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EMC IT-as-a-Service Expert Exam for Cloud Architects Sample Questions:

1. Refer to Scenario 7.
"A web hosting company has been growing steadily over the past year. Their single data center is at maximum capacity for power, space and cooling, and their physical infrastructure is also running at capacity. They are evaluating the feasibility of obtaining another data center in a remote location to enable further growth.
One of the web hosting company's eCommerce customers notifies them that they are launching an enormous holiday sale, beginning in a few weeks. They expect utilization of their virtual server farm to double or triple for the next three to six months. The web hosting company cannot deploy the needed resources in a new data center in time for the sale. They opt to purchase services from a cloud service provider using a pay-as-you-go model.
Over the next two weeks, Layer 2 connectivity is established between the two sites. The web hosting company's IT staff works with the CSP to configure the necessary physical and virtual infrastructure. All traffic to the public cloud is routed through the private data center, across the Layer 2 connection. A local load balancer is deployed in the private data center. Orchestration tools are configured to burst the service into the public cloud automatically when utilization reaches 80%."
During the first day of increased usage, the network link between your data center and the CSP fails due to an external problem. You need to design an alternate solution to prevent degradation in the service offering.
Which solution would provide the best performance for the end user?

A) Change the configuration of the local load balancer and retain the IP addresses on the servers in the public cloud
B) Deploy a global load balancer and change the IP addresses for the servers in the public cloud
C) Deploy a global load balancer and retain the IP addresses on the servers in the public cloud
D) Change the configuration of the local load balancer and change the IP addresses for the servers in the public cloud

2. An enterprise's IT department is transitioning to ITaaS. The IT department is developing a service management methodology. They are uncertain about how much of the measurement data should be stored, and for how long. One consideration is the trade-off between storage cost and data granularity.
What would you, the cloud architect, recommend as a best practice?

A) Keep more granular data than just peaks and averages. This allows a higher level of monitoring at reasonable cost, given deduplication and compression.
B) Keep all raw data, given that storage costs are relatively low.
C) Store as much monitoring data as possible given cost constraints. This enables future diagnosis and offers visibility into SLA compliance.
D) Keep only peaks and averages for a longer period of time. This minimizes query time, protection, and recovery issues.

3. A regional accounting and analytics firm headquartered in Seattle, WA has built a profitable business selling a portfolio of financial services to several large local enterprises. The company's flagship applications process large volumes of enterprise-internal financial data within IT operations.
Recently, the firm has established small remote offices in Hong Kong, Seoul, and Beijing to grow in the Far East.
The business is critically dependent on its data processing capabilities, and recognizes the need for ITaaS transformation. They are seeking guidance on a suitable IT governance model.
What type of model should you recommend, and why?

A) Distributed by geography, to address different regional regulations
B) Hybrid by location and application, to eliminate silos and promote growth
C) Federated by application, to ensure creation of customized services for each application
D) Centralized at headquarters, to maximize security and minimize compliance risk

4. You are working with an independent software vendor to deploy a new SaaS-based application into an organization's private cloud. The application supports REST and SAML binding for authentication. Which cloud single sign-on solution would best fit the needs of this SaaS application?

A) OAuth
B) LDAP
C) SCIM
D) OpenID

5. Refer to Scenario 3.
A US company has deployed web services within a private cloud. They wish to provide additional web services elastically and distribute them around the globe using a public cloud provider.
The web services have a dependency on a database resource in the private cloud. The web services are deployed through a service catalog as a standardized service offering, which includes an intrusion prevention system that periodically polls a central management server for security updates. The IPS management server is located within the private cloud.
The web services collect highly regulated personal health information about consumers who are
located around the world.
Which solution would you recommend to best support the web service high availability and minimize service network latency for the consumer?

A) Implement a QoS policy that provides a higher priority to http traffic.
B) Implement a Layer 7 firewall within the public cloud to filter out unnecessary traffic.
C) Use a content delivery network to distribute static web content.
D) Implement a global load balancing service as a front-end for the web services.

Solutions: