An administrator is troubleshooting network communications between the vCenter Server and the ESXi 6.x host. Which log shows the interaction events between these components?

/var/log/syslog.log captures general operating system and kernel-level events on the ESXi host, not vCenter-specific interaction events.

/var/log/hostd.log records activity of the hostd daemon, which handles direct host management API calls, not the vCenter Agent communication channel.

The file /var/log/vpxa.log is written by the VMware vCenter Agent (vpxa), which is the daemon running on each ESXi host responsible for relaying commands and state information between the host and vCenter Server. All management interactions initiated by vCenter, such as task execution and inventory updates, are logged here, making it the correct log to review for vCenter-ESXi communication issues.

/var/log/fdm.log is written by the Fault Domain Manager and contains events related to vSphere HA operations, not general vCenter-ESXi communication.