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Chapter 4 Review Questions 1-5

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Chapter 4 “IT Infrastructure: Hardware and Software” Review Questions 1-5

1. What are the components of IT infrastructure?
• Define information technology (IT) infrastructure and describe each of its components.
IT infrastructure consists of the shared technology resources that provide the platform for the firm’s specific information system applications.
Major IT infrastructure components include computer hardware, software, data management technology, networking and telecommunications technology, and technology services.

2. What are the major computer hardware, data storage, input, and output technologies used in business? * Computer Hardware: Mainframes, midrange computers, PC’s, workstations, and supercomputers. * Data Storage: Magnetic disk, optical disc, magnetic tape and storage networks. * Input devices: Keyboards, computer mice, touch screens (including those with multitouch), magnetic ink and optical character recognition devices, pen-based instruments, digital scanners, sensors, audio input devices, and radio-frequency identification devices. * Output devices: Display monitors, printers, and audio output devices.
• List and describes the various type of computers available to businesses today. * Mainframes are a large-capacity, high-performance computer that can process large amounts of data very rapidly. * Midrange computers are servers computers are specifically optimized to support a computer network, enabling users to share files, software, peripheral devices (such as printers), or other network resources. * PC’s are desktop or laptop machines. * Workstations are desktop machines with powerful mathematical and graphic capabilities. * Supercomputers are sophisticated, powerful computers that can perform massive and complex computations rapidly.
• Define the client/server model of computing, and describe the

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