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

1. A start-up cloud provider is evaluating potential resource allocation models to use for reserving client resources. Their service offering targets software development and testing.
Which model would be most suitable?

A) Fixed
B) Pay-as-you-go
C) Guaranteed
D) Reserved

2. An IT organization is currently 80% virtualized and the CIO is planning for the transition to ITaaS. The organization has already experienced significant savings due to virtualization. Senior executives are concerned that ITaaS requires additional software licenses and additional headcount, both at significant cost.
How can the CIO convince senior management of the savings potential with ITaaS?

A) Explain to senior management that there will not be any additional skill sets required for the ITaaS initiative
B) Propose that the CMDB and orchestration tool will decrease the cost of service management
C) Explain that the service catalog can be a mechanism for controlling cost by influencing LOB/consumer behavior through showback/chargeback
D) Show how the service catalog and orchestration tools can be viewed in the context of "cost to serve" to provide immediate business value

3. Refer to Scenario 7.
-- Exhibit -
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%.
-- Exhibit -
To test the functionality of the new infrastructure, a load simulator is used to increase utilization on the servers. At 80% utilization, the orchestration tools provision the required resources in the public cloud. However, the utilization on the private cloud resources continues to increase, while the utilization on the public cloud resources remains at 0%.
What is the most likely cause of this problem?

A) The global load balancer is not being updated with the new service information
B) The local load balancer is not being updated with the new service information
C) The wrong VLANs are configured across the network link
D) The wrong subnets are configured across the network link

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

5. Refer to Scenario 5.
Refer to the exhibit.

An innovative high-end graphics and multimedia firm with a substantially virtualized IT infrastructure wishes to consider cloud enablement next, as part of its logical progression to ITaaS.
As a first step, the firm plans to transition one relatively low-risk service -- daily backup -- to a public CSP. The existing backup strategy involves array-based cloning, followed by backup of the clones with dedicated servers. The system is functional; however, since the backup target device is due for a technology refresh, the firm is open to alternatives.
In evaluating alternatives, the key consideration is the ability to meet backup windows for daily incremental backups during the work week.
As advisor to this firm, you have conducted a quick assessment of the candidate applications and storage involved in daily backups. Relevant details are presented in the exhibit.
-- Exhibit -
Another evaluation point is the completion time for weekly full backups to the cloud service provider. Which would have the most favorable impact on full backup speed?

A) Target-based deduplication
B) Use of thin provisioning for volumes
C) Low capacity growth rate for volumes
D) Source-based deduplication

Solutions: