To better delineate sections, format headings in a font size at least four points larger than body text

You can block logical ports from invaders and make your computer invisible to others on the Internet by installing ________

A) a firewall B) antivirus software C) a packet filter D) a packet sniffer

For the following examples, identify its organizational scheme.

a. Television listing b. Index in a book c. Map of hiking trails d. Calendar of events e. The white pages in a U.S. telephone book f. Art gallery with rooms for each of the medieval, Renaissance, Rococo, Romantic, and Impressionist artists