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

1. A hosting company has experienced a sudden increase in customer interest and wishes to implement ITaaS. They are now hosting online shopping applications for several retail computer and electronics companies.
Developers in the customer companies use their own internal credentials and have the ability to publish applications and changes to their stores. Shoppers access these stores using a variety of mobile applications and web browsers.
What should be addressed when migrating to ITaaS and implementing a service catalog for the retail and electronic companies?

A) Integration of multiple hypervisors
B) On-demand resource pool creation
C) Integration with different authentication systems
D) Support for several different CMDB systems

2. A health care applications software company has been growing rapidly by acquiring several similar companies, which are based in other states.
IT is now struggling to provide services for developing, testing and supporting multiple application teams. For each application, customer support must frequently handle sensitive electronic medical records data that is subject to Federal compliance. No formal standards or policies have been established across application teams relative to sensitive data.
With the goal of ITaaS transformation, senior management seeks to establish IT governance. What would you recommend for a governance model, and why?

A) Centralized, since security and compliance concerns are relatively homogeneous across the enterprise
B) Distributed by geography, since it enables localized control and lock down of sensitive data
C) Hybrid, since it is the best approach during rapid growth by acquisition
D) Federated by application, since it ensures autonomy for each application team and promotes customer satisfaction

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

4. A company is actively moving business applications to an ITaaS model. The IT department increasingly acts as an adviser, proposing the best fit from either private cloud capability or public cloud suppliers.
The company's finance department is considering their financial applications for cloud as they increasingly need more capacity and better performance at the end of the month, which the current infrastructure cannot deliver. The financial application architecture is three tier (presentation, middleware, and database).
The IT security team has suggested that with appropriate controls the presentation layer could be deployed in a public cloud but the middleware and database layers cannot.
What would be the best approach to enabling service elasticity in this scenario?

A) IaaS deployment in the hybrid cloud
B) IaaS deployment in the community cloud
C) IaaS deployment in the private cloud
D) IaaS deployment in the public cloud

5. Refer to Scenario 1.
"
An IT department is offering 50 Service Offerings in their service catalog to meet all the application developers' needs. Many of the variants have a very small number of associated instantiations. A "big data" platform is offered and being actively utilized by a team of data scientists.
All services are sourced from within the private cloud. The developers are able to customize the platform's compute, storage, protection and network configuration upon instantiation. They can also provision additional resources after the initial instantiation through an upgrade service within the catalog. Because of the culture of the organization, no chargeback mechanism is implemented.
Within six months, IT experiences these problems:
(a). Developers are complaining of poor and inconsistent performance
(b). Resource utilization has far exceeded expectations
(c). The environment has become very complex
(d). Since the resource pools are shared throughout the organization, IT has been unable to identify usage patterns, making capacity planning very difficult"
What can the IT department do to resolve problem (c)?

A) Standardize on a subset of offerings to meet the needs of most developers and minimize the number of customization options
B) Offload the "big data" IaaS platform to a public service provider
C) Provide separate resource pools for the application developers and the data scientists and manage the pools separately
D) Implement a showback mechanism to influence consumer behavior when choosing specific resources

Solutions: