utf 8 - ASCII vs Unicode + UTF-8

Question

Was reading Joel Spolsky's 'The Absolute Minimum' about character encoding. It is my understanding that ASCII is a Code-point + Encoding scheme, and in modern times, we use Unicode as the Code-point scheme and UTF-8 as the Encoding scheme. Is this correct?

Answer 1

In modern times, ASCII is now a subset of UTF-8, not its own scheme. UTF-8 is backwards compatible with ASCII.