Unlike a diskette drive, a hard disk spins constantly. This reduces __________.

Match the following terms to their meanings:

I. Place where individuals on the Web can share their knowledge A. discussion forum II. A list of discussion topics B. posts III. Individual comments to discussion topics C. default printer IV. Printer that automatically receives all print commands D. local printer V. Printer attached directly to a computer E. threads

Which of the following uses datagrams and wireless packet switching to send data through radio waves?

A. CB radio B. digital radio C. amateur radio D. packet radio