Review Questions
1. What is IT infrastructure and what are its components?
Define IT infrastructure from both a technology and a services perspective.
• Technical perspective is defined as the shared technology resources that provide the platform for the firm’s specific information system applications. It consists of a set of physical devices and software applications that are required to operate the entire enterprise.
• Service perspective is defined as providing the foundation for serving customers, working with vendors, and managing internal firm business processes. In this sense, IT infrastructure focuses on the services provided by all the hardware and software. IT infrastructure is a set of firm-wide services budgeted by management and comprising both human and technical capabilities.
List and describe the components of IT infrastructure that firms need to manage.
Students may wish to use Figure 5-10 to answer the question. IT infrastructure today is composed of seven major components.
• Internet Platforms – Apache, Microsoft IIS, .NET, UNIX, Cisco, Java
• Computer Hardware Platforms – Dell, IBM, Sun, HP, Apple, Linux machines
• Operating Systems Platforms – Microsoft Windows, UNIX, Linux, Mac OS X
• Enterprise Software Applications – (including middleware), SAP, Oracle, PeopleSoft, Microsoft, BEA
• Networking/Telecommunications – Microsoft Windows Server, Linux, Novell, Cisco, Lucent, Nortel, MCI, AT&T, Verizon
• Consultants and System Integrators – IBM/KPMG, EDS, Accenture
• Data Management and Storage – IBM DB2, Oracle, SQL Server, Sybase, MySQL, EMC Systems
2. What are the stages and technology drivers of IT infrastructure evolution?
List each of the eras in IT infrastructure evolution and describe its distinguishing characteristics.
Five stages of IT infrastructure evolution include:
• General-purpose mainframe and minicomputer era (1959 to present):
• Personal computer era (1981 to