最新的SOA C90.03免費考試真題

問題1

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 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%

B. 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%

C. 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%

D. 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%

正確答案: A

問題2

A company is planning to build and launch a new SaaS product that will be available for
use by the general public. It intends to build the service on-premise and then deploy it in a
public cloud. The company has the following set of four requirements for the
implementation of the new service:
1. The cloud service needs to exchange messages primarily by using HTTP methods and
other features provided by HTTP.
2. The cloud service needs to store highly structured data with potentially complex
relationships.
3. The cloud service needs to be deployed on a dedicated virtual server that can be
administered with a high level of control by the cloud consumer's own cloud resource
administrator.
4. The cloud service needs to be deployed with a minimal amount of integration testing.
For this project, the company has a very limited budget. The company is assessing the IT
resources that are offered by Clouds X and Y within the constraints of its limited budget.
Cloud X can offer an IaaS environment with very few proprietary characteristics that
includes a database that supports only no relational storage, as well as support for the
deployment and usage of REST services.

Cloud Y can offer a PaaS environment with a pre-configured virtual server that includes
native support for WSDL and SOAP, as well as a database that supports only relational
storage. The implementation of a new service within Cloud Y will require compliance to a
high level of proprietary characteristics.
As previously listed, the company has identified four specific implementation requirements
for its new cloud service. Which of the following statements correctly identifies how many of
the four requirements Clouds X and Y can directly fulfill?

A. Cloud X fulfills 0 out of 4 requirements. Cloud Y fulfills 4 out of 4 requirements.

B. Cloud X fulfills 2 out of 4 requirements. Cloud Y fulfills 2 out of 4 requirements.

C. Cloud X fulfills 3 out of 4 requirements. Cloud Y fulfills 1 out of 4 requirements.

D. Cloud X fulfills 1 out of 4 requirements. Cloud Y fulfills 3 out of 4 requirements.

正確答案: C

問題3

Cloud Service A is being made available on public Cloud X by Cloud Provider X via the
SaaS delivery model. Cloud Service A is hosted by Physical Server A that also hosts cloud
services being used by different cloud service consumers (and owned by different cloud
service owners).
Cloud Service Consumers A and B access Cloud Service A on a regular basis and
Physical Server A has been able to accommodate the resulting usage load After reviewing
the implementation environment for Cloud Service A.
Cloud Provider X determines it needs to enhance the ubiquitous access and multi-tenancy characteristics within this part of Cloud
X.

Which of the following statements accurately describes a solution that fulfills all of these
requirements?

A. The multi-device broker mechanism can be implemented to address ubiquitous access
requirements by broadening the range of cloud service consumers that can access Cloud
Service A.
The virtual server mechanism can be implemented to establish the multitenancy
capabilities of Cloud Service A.

B. The resource replication mechanism can be introduced to address ubiquitous access
requirements by broadening the range of cloud service consumers that can use Cloud
Service A via standard service replication. The virtual server mechanism can be
implemented to enable multi-tenancy via each service replication resulting from the
application of the resource replication mechanism.

C. The multi-device broker mechanism can be implemented to address ubiquitous access
requirements by broadening the range of cloud service consumers that can access Cloud
Service A.
The resilient computing mechanism can be implemented to establish the
multitenancy capabilities of Cloud Service A so that it will be able to resiliency
accommodate the additional cloud service consumer devices that will gain access to it.

D. The resilient computing mechanism can be implemented to address ubiquitous access
requirements by making Cloud Service A available to a broader range of cloud service
consumer devices, including desktops running Web browsers and various mobile devices.
The resource replication mechanism can be implemented to enable multi-tenancy within
the Cloud Service A implementation.

正確答案: A

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