Exam 2V0-21.23 topic 1 question 36 discussion

B - Question is asking for microsecond PTP does Microsecond NTP does Millesecond https://blogs.virtualmaestro.in/2020/04/11/timekeeping-in-vsphere-7-0-ntp-or-ptp/

Answer should be B for PTP for microsecond accuracy. NTP is not accurate to that level

Selected Answer: B You must enable Precision Time Protocol (PTP) to ensure that the time of each ESXi host is synchronized with the other components in the vSphere network. PTP enables both software and hardware-based timestamping on ESXi hosts and provides a highly accurate time synchronization. See also: https://docs.vmware.com/en/VMware-Edge-Compute-Stack/services/utility-substation-vpac-ready-infrastructure/GUID-07B55500-C59A-4572-AA4D-728BD47AEA9C.html#:~:text=You%20must%20enable%20Precision%20Time,a%20highly%20accurate%20time%20synchronization.

This was my answer, passed with 452

The question quotes that the TIME SOURCE should be accurate to the microsecond. It don't says that the host must follow this source with a microsecond accuracy C should match the policy.

NTP provides millisecond timing accuracy and PTP maintains microsecond timing accuracy.

B: All physical servers must synchronize time with an external time source that is accurate to the microsecond. NTP is milliseconds.

Resposta: B PTP: microssegundos e NTP: milissegundos

Answer is C. Difference between NTP and PTP: NTP allows for precision within milliseconds, PTP allows for precision within nanoseconds

for sure b

PTP is accurate to the microsecond.