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

Which log should an administrator check to troubleshoot network communications between vCenter Server and ESXi 6.x host?

1. /var/log/syslog.log

2. /var/log/hostd.log

3. /var/log/vpxa.log

4. /var/log/fdm.log

The correct answer is: /var/log/vpxa.log

To troubleshoot network communications between vCenter Server and ESXi 6.x host, checking the vpxa.log file is essential. The vpxa.log file is specifically associated with the vCenter Agent that runs on each ESXi host. This log records events related to the communication between vCenter Server and the ESXi host, including connection statuses, interactions, and any errors that may occur during this communication process. When diagnosing connectivity issues, the details within vpxa.log can provide insights into potential configuration problems, authentication issues, or network failures that may be affecting communication. Therefore, for an administrator working to resolve issues with network communications between the vCenter Server and an ESXi host, the information contained in vpxa.log would be the most relevant and useful. Other logs like syslog.log, hostd.log, and fdm.log serve different purposes. Syslog.log provides system-related logging for the ESXi host's overall operation, hostd.log focuses on the host agent managing user sessions and system states, and fdm.log is related to the fault domain manager, which is useful for HA (High Availability) configurations. While these logs may also contain useful information, they are not primarily focused on the communication details between vCenter and