Linux · Flashcard
Which protocol keeps a system's clock aligned with remote time servers?
- ANTP, which corrects the clock from a hierarchy of strata
- BSNMP, which polls devices for management counters and traps
- CSMTP, which relays mail between transfer agents on port 25
- DDHCP, which leases addresses and can hand out an NTP server
Why this is the answer
NTP disciplines the clock against servers organised in strata, correcting for the network delay it measures. SNMP is for monitoring, SMTP for mail, and DHCP is the closest trap here — option 42 can tell a client which NTP server to use, but DHCP never sets the clock itself.
Official docs