Which option is not part of the OS X desktop interface?

d. The UML models operations by listing the operation name preceded by an access modifier. A(n) ________ indicates a public operation in the UML.

a. - b. + c. p d. *

Various methods of modifying a bit stream to reduce or eliminate a bias have been developed. These are referred to as ___________ algorithms.

A. backward B. deskewing C. forward D. keystream