As nouns the difference between requester and asker
is that requester is one who, or that which, makes a request while asker is ("an eft or newt") or asker can be the person who asks a question.
requester
English
Noun
(
en noun)
One who, or that which, makes a request.
Coordinate terms
* requestress
asker
English
Etymology 1
From (etyl) aske, arske, from (etyl) .
Etymology 2
Noun
(
en noun)
The person who asks a question