EMC E20-020 Online Practice Questions and Exam Preparation

EMC E20-020 Online Questions & Answers

• Question 1:

  An organization is developing a cloud-native social-media website. The website will be written using elastic principles. When the website scales, it can add additional web, application and database instances to meet dynamic workload demand.

  Which additional resources will be consumed by replication as the database layer expands.

  A. Public IP addresses, CPU, and memory
  B. CPU, memory, and network traffic
  C. Network traffic, public IP addresses, and CPU
  D. Memory, network traffic, and public IP addresses
  B. CPU, memory, and network traffic

• Question 2:

  Which set of general criteria should the cloud architect consider when selecting a cloud management platform?

  A. Multi-tenancy, API version, and cross-platform awareness
  B. Hypervisor, hybrid cloud capabilities, and authentication
  C. Geographic region, networked storage, and Internet access
  D. Network storage, operating system drivers, and update services
  B. Hypervisor, hybrid cloud capabilities, and authentication

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  At a bare minimum, new clouds must be able to access all the physical and virtual infrastructure within an organization--Windows, AIX, or mainframe; hypervisors like vSphere, KVM, and Hyper-V; as well as public clouds including Microsoft

  Azure, Amazon Web Services (AWS), IBM SoftLayer, and more.

  References: http://www.bmc.com/blogs/3-fundamental-requirements-for-cloud- management-platforms/

• Question 3:

  A cloud architect has included a monitoring application in a cloud design to ensure infrastructure performance meets agreed-upon service levels. The application resides on a virtual appliance. The application vendor provides guidance for sizing the appliance.

  What will be part of the sizing calculations for the virtual appliance storage?

  A. Number of targetsMessage bus subscribers Data deduplication policies
  B. Number of segments Number of metrics Data deduplicaiton policies
  C. Number of targetsNumber of metrics Data retention policies
  D. Message bus subscribers Number of users Data retention policies
  C. Number of targetsNumber of metrics Data retention policies

• Question 4:

  Which type of storage is optimal for high performance and low latency applications?

  A. File
  B. Object
  C. Block
  D. Cluster
  C. Block

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  Block storage has been king of the hill for performance-centric applications. References: http://searchcloudstorage.techtarget.com/feature/How-an-object-store-differs- from-file-and-block-storage

• Question 5:

  An organization uses Microsoft Active Directory (AD) for service authentication in their private cloud. They want to use the same authentication source for services in the public cloud. External employees access services in both clouds and need to authenticate with AD.

  The organization wants to minimize and secure network traffic. Which solution will address these requirements?

  A. Connect the two clouds through IPsec VPNPlace AD controllers in the private cloud only
  B. Connect the two clouds through IPsec VPNPlace AD controllers in the private and public clouds
  C. Configure perimeter firewalls to allow AD traffic Place AD controllers in the private and public clouds
  D. External users connect with IPsec VPNPlace AD controllers in the private cloud only
  B. Connect the two clouds through IPsec VPNPlace AD controllers in the private and public clouds

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  References:

  https://blogs.technet.microsoft.com/keithmayer/2013/01/20/step-by-step-extending-on- premise-active-directoryto-the-cloud-with-windows-azure-31-days-of-servers-in-the-cloud- part-20-of-31/

• Question 6:

  An organization wants to have showback capability in their private cloud. Which cloud management platform component should be included in the cloud design to support this requirement?

  A. SSO
  B. Service catalog
  C. Metering application
  D. Monitoring application
  C. Metering application

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  Note: IT chargeback is an accounting strategy that applies the costs of IT hardware, software, cloud services or shared services to the business unit in which they are used. IT showback is similar to IT chargeback, but the prices are for informational purposes only and no one is billed. References: http://searchaws.techtarget.com/definition/IT-chargeback-showback

• Question 7:

  What are general design considerations for inter-cloud links?

  A. Internet connection, network service provider adjacent to the cloud provider, and application behavior
  B. Router and load balancer session synchronization, Internet connection, and network service provideradjacent to the cloud provider
  C. Application behavior, router and load balancer session synchronization, and Internet connection
  D. Network service provider adjacent to the cloud provider, application behavior, and router and load balancersession synchronization
  B. Router and load balancer session synchronization, Internet connection, and network service provideradjacent to the cloud provider

• Question 8:

  A cloud architect is designing a hybrid cloud for an organization. A requirement for this environment is that the private cloud user credential be trusted by both cloud provisioning APIs. Which type of authentication will meet this requirement?

  A. Federated authentication
  B. Asymmetric encryption
  C. Symmetric encryption
  D. Shared-key authentication
  A. Federated authentication

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  A federated identity in information technology is the means of linking a person's electronic identity and attributes, stored across multiple distinct identity management systems. References: https://en.wikipedia.org/wiki/Federated_identity

• Question 9:

  An organization wants to deploy applications that can programmatically alter network behavior. In addition, they want to deploy additional network services in real-time.

  Which cloud-management component should be included in the design to support this requirement?

  A. Hypervisor Element Manager
  B. Software-Defined Network Controller
  C. Network Management Controller
  D. Virtual Switch Manager
  B. Software-Defined Network Controller

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  An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets. In effect, the SDN controller serves as a sort of operating system (OS) for the network. By taking the control plane off the network hardware and running it as software instead, the controller facilitates automated network management and makes it easier to integrate and administer business applications. References: http://searchsdn.techtarget.com/definition/SDN-controller-software-defined- networking-controller

• Question 10:

  A cloud architect has included an SDS controller in a cloud design. Which requirement(s) will support the addition of this component to the design?

  A. Monitor storage performance and manually provision storage resources
  B. Provide the ability to programmatically deploy virtual storage resources
  C. Switch array functionality from active/passive to active/active
  D. Provide a redundant front-end for object storage
  B. Provide the ability to programmatically deploy virtual storage resources

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  Software-defined storage (SDS) is an evolving concept for computer data storage software to manage policybased provisioning and management of data storage independent of the underlying hardware. Software-defined storage definitions typically include a form of storage virtualization to separate the storage hardware from the software that manages the storage infrastructure. References: https://en.wikipedia.org/wiki/Software-defined_storage