Online Access Free C90.03 Exam Questions

Cloud Provider X has deployed a virtualization environment in Cloud X comprised of
Physical Server A hosting Virtual Servers A and B.
Cloud Provider X implements Cloud
Service A on Virtual Server A and makes it available to Cloud Service Consumer A, which
interacts with Cloud Service A by sending and receiving messages (1, 2).
Cloud Provider Y has deployed a virtualization environment comprised of Physical Server B
hosting Virtual Servers C and D.
Virtual Server C is made available to Cloud Service
Consumer B, which interacts with Virtual Server C (3,4) in order to prepare for the
deployment of a new cloud service that will be used internally by Cloud Provider Y to
process data obtained from Cloud Service A.

Cloud X is administered by a group of organizations and makes Cloud Service A available
only to cloud service consumers from that group. Cloud Consumer Z belongs to one of the
organizations within this group. Cloud Y and Cloud Consumer Z are owned by the same
organization. Which of the following statements provides a valid scenario that accurately
describes the involvement of cloud deployment models, cloud delivery models, roles and/or
boundaries? (Note that the correct answer represents one of multiple valid scenarios that
can exist.)

• A.Cloud X is based on the community cloud deployment model. Cloud Service A is based
  on the SaaS delivery model. Cloud Y is based on the private cloud deployment model.
  Virtual Server C is being offered as part of the IaaS delivery model. A cloud resource
  administrator working for Cloud Consumer Z uses Cloud Service Consumer B to access
  Virtual Server C.
  Cloud Consumer Z' s trust boundary encompasses Cloud Service
  Consumers A and B, as well as Cloud Service A and Virtual Server C.
  The organization
  that owns Cloud Consumer Z will be the cloud service owner of the new cloud service that
  will be deployed on Virtual Server C.
• B.Cloud X is based on the community cloud deployment model. Cloud Service A is based
  on the SaaS delivery model. Cloud Y is based on the private cloud deployment model.
  Virtual Server C is being offered as part of the IaaS delivery model. A cloud resource
  administrator working for Cloud Consumer Z uses Cloud Service Consumer B to access
  Virtual Server C.
  Cloud Consumer Z is the cloud service owner of Cloud Service A.
  Cloud Consumer T's organizational boundary encompasses Cloud Service Consumers A and B.
  Cloud Consumer Z's trust boundary encompasses Cloud Service A and Virtual Server C.
• C.Clouds X and Y are based on the community cloud deployment model. Cloud Service A
  is based on the SaaS delivery model. Virtual Server C is being offered as part of the PaaS
  delivery model. A cloud resource administrator working for Cloud Provider X uses Virtual
  Server A to access the Cloud Service A implementation Cloud Consumer T s trust
  boundary encompasses Cloud Service Consumers A and B, Cloud Service A and Virtual
  Server C.
  The organization that owns Cloud Consumer Z is the cloud service owner of
  Cloud Service A.
• D.Cloud X is based on the hybrid cloud deployment model. Cloud Service A is based on
  the SaaS delivery model. Cloud Y is based on the community cloud deployment model.
  Virtual Server C is being offered as part of the IaaS delivery model. A cloud resource
  administrator working for Cloud Consumer Z uses Cloud Service Consumer A to access
  Cloud Service A.
  Cloud Consumer Z's organizational and trust boundaries encompass
  Cloud Service Consumers A and B, Cloud Service A and Virtual Server C.

Cloud Service Consumer A invokes Cloud Service A from Cloud X (owned by Cloud
Provider X) (1). To fulfill the request from Cloud Service Consumer A, Cloud Service A
needs to invoke Cloud Service B that resides on Cloud Y (owned by Cloud Provider Y) (2).
After completing its processing, Cloud Service B sends a response to Cloud Service A (3).
Cloud Service A verifies the response and then finally sends its response to Cloud Service
Consumer A (4).

The guaranteed availability of the Cloud Service A implementation is 95% and the
guaranteed availability of the Cloud Service B implementation is 95%. Which of the
following statements accurately describes the actual availability that Cloud Service
Consumer A can receive based on the described scenario?

• A.Because Cloud Service Consumer A's response message is processed by two separate
  cloud services, the combined availability increases as follows:
  1 - (1 - 0.95) X (1 - 0.95) = 0.9975 or 99.75%
• B.Because Cloud Service A acts as both a cloud service and cloud service consumer in
  order to process Cloud Service Consumer B's request message, Cloud Service A forms a
  dependency on Cloud Service B.
  As a result, the combined availability decreases, as follows:
  0.95 X 0.95 = 0.9025 or 90.25%
• C.As a result of the dependency formed by Cloud Service Aon Cloud Service B, the
  combined availability decreases significantly as follows:
  (0.95 X 0.95) - 0.1 = 0.8025 or 80.25%
• D.Cloud Service Consumer A benefits from redundant cloud service implementations,
  thereby increasing the guaranteed availability as follows:
  1 - (1 - (0.95 - 0.1)) X (1 - (0.95 - 0.1)) = 0.9775 or 97.75%

Cloud Provider X has deployed a virtualization environment in Cloud X comprised of
Physical Server A hosting Virtual Servers A and B.
Cloud Provider X implements Cloud
Service A on Virtual Server A and makes it available to Cloud Service Consumer A, which
interacts with Cloud Service A by sending and receiving messages (1, 2).
Cloud Provider Y has deployed a virtualization environment comprised of Physical Server B
hosting Virtual Servers C and D.
Virtual Server C is made available to Cloud Service
Consumer B, which interacts with Virtual Server C (3,4) in order to prepare for the
deployment of a new cloud service that will be used internally by Cloud Provider Y to
process data obtained from Cloud Service A

Cloud Consumer Z and Cloud Provider X belong to the same organization. Cloud Provider
Y is a third-party organization. Which of the following statements provides a valid scenario
that accurately describes the involvement of cloud deployment models, cloud delivery
models, roles and/or boundaries? (Note that the correct answer represents one of multiple
valid scenarios that can exist.)

• A.Cloud X is based on the private cloud deployment model. Cloud Service A is based on
  the SaaS delivery model. Cloud Y is based on the private cloud deployment model. Virtual
  Server C is being offered as part of the IaaS delivery model. A cloud resource administrator
  working for Cloud Consumer Z uses Cloud Service Consumer B to access Virtual Server C.
  Cloud Consumer Z is the cloud service owner of Cloud Service A.
  Cloud Consumer T s organizational boundary encompasses Cloud Service Consumers A and B.
  Cloud Consumer T s trust boundary encompasses Cloud Service Consumers A and B, Cloud
  Service A and Virtual Server C.
• B.Cloud X is based on the private cloud deployment model. Cloud Service A is based on
  the SaaS delivery model. Cloud Y is based on the public cloud deployment model. Virtual
  Server C is being offered as part of the IaaS delivery model. A cloud resource administrator
  working for Cloud Consumer Z uses Cloud Service Consumer B to access Virtual Server C.
  Cloud Consumer Z is the cloud service owner of Cloud Service A.
  Cloud Consumer Z's organizational boundary encompasses Cloud Service Consumers A and B.
  Cloud Consumer T s trust boundary encompasses Cloud Service Consumers A and B, Cloud
  Service A and Virtual Server C.
• C.Cloud X is based on the private cloud deployment model. Cloud Service A is based on
  the SaaS delivery model. Cloud Y is based on the public cloud deployment model. Virtual
  Server C is being offered as part of the IaaS delivery model. A cloud resource administrator
  working for Cloud Consumer Z uses Cloud Service Consumer B to access Virtual Server C.
  Cloud Consumer Z' s trust boundary encompasses Cloud Service Consumers A and B,
  Cloud Service A and Virtual Server C.
  The organization that owns Cloud Consumer Z is the cloud service owner of Cloud Service A.
• D.Cloud X is based on the private cloud deployment model. Cloud Service A is based on
  the SaaS delivery model. Cloud Y is based on the community cloud deployment model.
  Virtual Server C is being offered as part of the IaaS delivery model. A cloud resource
  administrator working for Cloud Consumer Z uses Cloud Service Consumer A to access
  Cloud Service A.
  Cloud Consumer T s organizational and trust boundaries encompass
  Cloud Service Consumers A and B, Cloud Service A and Virtual Server C.