What NTP stratum level is a server that is connected directly to an authoritative time source?
NTP architecture
Introducing time.cloudflare.com
Stratum 1 - NTP Time Server | RNTrust
NTP Server Device | GPS NTP Time Server TM1000A
What is a Stratum 1 Time Server? - NTP | TimeTools Ltd
NTP: The Network Time Protocol
Detailed hierarchy of the Stratum servers | Download Scientific Diagram
What is Stratum 1? | EndRun Technologies
NTP Stratum | ESE
NTP hierarchy
NTP Server | Time Server | NTP Time Server
What is NTP? A Guide About Network Time Protocol - sunnyvalley.io
Seven best practices to keep your NTP resilient – BlueCat Networks
building a cheap stratum 1 gps ntp timeserver – markus' self teaching
Stratum 1 - NTP Time Server | RNTrust
87Rb Stratum 1 NTP Server – HARDWARE – Delta²
NTP Time Server to Accurately Sync Your Network | EndRun
Arduino-based Stratum-1 NTP Server
![LeoNTP Networked Time NTP Server [NTP_Server] - 300.00GBP : Leo Bodnar, Simulator Electronics](http://www.leobodnar.com/shop/images/leontp-product-500px.jpg "LeoNTP Networked Time NTP Server [NTP_Server] - 300.00GBP : Leo Bodnar, Simulator Electronics")
LeoNTP Networked Time NTP Server [NTP_Server] - 300.00GBP : Leo Bodnar, Simulator Electronics
Stratum 1 Raspberry Pi Time Server - My Wushu Blog
NTP100-GPS Stratum 1 NTP Time Server — Masterclock, Inc.
Network Time Protocol (NTP) Best Practices | TimeTools Ltd
NTP Server
File:Compact Stratum 1 NTP time server hardware, October 2020.jpg - Wikimedia Commons
