USB charging, part 1: requirements

USB charging, part 1: requirements

The sentiment is correct but the DNS example is incorrect.

Mockapetris in RFC882 used "primary/secondary" to refer to the role of servers and "master/slave" to refer to the origin of DNS records. Terminology to distinguish the servers and the records they serve is perhaps too fine to be useful once the DNS system existed, whatever clarity the differing terminology bought during the design of the DNS system.

The use of primary/secondary in BIND4 configurations confused many. Master/slave was felt to be clearer and appeared in BIND8 configuration.

"Original" and "copy" — or many other suggestions — may have been better and perhaps clearer terms, but that would have required BIND to break away entirely from the terminology in the DNS RFCs.

Then there's the question of if inanimate objects such as servers should be anthropomorphised to the extent that a "slave server" is not a "neutral term"; a topic I am unqualified to determine.