__________ are encrypted message components that can be mathematically proven to be authentic.

You can rely on a robots.txt file to keep a document on your web server hidden.

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

The IEEE ____ standard specified that wireless transmissions could take place in one of two ways. The first is through infrared light, and the other type of transmission is by sending radio signals.

A. 802.1 B. 802.3 C. 802.8 D. 802.11