Faculty of Computer Studies Course Code: M150A Course Title: DATA, COMPUTING and INFORMATION - A Tutor Marked Assignment Cut-Off Date: Total Marks: 60 Contents Question 1 ……………………..…………………………………..……… 2 Question 2 ……………………………..………………..………………… 3

Faculty of Computer Studies
Course Code: M150A
Course Title: DATA, COMPUTING and INFORMATION - A
Tutor Marked Assignment
Cut-Off Date: Total Marks: 60
Contents
Question 1 ……………………..…………………………………..……… 2
Question 2 ……………………………..………………..………………… 3
Question 3 ………………………………..………………..……………… 3

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Question1: (20 marks)
1. What is the difference between the internet and the web?
2. To have an effective communication you need to meet two conditions, mention these conditions.
3. What is the difference between painting packages and drawing packages?
4. What is a compression? What are the different techniques available?
5. Mention two disadvantages of reading and writing programs in machine language?
Question 2: (20 marks)
1. Use truth table to check if the following two Boolean expressions equivalent or not:

Boolean expression 1: A and Not (A or Not B)
Boolean expression 2: A and Not A and B
2. For the given numbers find their equivalent in the specified base. Show your steps. (11100101)2 = ( )10
(1012)10 = ( )8
3. If the image contains 800 x 600 pixels, with RGB coloring system, how many megabytes are required to store this image as a bitmap inside the computer?

Question 3: (20 marks)

1. Consider the flowchart diagram shown:










a. How many times will the loop be executed?
b. What is the output after all instructions have been executed? Draw a tracing table.
c. What will happen if the condition NOT(a>=15) is replaced by a>=10 or a<15?

2. The factorial function (symbol: !) means to multiply a series of descending natural numbers. Therefore, the factorial of N is the product of numbers from 1 to N). Based on your M150A knowledge:

a. Write an algorithm of the factorial N program.
b. Draw a flowchart to calculate the factorial of a number (N).
c. Find the output by a trace table for N = 6.