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The main argument for infrastructure as a service over higher models is

  • A.very much less operational work
  • B.better security entirely by default
  • C.control over configuration and versions
  • D.a lower running cost in every single case

Answer: C

Correct answer: control over configuration and versions

Infrastructure as a service is chosen when the specifics matter - a particular kernel or database version, an unusual network arrangement, a licence tied to the machine, a compliance requirement about where and how software runs. The other three options are claims the model does not support: it means more operational work, not less, and neither better security nor lower cost follows automatically from it.

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