Question

What are the roles of Help desk professional and Technical support specialist?
please explain

Answer 1

You might have better luck in the Computer Science topic (there's no other technical topic on IT here yet to address topics like this), but I can help out with this one.

Help Desk professionals are normally expected to field general questions asked of a company's product; in the case of IT, they're usually the first voice you hear (or chat with via IRC) if you contact a company for help.

Technical support specialists are the next level up and are usually considered the "hands on" portion of a particular product's support structure. Sometimes they go out into the field on service calls. They normally aren't considered part of the front line -- at least ideally -- and often rely on the Help Desk to filter the calls, separating general questions from the issues that require their expertise.