Page 177 - Cloud Essentials

cloud services can grow or shrink to meet business demand.

Virtualization allows multiple operating systems to run simultaneously
on a single computing device. XaaS is a catchall term referring to any
computing service delivered over a network.

21. Which of the following are specific examples of IaaS? (Choose all that
apply.)

A. SLAs
B. Software code libraries

C. Cloud email accounts
D. Cloud storage

D. IaaS provides computing infrastructure services such as virtual
servers, virtual networks, cloud backup, and cloud storage.
A, B, and C are incorrect. SLAs describe levels of service that will
be provided to a customer, but they are not specific to IaaS. Software
code libraries are of use to software developers; this is PaaS, not IaaS.

Cloud email accounts are an example of SaaS, not IaaS.

22. Your organization uses on-premises servers to authenticate user logon
requests. You would like to authorize user access to cloud email
accounts using their local credentials. Which solution should you
employ?

A. Replicate local user accounts to the cloud.
B. Use identity federation.

C. Implement SaaS.

D. Re-create user accounts in the cloud.

B. Identity federation uses a single identity provider to authorize
user access to multiple software applications, including cloud apps.
A, C, and D are incorrect. Replicating user accounts to the cloud
means you are not using the on-premises user identities, which is

required in this scenario. SaaS provides end-user software services
over a network and has nothing to do with authentication or
authorization. Re-creating user accounts in the cloud is unacceptable;
the scenario clearly states that local user accounts are to be used for
authentication.

23. Relocating web content closer to users for quicker access is done using

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