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

1. Refer to Scenario 1 below.
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 address problem (a)?

A) Divide the "application developer" and "big data" workloads into separate resource pools
B) Standardize on a subset of offerings to meet the needs of most developers and minimize the number of customization options
C) Communicate appropriate SLAs that are realistic given the demand and resources available
D) Offer additional, larger resource platform options to the developers

2. You are the IT Manager of a health care company. You have decided to move to the public cloud and are evaluating various public cloud providers.
What characteristic would the best public cloud provider have, and why?

A) Uses the same firewall technology as your current ISP, to avoid any incompatibility issues
B) Be a small company, so you will have more flexibility to negotiate with them
C) Have peering relationships with your current ISP, to provide the most direct path between company and public cloud
D) Be PCI compliant, to avoid any future penalties to the company

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%."
After viewing the weekly trending analysis, you notice that the cost of resources allocated does not correspond to resource utilization. And the billing statement from the cloud service provider (CSP) reflects higher than expected charges.
What is the most effective action to take to rectify the discrepancy?

A) Contact the CSP representative and renegotiate the terms of service of the contract
B) Terminate the contract with the CSP and sign a contract with a public provider that better integrates with the solution
C) Contact the CSP representative and negotiate a fixed cost model
D) Verify that the orchestration engine is configured to trigger the collapse of the underutilized resources

4. A small company has been using a public cloud IaaS provider for several months. During this time the company has seen significant growth in revenue. This growth has triggered a surge in hiring, which has forced the company to repeatedly purchase additional services at premium cost from their CSP.
The company has leased a data center and started designing a cloud infrastructure to deploy a private cloud environment. The underlying hypervisor technology they chose is different than that of the CSP. Once the initial infrastructure has been implemented, they will transition to a hybrid cloud model. New services will only be deployed in the private cloud.
A new CIO has just been hired, but has little experience with cloud computing. You are a Cloud Architect who has been asked to consult on several areas of concern.
The first service must be deployed in the private cloud within the next month. The CIO does not want to rely solely on the existing single sign-on solution hosted in the public cloud, because network disruption between the clouds would impact user access.
What is the best option for an interim single sign-on solution that can be replaced once the private cloud is fully implemented?

A) Identity Provider
B) OAuth
C) Public Key Infrastructure
D) SAML

5. 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) Federated by application, since it ensures autonomy for each application team and promotes customer satisfaction
C) Distributed by geography, since it enables localized control and lock down of sensitive data
D) Hybrid, since it is the best approach during rapid growth by acquisition

Solutions: