Organization A has been expanding and, as a result, is outgrowing the processing capacity
of its on-premise Service A implementation. It is determined that this is due to usage
thresholds of Service A and complex data processing limitations in Database A.
The diagram depicts Organization A's current on-premise environment, where Service
Consumers A.
B and C attempt to access Service A at the same time. Service Consumer A
successfully accesses Service A, which then successfully retrieves the requested data (1).
Service Consumer B successfully accesses Service A, but due to the complex data
structure, the request for the data times out and fails (2). Finally, Service Consumer C
attempts to access Service A, but is rejected because Service A is unable to accept more
concurrent requests.

Organization A is required to continue using its on-premise Service A implementation, with
the exception of Database A, which does not need to remain on-premise. Database A is
dedicated to Service A and is comprised of relational data. Which of the following
statements provides a solution that uses cloud-based IT resources to solve the
performance limitations of Service A and Database A?

• A. A failover system can be implemented in a hybrid architecture comprised of
  Organization A's existing on-premise environment and a public cloud environment. The
  failover system would span both environments so that when Service A is unable to process
  request messages from Service Consumers A, B or C, the failover system can
  automatically route messages to a redundant implementation of Service A residing in the
  public cloud. Similarly, when Database A is unable to process a data access request from
  Service A.the failover system can automatically route this request to a redundant
  implementation of Database A, also residing in the public cloud.
• B. A cloud bursting solution can be implemented, whereby a redundant copy of Service A
  is implemented within a public cloud. This cloud-based, redundant implementation of
  Service A is referred to as Cloud Service A.
  A copy of Database A is also implemented within the cloud and both the on-premise and cloud-based copies of Database A are
  redesigned to be non-relational in order to improve data access performance. Service A
  continues to act as a first point of contact for Service Consumers A, B and C.
  An automated scaling listener is deployed so that when Service A's thresholds are met,
  requests are automatically routed to Cloud Service A.
• C. The state management database and resource replication mechanisms can be
  implemented to establish redundant implementations of Service A and Database A in both
  on-premise and cloud environments. Using resource replication, a cloud-based duplicate of
  Service A (Cloud Service A) will be established in a public cloud and will remain in synch
  with Service A via regular replication cycles. Using the resource replication mechanism
  together with the state management database mechanism allows for Database A to be
  dynamically replicated in an independent state management database that has redundant
  implementations in both on-premise and cloud environments. The state management
  database can be further optimized to support non-relational data to improve data access
  performance.
• D. None of the above

Cloud Provider X (which owns Cloud X) deploys two physical servers (Physical Servers A
and B) and two databases (Databases A and B). Virtual Servers A and B are hosted by
Physical Server A and Ready-Made Environments A and B are hosted by Virtual Server B.
Virtual Servers C and D are hosted by Physical Server B.
Cloud Service Consumer A regularly accesses Virtual Server D in order to test and deploy a new cloud service that
was developed on-premise by the cloud consumer organization operating Cloud Service
Consumer A.
Cloud Service Consumer B (operated by a different cloud consumer organization) has been regularly accessing Ready-Made Environment A in order to develop
and deploy a different new cloud service.

Cloud X is a private cloud that, to-date, has been set up within the cloud provider company
to provision IT resources free of charge to internal cloud consumers, via PaaS and IaaS
delivery models. The cloud consumers that have been operating Cloud Service Consumers
A and B represent different IT departments within the company that have been working
separately on the development of new cloud services. Cloud Service Consumer A has
been accessing Virtual Server D to make necessary configurations and administration
settings for the upcoming deployment of a new cloud service that was previously
developed outside of Cloud X.
Cloud Service Consumer B has been accessing Ready-
Made Environment A to develop and now deploy a different new cloud service.
Cloud Provider X (which is represented by a separate IT department dedicated to
governing and administering Cloud X) determines that it will need to introduce three
specific enhancements to Cloud X in order to accommodate both upcoming cloud services.
First, it needs to add a way to charge cloud consumers for the usage of cloud services.
Secondly, it needs to add a way for new cloud services to be automatically scaled. Finally,
it needs to add a way for a cloud consumer to be automatically notified when a cloud
service encounters runtime loads that exceed its allocated usage threshold.
Which of the following statements accurately describes a solution that fulfills all three
identified requirements?

• A. The state management database mechanism together with the virtual server mechanism
  and the automated scaling listener mechanism can be implemented to address the
  requirement for cloud service usage charges to be tracked and recorded, for cloud services
  to be automatically scaled, and for notifications to be issued when cloud service loads
  exceed thresholds.
• B. The pay-for-use monitor mechanism can be installed to address the requirement for
  cloud service usage to be tracked and recorded. The automated scaling listener
  mechanism can be implemented to address both the requirement for cloud services to be
  automatically scaled and for notifications to be issued when cloud service loads exceed
  thresholds.
• C. The pay-for-use monitor mechanism can be implemented to address the requirement for
  cloud service usage charges to be tracked and recorded, for cloud services to be
  automatically scaled, and for notifications to be issued when cloud service loads exceed
  thresholds.
• D. The pay-for-use monitor mechanism can be installed to address the requirement for
  cloud service usage charges to be tracked and recorded. The automated scaling listener
  mechanism can be implemented to address the requirement for cloud services to be
  automatically scaled. The multi-device broker mechanism can be implemented to address
  the requirement for notifications to be issued when cloud service loads exceed thresholds.

Cloud Provider Y owns Cloud Y, which provides a set of cloud services, virtual servers, and
one physical server. Cloud Services A and B are hosted on Virtual Server A, which is
hosted by Physical Server A.
Physical Server A also hosts Virtual Server B, which hosts redundant implementations of Cloud Services A and B for load balancing purposes. Cloud
Service Consumer A is accessing Cloud Service A located on Virtual Server A.
Cloud Service Consumer B is accessing Cloud Service B located on Virtual Server B.
Cloud Service Consumers A and B are both owned by Cloud Consumer X.
Cloud Consumer X has recently complained that Cloud Service A is becoming increasingly
unreliable. Cloud Provider Y launches an investigation that reveals that Virtual Server A
has been crashing sporadically due to successful malicious intermediary attacks where
malicious service agents have been inserting harmful data into messages sent by Cloud
Service Consumer A to Cloud Service A.

Which of the following statements describes a solution that can mitigate the malicious
intermediary attacks that have been occurring on Virtual Server A - and - can further help
prevent the same types of attacks from occurring on Virtual Server B?

• A. Cloud Provider Y can implement the identity and access management mechanism for
  Virtual Servers A and B by physically deploying this mechanism on Physical Server A and
  then further implementing the resource replication mechanism to propagate the identity and
  access management system across Virtual Servers A and B.
• B. Cloud Provider Y can implement the cloud-based security group mechanism that
  establishes a logical trust boundary that encompasses Virtual Servers A and B.
• C. Cloud Provider Y can implement the failover system mechanism by requiring that
  redundant copies of all service agents be deployed. This will reduce the chances of any
  one service agent performing malicious actions at runtime.
• D. Cloud Provider Y can implement the encryption and digital signatures mechanisms to
  protect the contents of messages from being augmented by malicious service agents.