Question 1 a. What is a Backup? [1] b. Why it is necessary to make a Backup Your Data? [5] c. How Are Backups Created? [5] d. Differentiate onsite and offsite backups. [4] Question 2 List different types of information system and their features. [10] Question 3 A company has shifted from the manual system to a computerised system. But within a short period of time the new computerised system failed. What could the common reasons be for is failures and propose some preventative measures? [10] Question 4 Identify and explain the unique features of e-commerce technology. [10] Question 5 Explain the IF STATEMENT in Microsoft excel, with its function, syntax, usage and example with a screen shot. [5]