(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) 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)
| main type | example |
| i | A |
| B | |
| ii | A B |
(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) (i) Define computer virus.
(i) List three types of computer network security breach.
(b) State five sources of computer network security breach.
(a) (i) What is a network cable?
(ii) State three types of cable used in networking
(b) Write the acronym VSAT in full.
(C) (i) Distinguish between an e-mail address and a website address.
(ii) List examples of each of: (1) e-mail address (2) website address
Symptoms of computer virus attack include:
I improved processing speeds; Il drive light coming up without apparent reason; Ill unexplainable printer activity; IV the disappearance or strange files appearance on the screen
- A. l, Il and Ill only
- B. I, Ill and IV only
- C. II, IIl, and IV only
- D. I, II, Ill and IV
The illegal copying and use of proprietary/copy righted software is called?
- A. hacking
- B. spamming
- C. hardware piracy
- D. software piracy.
Sorting of records is sufficient and a necessary condition for creating?
- A. random file
- B. indirect file
- C. sequential file
- D. indexed sequential file.
Which of the following is a temporary file that can be used only once and then discarded?
- A. Refresh file
- B. Master file
- C. System file
- D. Transaction file
Which of the following is true of a digital logic gate?
.
- A. It has at least two inputs but only one output.
- B. It has many outputs and inputs.
- C. It has at least one or more inputs but only one output.
- D. It has at least one input and two outputs
The decimal number 1024 in hexadecimal equivalent is?
- A. 24
- B. 400
- C. 3E8
- D. 8BB
The word bit refers to?
- A. the value zero or one
- B. the value zero of more
- C. central processing unit command
- D. central processing unit instructions.
The main advantage of intellectual property right is?
- A. maximization of profit
- B. discovering of brilliant persons
- C. discovering of sharing
- D. encouragement of innovations.
Which of the following is not a biometric data?
- A. finger prints
- B. password
- C. pattern of eye iris
- D. sound of the voice.
The initial screen that is displayed after a computer booting is referred to as?
- A. desktop
- B. interface
- C. software
- D. taskbar
The speed of data transfer in the computer can be determined in terms of ?
- A. protocol and bus speed
- B. bus speed and width
- C. bus speed and storage media
- D. bus width and storage media.
Converting 4B7\(_16\) to binary?
- A. 0100 1010 0111
- B. 0100 1011 0111,
- C. 0100 1000 0111,
- D. 0100 1100 0111
One megabyte is equivalent to?
- A. one million bytes
- B. two million bytes
- C. three million bytes
- D. four million bytes
In a database, a primary key is a field which contains?
- A. text only
- B. unique entries
- C. duplicate values
- D. numeric value only.
Principal uses of word processing software packages include:
I preparing deft articles for publication
ll pre- paring reports for top management
Ill preparing accounts
IV preparing organizations’ newsletter.
- A. I, III and IV only
- B. I, II and IV only
- C. II, III and IV only
- D. I, II, IIl, and IV.
A block of text that is marked by the tab key when the enter key is pressed can be referred to as?
- A. margin
- B. paragraph
- C. white space
- D. word wrap