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VMware VDCD510 Exam Questions
VMware Certified Advanced Professional - Datacenter DesignExam (Page 9 )

Updated On: 17-Feb-2026
Page 9 of 57
PDF with 279 Questions

You are considering the correct option for a VMware HA cluster admission control policy. The system is a hosted platform, and for business reasons, reservations will not be used. Which of the following statements is correct?

  1. The only admission control policy possible is based on failover host.
  2. A default slot size will be used in place of reservations.
  3. The percentage-based admission control policy should be used.

Answer(s): B

Explanation:

An admission control policy tells VMware HA how to calculate the resources it needs to reserve for a cluster. It uses a combination of memory and CPU reservation configuration or, if no configuration exists, a default low reservation. Chapter 4, The Importance of vMotion, VMware HA, and Fault Tolerance



You are designing a VMware HA cluster. In vSphere 5, VMware HA will take cluster resource fragmentation into account and ask DRS to defragment the cluster, if required.

  1. True
  2. False

Answer(s): A

Explanation:

In VMware vSphere 5, this HA functionality is fully automated and does not use any specific custom settings with regard to reservations or slot sizes. VMware HA functions can request DRS to migrate workloads across the system in multiple rounds of vMotion tasks. This can help defragment the cluster and restart VMs that have been affected by a failed host. Chapter 4, The Importance of vMotion, VMware HA, and Fault Tolerance



You are designing a VMware HA cluster. Due to project requirements, it has been agreed that the admission control policy is based on the number of host failures tolerated per cluster. However, because there are a number of small web servers and one large database server with large reservations, the slot size has been manually configured. What is the impact of this configuration?

  1. DRS will not automatically defragment the resources in the event of a failure.
  2. DRS will automatically defragment the resources in the event of a failure.
  3. DPM cannot be used in this configuration.

Answer(s): A

Explanation:

With the rebuild of vSphere 5 HA functionality, it is possible for VMware HA to ask DRS to defragment a cluster if systems are not going to restart correctly. However, this functionality is disabled if the default or automatic slot size calculation is changed using the override setting. In situations like this, from a design perspective, a percentage-based admission control policy would be more beneficial. Chapter 4, The Importance of vMotion, VMware HA, and Fault Tolerance



You are designing a vSphere 5 HA cluster. One of the requirements is to ensure full collection of log files in the event of an issue. Which of the following is correct? (Choose two)

  1. By default, ESXi logs are not persistent following reboots.
  2. The logs should be forwarded to a syslog server or vCenter dump collector.
  3. The ESXi logs are persistent through reboots.

Answer(s): A,C

Explanation:

By default, ESXi hosts do not store logs persistently through reboots. To ensure full visibility of logs, a syslog and/or vCenter dump collector is required for compliance and root cause analysis.
Chapter 4, Management/Platform Design



You are designing a VMware HA cluster as part of a solution for a large enterprise. One of the specific requirements is to remove the risk of impact to a DRS outage due to possible fragmentation of resources leading to performance issues. Which of the following statements is correct?

  1. VMware HA will automatically protect DRS in the event of a HA event.
  2. A virtual vCenter cannot be used in this solution.
  3. vCenter heartbeat would need to be implemented to protect the vCenter and dependent services DRS uses for this level of protection.

Answer(s): C

Explanation:

The vCenter can be protected by VMware HA but is a requirement for HA configuration. The vCenter is also a requirement for DRS, DPN, network vMotion, and vMotion. For cases in which functionality such as this cannot tolerate outages of several minutes in the event of a major event, VMware has a product called vCenter heartbeat. It can give true application protection without an outage to the vCenter application.
Chapter 4, The Importance of vMotion, VMware HA, and Fault Tolerance






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