A program, or software, consists of a series of related instructions, organized for a common purpose, that tells the computer what tasks to perform and how to perform them. An application, or app, sometimes called application software, consists of programs designed to make users more productive and/or assist them with personal tasks. Other programs, often called tools or utilities, enable you to perform maintenance-type task usually related to managing devices, media, and programs used by computer and mobile devices. An operating system is a set of programs that coordinates all the activities among computer or mobile device hardware 1.1 Describe how an operating system interacts with applications and hardware. Discuss the steps involved. (10) 1.2 Identify and describe key features of productivity applications. (5) Mobile operating system is the heart of smart phone. Various mobile operating systems like Android, iOS, Windows Phone, Blackberry, Tizen, Sailfish OS, Ubuntu Touch, Firefox OS are available. Each of them has some common as well as unique specialized features. 1.3 Discussed their various features for Android, iOS, Windows Phone and Blackberry and Tizen like App support, OS updates, voice assistance, cloud services, map, voice assistance, security and reliability, market share, customization rights and camera settings. (25) QUESTION 2 (25 MARKS) ENTERPRISE STORAGE Enterprise hardware allows large organizations to manage and store data and information using devices intended for heavy use, maximum efficiency, and maximum availability. The availability of hardware to users is a measure of how often it is online. Enterprise storage often uses Fibre Channel (FC) technology as the interface that connects the devices to the network because FC technology has much faster transmission rates than SCSI and other previously discussed interfaces. 2.1 Using practical examples e.g. diagrams, describe and discuss Network Attached Storage (SAN) and Storage Area Network (SAN). (15) 2.2 Using examples differentiate between a smart card and magnetic stripe card. Which one do you prefer and why?