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Chapter 7, Problem 1RQ
Program Description Answer

“PaaS” is the cloud computing service model that offers the software developer to access the operating systems for testing.

Hence, the correct answer is option “B”.

Expert Solution & Answer
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Explanation of Solution

PaaS:

  • In this service, the users can access the “computing platform” like operating system, programming language compilers, development tools, etc.
  • The users can access required platform for required number of days.
  • Here, the third party provider offers hardware and software tools which is required for the developer to develop the apps.
  • PaaS provider hosts all the hardware and software on their own infrastructure.

Explanation for incorrect options:

IaaS:

  • IaaS is Infrastructure as a Service where the users can access the virtual machines, network servers, firewalls, virtual bundles, etc.
  • The users can access any infrastructure for required number of days.

Hence, the option “A” is wrong.

SaaS:

  • SaaS is Software as a Service where the users can access application software and databases in the cloud.
  • The users can access any kind of software for required number of days.

Hence, the option “C” is wrong.

XaaS:

XaaS is Anything as a Service is the collective term where the user can access anything as a service.

Hence, the option “D” is wrong.

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