VMware vSphere: Optimize and Scale plus Troubleshooting Fast Track [V7] Quiz Questions and Answers

What is vCenter window to receive the heartbeat from esxi host?

Answer :
  • 60 sec

Explanation :

If vCenter Server does not receive the UDP heartbeat message, it treats the host as not responding. ESX/ESXi host send heartbeats every 10 seconds and vCenter Server has a window of 60 seconds to receive the heartbeats. This behavior can be an indication

During vMotion Source ESXi Host is unable to connect to Destination ESXi Host. What can be the reason?

Answer :
  • Check the vMotion IP.

Explanation :

The vSphere vMotion migration failed because the destination host did not receive data from the source host on the vSphere vMotion network. You verify that your vSphere vMotion network settings and physical network configuration are correct.

What is reinitialization of vCenter Server Database?

Answer :
  • vCenter Server database resets it to the default configuration.
  • erases all data in the database.

Explanation :

A reinitialization of the vCenter Server database resets it to the default configuration, and it is as if the vCenter Server database were newly installed. Reinitializing the database permanently erases all data in the database.

The size and rate of the vCenter Server database growth can affect vCenter Server performance. What is the name of this data?

Answer :
  • SEAT

Explanation :

The size and rate of the vCenter Server database growth can affect vCenter Server performance. This data is called SEAT (Statistics, Events, Alarms, Tasks). The database increases in size because of this collected data.

What happens if ping to the VM is failed?

Answer :
  • Troubleshoot the guest operating system first and then troubleshoot the VM. Finally, troubleshoot the ESXi host.

Explanation :

If the ping is unsuccessful, take a top-down troubleshooting approach to identify possible causes. Troubleshoot the guest operating system first and then troubleshoot the VM. Finally, troubleshoot the ESXi host.

What is basis of heartbeating datastore selection?

Answer :
  • datastore accessible to maximum no. of hosts
  • minimize the likelihood that the datastores are backed by the same LUN or NFS server.

Explanation :

Heartbeating datastores selection is made to maximize the number of hosts that can access a heartbeating datastore and minimize the likelihood that the datastores are backed by the same LUN or NFS server.

What happens when vCenter database is full?

Answer :
  • You cannot log in to vCenter Server.
  • VMware VirtualCenter Server service may start and stop immediately.
  • Microsoft SQL Event log reports the error.

Explanation :

When the vCenter Server database if full: You cannot log in to vCenter Server, VMware VirtualCenter Server service may start and stop immediately, and Microsoft SQL Event log reports the error.

The heartbeat network is the management network. If the vSphere HA cluster is already configured as a vSAN cluster, the virtual SAN network is used as the heartbeat network.

Answer :
  • TRUE

Explanation :

The heartbeat network is the management network. If the vSphere HA cluster is already configured as a vSAN cluster, the virtual SAN network is used as the heartbeat network.

Determine where growth is occurring in the vCenter Server database?

Answer :
  • both

Explanation :

VCDB database. This is the most common area and is not specific to any database type Transactional logs. This is not as common and is specific to Microsoft SQL databases

When a VM is accessible on disk but corrupted in such a way that vCenter Server cannot read the content. In this state, no configuration can be returned for a VM. Then VM is?

Answer :
  • orphaned

Explanation :

An invalid VM is accessible on disk but corrupted in such a way that vCenter Server cannot read the content. In this state, no configuration can be returned for a VM.