Ask sharps and flats as well as naturals
Ask by ear: a C is heard, then the note, to name it from the C before it is seen. Never two names for one sound among the answers (F♯ and G♭)
How many answers to choose from, the right one among them
The clef the notes are written in
Highest note asked, as a MIDI number
Lowest note asked, as a MIDI number
Answer by playing: the note is shown — or heard, by ear — and played on an instrument instead of named
What a note-identification drill asks.