ITPEC IP April 2022 Question 93

Topic: System StrategyAlso asked in October 2019

Which of the following is an appropriate description of “cloud computing”?

a)A communication protocol of the Internetb)A service model for providing computer resourcesc)A method of software development that can flexibly support changes in the specificationd)A standard of electronic data exchange that is used in electronic commercial transactions

Explanation

A service model for providing computer resources — cloud computing supplies IT resources as a service over the network.

With cloud computing, users obtain servers, storage, platforms or applications from a provider over the Internet on demand, scale them up or down and usually pay for what they use, without owning the equipment. By what is provided, the service models are SaaS (software), PaaS (platform) and IaaS (infrastructure).

Answer (b)

Why not others:

•(a) — cloud services are reached through Internet protocols such as HTTP and TCP/IP, but cloud computing is not itself a protocol
•(c) — a development method that flexibly handles changes in the specification is agile development
•(d) — a standard for exchanging electronic business documents between companies is EDI

Key rule: Cloud computing is a way of providing and using IT resources as services; SaaS, PaaS and IaaS name the layer that is provided.

System Strategy · AI-written, may contain errors

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