Chapter 5, Problem 1RQ

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IT infrastructure:

• Technical perspective includes applications in software and physical devices that acts as a platform of shared technology resources to run the complete organisation and the company’s specific IT applications...

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Eras in IT infrastructure evolution and its distinguishing characteristics:

The evolution of IT infrastructure can be explained in Five Stages as mentioned above:

• From the year 1959 to the present, the era can be described as General – Purpose mainframe & minicomputer era. It is characterised by a centralised processing mainframe and performs certain decentralised and departmental computing via networked minicomputers through its thousands of terminals.
• The period from 1981 saw the utilisation of standalone desktop computers and office productivity tools and is known as the Personal computer era...

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Web Server:

Web server manages the web pages requested and the software delivers the page from the storage to the user’s computer.

Application Server:

Application Server is the software that is the link to manage th...

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Moore’s Law and the Law of Mass Digital Storage

• Moore’s law mentions that the quantity of very low-cost manufacturing components on a chip has doubled every year. This doubling rate was revised to once in every 2 years.
• Law of Mass Digital Storage describes that the amount of stored information is doubling every year and the cost of storing digital informed is reducing exponentially at 100 percent a year...

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Network economics, declining communications costs, and technology standards affecting IT infrastructure:

• Network economics:
  • Metcalfe’s law describes that a liner growth in a network’s participant count has an exponential growth effect in the value of the network.
• Declining communication costs:
  • The utilization of communications, internet usage has exponential...