Within the Differentiated Services (DiffServ) architecture, how many classes of service (CoS) are there?

Photoshop uses a percentage value, called ____, to denote how solid the edge of the brush stroke appears.

a. firmness b. hardness c. resolution d. consistency

What is an NP-complete problem?

a. A problem where there is a non-polynomial or NP-complete answer b. A problem with an O(1) constant time algorithm solution c. A problem with a non-existent algorithm d. A problem with a non-linear algorithm solution