EMC E20-020 Online Practice Questions and Exam Preparation

EMC E20-020 Online Questions & Answers

• Question 31:

  An architect is designing the compute resource pools for a cloud. As part of the deliverables, the architect has included the standard specifications for the physical servers to be used. The organization has provided estimates for future growth but has concerns about whether these estimates are accurate. What should be included in the design to address these concerns?

  A. A monitoring application and procedures for pool expansion
  B. A chargeback application and orchestration workflows to auto-scale pools
  C. A metering application and orchestration workflows to auto-scale pools
  D. A configuration management application and procedures for pool expansion
  A. A monitoring application and procedures for pool expansion

• Question 32:

  An organization wants to deploy a block storage in the cloud using a storage array that is accessible through the iSCSI protocol. The hosts support iSCSI.

  Why would network segmentation be included in the design to support this requirement?

  A. Secure all traffic between the storage array and the hosts
  B. Enable CHAP between the array and hosts
  C. iSCSI traffic is not supported on networks with other types of traffic
  D. Enable LUN masking capabilities of the array
  D. Enable LUN masking capabilities of the array

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  LUN masking is a further constraint added to LUN zoning to ensure that only devices authorized to access a specific server can access the corresponding port. A logical unit number (LUN) is a unique identifier that designates individual hard disk devices or grouped devices for address by a protocol associated with a SCSI, iSCSI, Fibre Channel (FC) or similar interface. LUNs are central to the management of block storage arrays shared over a storage area network (SAN). References: http://searchvirtualstorage.techtarget.com/definition/LUN-masking

• Question 33:

  During an assessment for an organization's cloud design, a cloud architect discovers that developers will be creating applications for tenants. The applications will self-scale based on an internal trigger. The architect has included cloud management platform (CMP) components in the design that will support this requirement. To meet this requirement, what else should the cloud architect consider?

  A. Mechanisms exist for assigning IP addresses and updating DNS
  B. Mechanisms exist for changing host CPU over-commitment ratios
  C. A CMP account with elevated privileges exists that can be shared with developers
  D. Component APIs are located on an isolated network
  B. Mechanisms exist for changing host CPU over-commitment ratios

• Question 34:

  If the metering tool supports multi-tenancy and integrates with the cloud portal, what should be considered?

  A. Only permit local user access for security reasons
  B. Metering tool should not integrate with tenant authentication
  C. Metering server access should be allowed for all tenants
  D. Role-based access for security reasons
  D. Role-based access for security reasons

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  The cost of collecting the metrics, and the balance between the value they provide and the impact on application operation. If metering code cannot be incorporated into existing components or roles, and you need to increase the number of instances of components or roles just to carry out metering, you might increase costs beyond the savings or income available from metering. References: https://msdn.microsoft.com/en-us/library/dn589796.aspx

• Question 35:

  In addition to the operating system, what other components does the consumer manage in an IaaS cloud service model?

  A. Application, data, storage, and physical networking
  B. Data, middleware, application, and runtime
  C. Runtime, physical servers, application, and middleware
  D. Middleware, runtime, hypervisor, and application
  B. Data, middleware, application, and runtime

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  In the case of IaaS the computing resource provided is specifically that of virtualised hardware, in other words, computing infrastructure. IaaS clouds often offer additional resources such as a virtual-machine disk-image library, raw block

  storage, file or object storage, firewalls, load balancers, IP addresses, virtual local area networks (VLANs), and software bundles. Figure: Cloud-computing layers accessible within a stack

  Incorrect:

  Not A: not Physical networking not C: Not physical servers. Not D: Not Hypervisors.

  References: http://www.interoute.com/what-iaas

• Question 36:

  A cloud architect is designing a distributed block storage solution that will support application HA. The solution will consist of 10 nodes with all SAS devices. There are five racks available in the data center. Each rack has a single top-of-rack access layer switch with sufficient bandwidth to the aggregate layer. Each node will have multiple connections to the local top-of-rack switch.

  The architect wants to provide a design that has the fewest number of storage pools maximizing the number of fault domains. How should the storage pools be designed?

  A. One pool with SSD nodes located in one rackOne pool with all SAS nodes located in a different rack
  B. One pool with 50% SSD and 50% SAS nodes distributed equally across five racks
  C. One pool with SSD nodes distributed equally across five racksOne pool with all SAS nodes distributed equally across five racks
  D. One pool with 50% SSD and 50% SAS nodes located in one rackOne pool with 50% SSD and 50% SAS nodes located in a different rack
  C. One pool with SSD nodes distributed equally across five racksOne pool with all SAS nodes distributed equally across five racks

• Question 37:

  A cloud architect discovers that an organization wants to deploy 500 consumer applications initially and grow to over 2000 consumer applications in three years. These applications will use block storage only. How does the information impact the cloud management platform infrastructure sizing?

  A. Influences proxy server data storage requirements
  B. Influences CDN data storage requirements
  C. Influences federation server data storage requirements
  D. Influences monitoring server storage requirements
  C. Influences federation server data storage requirements

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  Incorrect:

  Not B: A content delivery network or content distribution network (CDN) is a globally distributed network of proxy servers deployed in multiple data centers.

• Question 38:

  Which benefits might be realized by designing a separate infrastructure pool to host network functions?

  A. Reduced public IP address consumption, reduced troubleshooting time, and reduced consumerinfrastructure load
  B. Reduced troubleshooting time, reduced consumer infrastructure load, and enhanced security
  C. Reduced troubleshooting time, enhanced security, and reduced public IP address consumption
  D. Reduced consumer infrastructure load, enhanced security, and reduced public IP address consumption
  D. Reduced consumer infrastructure load, enhanced security, and reduced public IP address consumption

• Question 39:

  Which aspect of the project definition does the cloud design scope provide?

  A. Broad directions for the project
  B. Boundaries of what the project should and should not include
  C. Sales figures that must be met when designing the project
  D. Specific features or functions that must be included in the project
  D. Specific features or functions that must be included in the project

• Question 40:

  An organization wants to deploy a service catalog in a private cloud. What requirements are met by using a

  service catalog?

  A. Ability for administrators to manage multi-tenancy
  B. Ability for users to measure service performance
  C. Ability for users to aggregate service logs
  D. Ability for administrators to attach storage pools
  B. Ability for users to measure service performance

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  Benefits of implementing and maintaining a service catalog include allowing an enterprise to track and manage metrics that represent the utilization of services and service-related traits, such as those associated with service supply and demand. References: https://en.wikipedia.org/wiki/Service_catalog