UnScramble this Word: d s a u w p r?

Questions

The name given to what kind of mechanism is derived from a czech word meaning compusary service?

Ninetails,pikachu,vileplume & weepinbell are all types of what?

In computer talk what is a nibble?

Barclays bank in Enfield was the first in the world to have what?

As what is Cognoscenti v. Intelligentsia better known?