Page 179 - Cloud Essentials

B. Local IT personnel must monitor cloud solutions to ensure

optimal performance. Underperforming cloud solutions could be
because of sluggish network connections or overburdened cloud
providers, and this reduces the value offered by cloud computing.
A, C, and D are incorrect. Setting limits on OPEX is not the
responsibility of the IT staff. The creation of virtual machines can be
important with cloud solutions but not as important to business value as

optimal performance. Removing inactive virtual machines can benefit
the business because of less cost, but removing active virtual machines
cannot.

26. Which of the following statements is true?

A. PaaS is used to create web services.
B. PaaS is used by end users.

C. SaaS is used by software developers.

D. Applications cannot be developed in the cloud.

A. PaaS is used by software developers to create and test
applications. These applications typically take the form of web
services.
B, C, and D are incorrect. PaaS is used by software developers, not
end users. SaaS is used by end users, not software developers.
Applications can be developed and tested in the cloud; this is precisely

what PaaS is for.

27. What benefits are derived from PaaS?
A. OPEX instead of CAPEX

B. Cloud backup

C. Rapid application development
D. Elasticity

C. PaaS provides reusable software libraries, databases, virtual

machines, storage, and so on, to software developers to decrease the
amount of time it takes to create and test software applications.
A, B, and D are incorrect. Shifting CAPEX to OPEX is a benefit of
all cloud models, not just PaaS. Cloud backup falls under IaaS, not
PaaS. Elasticity is a benefit of all cloud models, not just PaaS.

28. Which application should be migrated to the cloud for initial cloud

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