Appendix D:
Security+ Acronym List
For its Security+ certification exam, CompTIA expects you to be familiar with many common industry acronyms. Table D-1 contains a list of the acronyms that you should know (more information on each can be found in the Glossary as well as throughout the book).
Table D-1: Security+ acronyms
| Acronym | Definition |
| 3DES | Triple Digital Encryption Standard |
| AAA | Authentication, Authorization, and Accounting |
| ACL | access control list |
| AES | Advanced Encryption Standard |
| AES256 | Advanced Encryption Standard 256 bit |
| AH | Authentication Header |
| ALE | annual or annualized loss expectancy |
| AP | access point |
| ARO | annualized rate of occurrence |
| ARP | Address Resolution Protocol ... |
