This appendix identifies abbreviations, acronyms, and initialisms used in this book and in the internetworking industry.
Many of these acronyms and other terms are also described in the Cisco Internetworking Terms and Acronyms resource, available at http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/.
Triple Data Encryption Standard.
authentication, authorization, and accounting.
Area Border Router.
automatic call distribution.
1. acknowledgment. 2. acknowledgment bit in a TCP segment.
Application and Content Networking System.
(Cisco Secure) Access Control Server.
asymmetric digital subscriber line.
Advanced Encryption Standard.
Address Resolution Protocol.
Autonomous System ...