There are six questions in this assignment.  Answer all questions. You may use illustrations and diagrams to enhance your explanations.  

1. What is an application program? Explain how an application can be add/removed from a PC. (3 marks)
2. Suggest a suitable operating system (s) for the following activities: (3 marks)
   . Web Application Development
   . Multimedia Development
   . Database Management Identify the requirements on operating system for the above situations.
   Give reasons in support of your selection.
3. Explain the differences between followings: (4 marks)
   i. Cache Memory and Register
   ii. Ring topology and Star topology
   iii. Assembly Language and High Level Language
4. Explain how you will handle following problems (4 marks)
   (i) Your disk is not reading few files properly.
   (ii) The response time on your disk is slow.
   (iii) You need to change the video mode video mode of your monitor.
   (iv) You want to know the IP address of your computer system
5. Explain how you can protect your machine from computer viruses. Explain the process of removal of a computer virus from a virus infected machine. (5 marks)
6. Explain the followings:- (6 marks)
   (i) Table in MS-word.
   (ii) Mail-merge feature of MS-word
   (iii) Header and Footer
   (iv) Bullets and Numbering in MS-word.