This computer science problem involves algorithmic thinking and programming concepts. The solution below explains the approach, logic, and implementation step by step.
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4.1.1 Functions of an Operating System Step 1: Process (CPU) management The OS creates, schedules, and terminates processes. It allocates CPU time to processes using scheduling algorithms. Step 2: Memory management The OS allocates and deallocates memory to processes. It handles virtual memory, paging, and segmentation. Step 3: File management The OS manages file creation, deletion, access, and storage on secondary devices. Step 4: Device management The OS controls I/O devices through drivers and buffers data transfer. Step 5: Security and protection The OS ensures data security, user authentication, and resource protection. 4.1.2 Characteristics of an Operating System Step 1: Multitasking The OS allows multiple programs to run concurrently by switching between them. Step 2: Multi-user support The OS enables multiple users to access the system simultaneously. Step 3: Reliability The OS recovers from errors and provides fault tolerance. Step 4: Portability The OS can run on different hardware platforms. Step 5: Efficiency The OS optimizes resource utilization for better performance. 4.1.3 Examples of an Operating System Windows, Linux, macOS, Android, iOS, Unix