VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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After creating a custom ESXi firewall rule, what action should be taken if the rules do not appear in the vSphere Web Client?

  1. Load the new rules using esxcli network firewall reload.

  2. Load the new rules using esxcli network firewall refresh.

  3. Verify the entries in the XML file and then reboot the ESXi host.

  4. Remove the ESXi host from the inventory and add it back.

The correct answer is: Load the new rules using esxcli network firewall refresh.

The appropriate action to take when custom ESXi firewall rules do not appear in the vSphere Web Client is to use the command to refresh the firewall configuration. When custom rules are added, such changes might not automatically be reflected in the user interface due to how the ESXi host manages its firewall state. By executing the command to refresh the firewall, the system will re-read the current configuration and load your new rules, ensuring they are available in the vSphere Web Client. Refreshing the configurations allows the firewall service on the ESXi host to recognize and apply any new rules that have been defined. This command does not require a host reboot and is a more efficient solution for ensuring that the new rules are recognized immediately. While reloading could imply a more thorough reinitialization process, it does not specifically address the immediate requirement of updating the active list of rules displayed in the interface. Verifying entries within the XML file and rebooting the host, or removing and re-adding the host to the inventory, are actions that could unnecessarily complicate the resolution of the issue, leading to more downtime or configuration complexity. Thus, the refresh command is the preferred method for ensuring the vSphere Web Client reflects the new firewall configurations properly.

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