, computations are performed, and input/output requests are delegated. It
also governs and manages all the processing which takes place inside the computer.
a) Arithmetic logic
b) CPU
c) Input device
d) Memory
2) What is the output of the following program:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 1
Do While x <= 10
lsbDisplay.Items.Add(x)
x -= 1
Loop
End Sub
End Class
a)
b)
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 3 of 14
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c)
d) No output, Infinite loop.
3) What is the output of the following program:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x, y As Integer
Dim s As String = " "
For x = 1 To 15
For y = 1 To x
s += " # "
Next
lsbDisplay.Items.Add(s)
s=""
Next
End Sub
End Class
a)
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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b)
c)
d)
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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4) How many time will the word Hi be displayed on the list box when you run the following program?
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 2
Do
lsbDisplay.Items.Add("Hi")
x += x
Loop Until (x <= 20)
End Sub
End Class
a) 4
b) 1
c) 20
d) No output
5) How many time will the word Hi be displayed on the list box when you run the following program?
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 0
Do
lsbDisplay.Items.Add("Hi")
x += 1
Loop Until (x > 20)
End Sub
End Class
a) 21
b) 20
c) 0
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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d) 19
6) How many time will the word Hi be displayed on the list box when you run the following program?
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 1
While x < 20
lsbDisplay.Items.Add("Hi")
x += 1
End While
End Sub
End Class
a) 20
b) 19
c) 21
d) 0
7) How many time will the word Hi be displayed on the list box when you run the following program?
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 0
While x < 20
lsbDisplay.Items.Add("Hi")
x += 1
End While
End Sub
End Class
a) 21
b) 20
c) 19
d) 0
8) What will be displayed on the list box after running the following code:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 15
If x < 20 Then
If x < 10 Then
lsbDisplay.Items.Add("Less than 10")
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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Else
lsbDisplay.Items.Add("Large")
End If
End If
End Sub
End Class
a) Nothing
b) Less than 10
c) Large
d) No output
9) What will be displayed on the list box after running the following code:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 5
If x > 5 Then
lsbDisplay.Items.Add("x is bigger than 5")
End If
lsbDisplay.Items.Add("That is all.")
lsbDisplay.Items.Add("Goodbye")
End Sub
End Class
a) X is bigger than 5
That is all.
Goodbye
b) That is all
Goodbye
c)
Goodbye
d) X is bigger than 5
10) What will be displayed on the list box after running the following code:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 5
If x >= 5 Then
lsbDisplay.Items.Add("x is bigger than 5")
End If
lsbDisplay.Items.Add("That is all.")
lsbDisplay.Items.Add("Goodbye")
End Sub
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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End Class
a) X is bigger than 5
That is all.
Goodbye
b) That is all
Goodbye
c)
Goodbye
d) X is bigger than 5
Question 2
[10]
TRUE AND FALSE QUESTIONS
Write True or False, provide reason if you say False
2.1 Object-oriented programming is widely believed to be the significant breakthrough that can greatly
enhance programmer productivity.
2.2 Early computers can perform multiple jobs or tasks at the same time.
2.3 A computer is an electronic device capable of performing computations and making logical decisions at
speeds millions and even billions of times faster than those of human beings.
2.4 Distributed computing is when an organization’s computing is distributed over networks to the sites at
which the work of the organization is performed, instead of the computing being performed only at a central
computer installation.
2.5 A Computer is an electronic device which can receive information in a particular form and performing
sequence of operations in accordance with a predetermined set of procedural instructions to produce a result.
2.6 A program is a set of instructions that can’t performs a specific task when executed by a computer
2.7 Multiprogramming involves the “simultaneous” operation of many jobs on a computer that splits its
resources among those jobs.
2.8 Arithmetic Logic Unit performs some arithmetic and logic calculations.
2.9 Bits are smallest data item which can take either 0s or 1s.
2.10 Fields are group of related records.
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 9 of 14
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SECTION B: MEDIUM QUESTIONS
[20 MARKS]
Answer all questions
Question 3
[10]
Consider the following GUI and the program below:
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim x As Integer = 23
Dim y As Integer = 15
Dim temp As Integer = 0
temp = x
x=y
y = temp
lsbDisplay.Items.Add("The value of x is " & x.ToString())
lsbDisplay.Items.Add("The value of y is " & y.ToString())
End Sub
End Class
1) Explain in details what does the above program do?
(6)
2) What is the output of the above program?
(4)
Question 4
[10]
Consider the following GUI and incomplete code below
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 10 of 14
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Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim marks As Integer = 70
'insert your code here
End Sub
End Class
Complete the code above so that it will be able to display the following on the list box:
If student’s grade is greater than or equal to 90
Display “A”
ElseIf student’s grade is greater than or equal to 80
Display “B”
Else If student’s grade is greater than or equal to 70
Display “C”
ElseIf student’s grade is greater than or equal to 60
Display “D”
Else
Display “F”
End IF
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 11 of 14
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SECTION C: PRACTICAL
[60 MARKS]
Answer all questions
Create a folder on the desktop with your name and surname and save your work in that folder.
Question 5
[30]
Start VB application and do the following:
Create the following Graphical User Interface (GUI) and solve the problem below:
 Write a program that will verify whether the text boxes that have the label that has (*) are filled before
submitting the form.
 And if the user click SUBMIT button with one of the text containing (*) not filled display an error massage
box telling the user to fill in that space.
 And if all the text boxes are filled then display the following message box:
Question 6
[30]
Start vb and create the form below and rewrite the program below to make it operate in this form:
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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 The program bellow has function calcAverage that compute and return the average of three marks.
 And the function gradeMarks compute and return the following messages based on the following criteria.
 Passed with distinction if the value of the mark is greater than or equal to 75
 Passed if the value of the mark is greater than or equal to 50
 Supplementary if the value of the mark is greater than or equal to 40
 All marks below 40 it should return Failed.
 And the sub Display which display the marks and the computations of the functions.
 When the form load the program declare an integer array and initialize the memories of and array marks
the call the sub display to display the results on the list box.
Now to perfectly implement the program. Rewrite the program below in your vb and fill in the missing code from
number 1 to 9 on the program. Follow the instructions on the program.
Public Class Form1
'The beginning of the function calcAverage that will calculate(compute) and 'return the average of the marks
Function calcAverage(ByVal mark1 As Integer, ByVal marsk2 As Integer, ByVal mark3 As Integer) As Integer
'1. Implement the program that will compute and return average below.
End Function
'Beginning of function gradeMarks
Function gradeMarks(ByVal mark As Integer) As String
'2. Implement the code that will return
'Passed with distinction if the mark is greater than or equal to 75
'Passed if the mark is greater than or equal to 50
'Supplementary with distinction if the mark is greater than or equal to 40
'Failed if the mark is below 40
End Function
Sub Display(ByVal mark1 As Integer, ByVal mark2 As Integer, ByVal mark3 As Integer)
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
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'displaying the first mark and calling the function gradeMarks to display the 'grade of the mark on the list box
lsbDisplay.Items.Add("First mark: " + mark1.ToString() + " " + gradeMarks(mark1).ToString())
'3. display the second mark here and call the function gradeMarks to grade 'mark2 to display the mark on the list
box
'4. display the third mark here and call the function gradeMarks to grade 'mark3 to display the mark ‘on the list box
'5. display the average of the mark by calling the function calcAverage
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'6. declare an array marks of type integer which can load 3 values
'loading 25 in the first memory location of array marks
marks(0) = 25
'7. code to load 80 in the second memory location of array marks
'8. code to load the 65 in the third memory location of array marks
'9. calling the sub Display
End Sub
End Class
TOTAL MARKS: 100
Diploma: In Information Technology
Module: Programming 1A
Module code: PRG120
Page 14 of 14
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