ADSL. Asymmetric Digital Subscriber Line. Modems attached to twisted pair copper wiring that transmit
AH. The Authentication Header provides data origin authentication, connec- tionless integrity, and
ANSI. American National Standards Institute.
ASCII. American Standard Code for Information Interchange (pronounced
asynchronous communication. Network system that allows data to be sent at irregular intervals by preceding each octet with a start bit and follow- ing it with a stop bit. Compare synchronous communication.
Auth Protocol. Authentication Protocol for IP packet header. The three parameter values are None, Encapsulating Security Payload (ESP) and Authentication Header (AH).
backbone. The segment of the network used as the primary path for trans- porting traffic between network segments.
baud rate. Unit of signaling speed equal to the number of number of times per second a signal in a communications channel varies between states. Baud is synonymous with bits per second (bps) if each signal represents one bit.
binary. Numbering system that uses only zeros and ones.
bps. Bits per second. A measure of data transmission speed.