EMC E20-018 Online Practice Questions and Exam Preparation

EMC E20-018 Online Questions & Answers

• Question 11:

  A hypervisor running several virtual servers crashes, and all virtual servers are restarted on another hypervisor.

  When the applications restart, they replay log files to bring data up to date.

  Which type of consistency does this situation represent?

  A. Eventual consistency
  B. Offline consistency
  C. Crash consistency
  D. Application consistency
  D. Application consistency

• Question 12:

  Why is the need for host-based agents a disadvantage in a block storage virtualization environment with on-of band virtualization appliance?

  A. Capacity limitations
  B. Management complexity
  C. Performance concerns
  D. Functional limitations
  C. Performance concerns

• Question 13:

  What would you describe is a key characteristic of cloud platform as a Service (PaaS)?

  A. Direct control over the underlying infrastructure
  B. Cloud hosted integrated development environment
  C. Home-grown programming environment
  D. Cloud hosted, in house built tools
  B. Cloud hosted integrated development environment

• Question 14:

  What is the usual approach that IT departments have when addressing performance issues during the Virtualize phase of the Cloud Maturity Model?

  A. Reactive
  B. Selective
  C. Proactive
  D. Investigative
  A. Reactive

• Question 15:

  You are designing a VDC that uses converged networking to support both LAN and SAN traffic. FCoE is used exclusively for storage access. The access and aggregation layer switches that have been chosen support both 10 and 40 Gigabit Ethernet and Data Center Bridging.

  You have determined that the traffic between the access layer and aggregation layer switches is:

  -

  Average SAN (FCoE) A. Three 40 Gb/s ports and six 10 Gb/s ports
  B. Four 40 Gb/s ports
  C. Three 40 Gb/s ports and four 10 Gb/s ports
  D. Four 40 Gb/s ports and eight 10 Gb/s ports

  A. Three 40 Gb/s ports and six 10 Gb/s ports

• Question 16:

  A large company with multiple heterogeneous arrays would like to take advantage of the performance simplified management benefits of storage virtualization. They have a data center transformation pain that includes producing power and cooling at a high priority.

  Which storage virtualization method would meet their requirements?

  A. Network-based storage tiering
  B. Vertical storage tiering
  C. Server-based storage tiering
  D. Horizontal storage tiering
  B. Vertical storage tiering

• Question 17:

  Refer to the exhibit.

  

  You are expanding the compute layer of a VDC, and need to add more access layer switches to provide connectivity to the hypervisors. However, there are no available ports on the two aggregation layer switches to accommodate the uplink connections from the new access layer switches, and all uplinks are active and operating at 95% of capacity.

  Your design must satisfy all of the following requirements:

  -Expand the access layer

  -Maintain the same configuration as the existing environment

  -

  Maintain the performance of the existing environment The CIO has authorized you to purchase additional aggregation layer switches if needed. What should you recommend?

  A. Purchase two new aggregation layer switches. Aggregate them into a virtual switch. Connect the new access layer switches to them.
  B. Purchase one new aggregation layer switch. Connect the new access layer switches to it.
  C. Purchase one new aggregation layer switch. Aggregate it with the existing switches. Redistribute all access layer switches across all aggregation layer switches.
  D. Purchase two new aggregation layer switches.Connect the new access layer switches to them.
  A. Purchase two new aggregation layer switches. Aggregate them into a virtual switch. Connect the new access layer switches to them.

• Question 18:

  You are using virtual (thin) provisioning to reduce the amount of physical storage that is initially required for an implementation.

  On the storage array, you configure a pool that contains 10 TB of physical storage and then define several LUNs that total 50 TB. These LUNs are presented to several hypervisor clusters. Virtual Machines are subsequently created using a

  thick format for the virtual hard disks.

  What is the maximum capacity that can be allocated for VM hard disks in this configuration?

  A. 10 TB
  B. 50 TB
  C. 60 TB
  D. 100 TB
  A. 10 TB

• Question 19:

  What provides fault tolerance and load balancing for FC traffic?

  A. Multipathing software
  B. NIC Teaming
  C. HBA Teaming
  D. Fibre Channel Initiator
  A. Multipathing software

• Question 20:

  Refer to the exhibit.

  

  You are expanding the compute layer of a VDC, and need to add more access layer switches to provide connectivity to the hypervisors. However, there are no available ports on the two aggregation layer switches to accommodate the uplink connections from the new access layer switches, and there is no available funding to purchase additional aggregation layer switches. The active uplinks are operating at 95% of capacity.

  What can be done to expand the access layer and not impact the performance of the existing environment?

  A. Aggregate the aggregation layer switches into a virtual switch. Reduce the number of uplink connections from each access layer switch by 50%.
  B. Aggregate the access layer switches into a virtual switch. Reduce the number of uplink connections to each aggregation layer switch by 50%.
  C. Aggregate the datacenter core switches. Reduce the number of uplink connections from each access layer switch by 50%.
  D. Aggregate the datacenter core switches. Reduce the number of uplink connections from each aggregation layer switch by 50%.
  A. Aggregate the aggregation layer switches into a virtual switch. Reduce the number of uplink connections from each access layer switch by 50%.