(a) (i) Define computer virus.

(i) List three types of computer network security breach.

(b) State five sources of computer network security breach.

(a) Convert the following numbers to be stated bases:

(i) 125.625, to binary

(ii) 111011.10011, to octal

(b) Given that X = 11011011 and Y= 11101101,

(i) construct the truth table for X, Y Z;

(ii) draw the logic gate of X, Y = Z

(iii) state the value of Z.

(a) An electronic book is made up of 500 pages and there are 16 lines of 24,000 bits line on each page.

Complete the space it will occupy on a computer in megabytes.

 (b) Give an example of auxiliary storage.

(c) In the table below:

(i) List the two main types of computer software.

(ii) Give two examples under each in 4(c)i)

(a) State two BASIC programming keywords.

(b) Write the following equations in BASIC format:

(i) I = PRT/100: (ii) Y= AX\(_2\) +BX+C; (iii) Y= MX + C

(c) Write a BASIC program that accepts mass and volume of a liquid as input from the User.

The program should compute.and display the density of the liquid. Density = mass volume

(a) Using a word processor, typeset the following pas sage with 12 point Tahoma font: Elements of Data Processing.

The main purpose of this subject is to provide the required knowledge and business programming skill for you to effectively use data processing system and manage the data processing department of an organization.

Basic concepts of data processing, required computer systems, personnel, tools for developing data processing application and basic programming skills are also covered in this study material. This will be achieved through the following: AIMS Students should be able to:

- Explain data processing concepts, system, personnel and tools;

- Describe data processing techniques;

- Acquire skills for developing, implementing and managing data processing system.

(b) Format the passage as stated below:(i) Heading of the page: apply a 16 point font-size in upper case form; bold, centralize and underline it.

(ii) Body of the passage: change the line spacing to 1.5; align, justify.

(i) Sub-heading of the passage: bold and italicise; use text highlight colour Gray 50%

(iv) Create a bulleted list type of your choice for the text under "Aim" and format as follows: explain the data processing concepts, systems, personnel and tools; acquire skills for developing, implementing and managing data processing system; describe data processing techniques. Change the page orientation to landscape.

(d) Using the header tool, insert your full name and index number.

(e) Save the work as PROCESSING in the folder created and print.

2.(a) using a presentation program, create four blank slides with a suitable design template.

Insert a footer showing your full name and index number with font size 20 points

(b) Prepare each slide as follows.

SLIDE 1:

Type VEGETABLE as the title and format it as follows

SLIDE 2:

(i) Type the sub-title as "Health Advantages of Vegetables and format it as follows: Font type: -Arial Black; size -44

Font type: -Arial, style -bold: size-96; colour blue

(ii) Insert the following content: Vegetables enhance your body wellness. Here are some of the potential health benefits

1. Reduce the risk of heart diseases including heart at tack and stroke.

2. Protect against certain type of cancer.

3. Reduce the risk of developing kidney stones.

SLIDE 3:

(i) Type sub-titles as "STATISTICS"

(ii) Insert the following tables:

 SLIDE 4:

(i) Type sub-title as "Nutrient Chart"

(ii) Create a pie-chart using the tabulated data in SLIDE 3.

(c) Save the work as CHART in the folder ceated and print.

3. Use a graphical application program to design a simple wedding invitation card as given in figure 1 using the listed specifications.

(a) Two wedding rings as logo. Format as shown in figure 1.

(b) THE BRIDE AND THE GROOM

Font style: Dutch 801 x BdBT

Size: 24 pt. The families of Cordially request the Size 24 pt pleasure of

Font style - Free script to the Size 31.351 pt

Wedding ceremony Font style Blernard MT Condensed Size 54.351 pt

Between Font style-Freestyle script Size 35.777 pt

Aishat Abosede Chinyere

Font style - Blackadder ITC & Size-35.647 pt

Musha Amuda Chukwuemeka Venue Font style- Arial Size 23.55 pt

Reception follows immediately Font style- Ar At the same venue RSVP font style- Arial Size 18 pt

Font style- Arial Size 37.787 pt

On Font style Arial Saturday 31st January, 2013 @ Wazobia Hall, 7, Freedom Way Abuja. Font style - Arial Size 24 pt  By 11.00 a.m. prompt Size 20.607 pt

(c)Using the footer tool, insert your full name and index number.

(d) Save the work as CARD in the folder created and print.