(a) Explain the Von Neumann architecture of a computer with the help of a diagram.
(b) Define computer virus. How do they infect and spread in a computer system? Explain at least three categories of viruses on the basis of their mode of existence. Give three examples of computer viruses.
(c) What are Screen Savers? Write steps to set-up a screen saver for your computer.
(d) What are Macros? Mention the uses of macros. Write steps for recording and running a macro with the help of an example.
(e) Write the steps involved in creating a presentation using PowerPoint to include the following tasks and by selecting the corresponding slide layout(s):
(i) To include a title for the presentation
(ii) To include a chart and text on the same slide
(iii) Bulleted lists
(iv) Media clip and some text
(v) Text over some objects
(vi) Text in the form of columns
(a) What are Document Templates? List their uses. Explain the format of at least three commonly used document templates and write the steps to use them in your document.
(b) What do you understand by formatting a disk? Write steps for formatting a disk and explain the various options for formatting a disk.
(a) Differentiate the following:
(i) Volatile and Non-volatile memory
(ii) Magnetic disk and Magnetic tape
(b) List all the layers in OSI reference model. Also, explain the functions and services offered by each and every layer.
(a) What is an operating system? Mention the types of operating systems and explain any two of them in detail.
(b) Explain the two different ways by which you can connect to the network.
(c) Explain any two different ways of protecting the Word-document.