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Question No. 1 [CLO 3, Level 3] [Marks: 10] Imagine you are an IT officer at a small business. Apply your knowledge of computer threats to identify and explain how three different types of threats (e.g., user, hardware, data) could impact the organization. Question No. 2 [CLO 2, Level 2] [Marks: 10] A database is a collection of data or information organized so that it can easily be accessed, managed, updated, and retrieved. Computerized databases are much more potent than noncomputerized databases because users can easily search and reorganize data in hundreds of ways. Explain what Database Management System (DBMS) is. Summarize its main advantages and disadvantages, and applications where a DBMS is commonly used. Question No. 3 [CLO 2, Level 2] [Marks: 10] Today's world revolves around the internet, which is a network of networks that connects billions of devices across the world. Organizations of all sizes use networks to connect their employees' devices and shared resources such as printers. Classify the different types of network topologies. Explain the advantages and disadvantages of each topology in your own words. Question No. 4 [CLO 1, Level 1] [Marks: 10] An operating system is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's language. Without an operating system, a computer is useless. What is an operating system? List and briefly describe various types of operating systems with their details.