Question: A vSphere administrator is tasked with ensuring high availability for critical virtual machines. Which vSphere feature should the administrator implement to automatically restart VMs on another host in case of a host failure?
Answer: The administrator should implement vSphere High Availability (HA). vSphere HA provides automatic restart of virtual machines on other available hosts within a cluster when a host failure is detected. This ensures minimal downtime for critical applications.
Question: A virtual machine is experiencing performance issues with high disk latency. What are two potential causes of this issue that the administrator should investigate?
Answer: Two potential causes for high disk latency in a virtual machine are: 1) Insufficient storage I/O resources on the underlying datastore. This could be due to high I/O load from other VMs sharing the same storage or limitations of the storage hardware itself. 2) Incorrect virtual disk provisioning type. Using thin provisioning for a heavily utilized VM can lead to performance degradation as the virtual disk needs to be expanded frequently. Switching to thick provisioning might improve performance in such cases.
Question: An organization needs to restrict network communication for a specific group of virtual machines to only allow traffic on specific ports. Which vSphere security feature can be used to achieve this?
Answer: vSphere Distributed Firewall can be used to restrict network communication for a specific group of virtual machines. It allows administrators to create granular firewall rules based on various criteria, including source and destination IP addresses, ports, and protocols, effectively controlling network traffic at the vNIC level.
Question: A vSphere administrator is unable to migrate a running virtual machine using vMotion. What is one common prerequisite that must be met for a successful vMotion?
Answer: One common prerequisite for a successful vMotion is that the virtual machine's virtual hardware version must be compatible with the ESXi hosts in the target cluster. If the target host has an older version of clapgeek exam ESXi that does not support the virtual hardware version of the VM, the vMotion operation will fail. Ensuring compatibility by upgrading the target hosts or downgrading the VM's virtual hardware (if possible and acceptable) is crucial.
Remember to study the official VMware documentation and practice with a lab environment to thoroughly prepare for the 2V0-21.23 exam. Good luck!
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