____ determines the number of colors that an image contains.

A ________ uses cables, radio waves, or infrared signals to link computers or peripherals, such as printers, within a small geographic area.

a. LAN b. WAN c. MAN d. CAN

Answer the following statements true (T) or false (F)

1. The connection-oriented integrity service addresses both message stream modification and denial of service. 2. All the techniques for providing security have two components: a security-related transformation on the information to be sent and some secret information shared by the two principals. 3. An attack tree is a branching hierarchical data structure represents a set of potential techniques for exploiting security vulnerabilities. 4. The data integrity service inserts bits into gaps in a data stream to frustrate traffic analysis attempts. 5. Symmetric encryption is used to conceal the contents of blocks or streams of data of any size, including messages, files, encryption keys, and passwords.