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Appendixes > Acronyms
Appendix B. Acronyms
| AC | Alternating Current |
| ACL | Access Control List |
| AICPA | American Institute of Certified Public Accountants |
| AoE | Ata over Ethernet |
| ASP | Application Service Provider or Active Server Page |
| ATA | Advanced Technology Attachment |
| ATM | Asynchronous Transfer Mode |
| ATS | Automatic Transfer Switch |
| AUP | Acceptable-Use Policy |
| AUSCERT | Australian Computer Emergency Response Team |
| BGP | Border Gateway Protocol |
| CA | Certification Authority |
| CAD | Computer-Aided Design |
| CAP | Columbia Appletalk Protocol |
| CDP | Continuous Data Protection |
| CD-ROM | Compact Disk Read-Only Memory |
| CEO | Chief Executive Officer |
| CERT | Computer Emergency Response Team |
| CFO | Chief Financial Officer |
| CGI | Common Gateway Interface |
| CIAC | Computer Incident Advisory Capability |
| CIFS | Common Internet File System |
| CIO | Chief Information Officer |
| CMS | Content Management System |
| Colo | Colocation Center |
| CNAME | Common NAME (DNS record) |
| COO | Chief Operating Officer |
| CPU | Central Processing Unit |
| CSE | Customer Support Engineer |
| CSU/DSU | Channel Service Unit/Data Service Unit |
| CTO | Chief Technology Officer |
| DAD | Disk Access Density |
| DAS | Directly Attached Storage |
| DC | Direct Current |
| DHCP | Dynamic Host Configuration Protocol |
| DLT | Digital Linear Tape |
| DNS | Domain Name Service |
| DoS | Denial of Service |
| DR | Disaster Recovery |
| DSL | Digital Subscriber Line |
| EAP | Employee Assistance Program |
| EDA | Electronic Design Automation |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| EPO | Emergency Power Off |
| ERP | Enterprise Resource Planning |
| ESD | Electrostatic Discharge |
| ETR | Estimated Time to Repair |
| ETSI | European Telecommunication Standards Institute |
| EU | European Union |
| FAA | Federal Aviation Administration |
| FAQ | Frequently Asked Question |
| FC | Fibre Channel |
| FC-AL | Fibre Channel-Arbitrated Loop |
| FCC | Federal Communications Commission |
| FDDI | Fiber-Distributed Data Interface |
| FTP | File Transfer Protocol |
| GUI | Graphical User Interface |
| HBA | Host Bus Adapter |
| HHA | Handheld Authenticator |
| HTML | HyperText Markup Language |
| HTTP | HyperText Transfer Protocol |
| HVAC | Heating, Ventilation, Air Conditioning |
| ICS | Incident Command System |
| I/O | Input/Output |
| ICMP | Internet Control Message Protocol |
| IDF | Intermediate Distribution Frame |
| IDS | Intrusion Detection System |
| IEEE | Institute of Electrical and Electronic Engineers |
| IETF | Internet Engineering Task Force |
| IMAP | Internet Message Access Protocol |
| IP | Intellectual Property |
| IP | Internet Protocol |
| IS | Information Systems |
| ISDN | Integrated Service Digital Network |
| ISO | International Organization for Standardization |
| ISP | Internet Service Provider |
| IT | Information Technology |
| ITIL | Information Technology Infrastructure Library |
| KVM | Keyboard, Video, Mouse |
| LAN | Local Area Network |
| LDAP | Lightweight Directory Access Protocol |
| LOPSA | League of Professional System Administrators |
| LPDP | Line Printer Daemon Protocol |
| LISA | Large Installation System Administration |
| MAC | Media Access Control |
| MAN | Metropolitan Area Network |
| MAPI | Mail API, a proprietary licensed API not to be confused with IMAP |
| MDA | Mail-Delivery Agent |
| MDF | Main Distribution Frame |
| MIB | Management Information Base |
| MIDI | Musical Instrument Digital Interface |
| MIL-SPEC | U.S. Military Specifications |
| MIS | Management Information Systems |
| MONET | Multiwavelength Optical Network |
| MPEG | Moving Picture Experts Group |
| MPLS | Multi Protocol Label Switching |
| MRTG | Multirouter Traffic Grapher |
| MS-SMS | Microsoft’s System Management Service |
| MTA | Mail Transport Agent |
| MTU | Maximum Transmission Unit |
| MTTR | Mean Time to Repair |
| MUA | Mail User Agent |
| MX | Mail Exchanger |
| NAS | Network-Attached Storage |
| NAT | Network Address Translation |
| NCD | Network Computing Devices |
| NDA | Non-Disclosure Agreement |
| NEBS | Network Equipment Building System |
| NFS | Network File System |
| NIC | Network Interface Card (PC Ethernet network card) |
| NIS | Network Information Service |
| NNTP | Net News Transfer Protocol |
| NOC | Network Operations Center |
| OEM | Original Equipment Manufacturer |
| OLTP | Online Transaction Processing |
| OPS | Operations Per Second |
| OS | Operating System |
| OSHA | Occupational Safety and Health Administration |
| OSI | Open Systems Interconnection |
| OSPF | Open Shortest Path First |
| OTP | One-Time Password |
| PAM | Pluggable Authentication Module |
| PARIS | Programmable Automatic Remote Installation Service |
| PC | Personal Computer |
| PCMIA | People Can’t Memorize Industry Acronyms |
| PDA | Personal Digital Assistant |
| PDU | Power-Distribution Unit |
| PIN | Personal Identification Number |
| POP | Post Office Protocol |
| POPI | Protection of Proprietary Information |
| POP3 | Post Office Protocol, version 3 (Not to be confused with MAPI) |
| PPP | Point-to-Point Protocol |
| PR | Public Relations |
| QA | Quality Assurance |
| QPS | Queries Per Second |
| QoS | Quality of Service |
| RADIUS | Remote Authentication Dial-In User Service |
| RAID | Redundant Array of Inexpensive Disks |
| RAM | Random Access Memory |
| RAS | Remote Access Server |
| RCS | Revision Control System |
| RF | Radio Frequency |
| RFC | Request for Comments |
| RIP | Routing Information Protocol |
| RMA | Returned Merchandise Authorization |
| ROI | Return on Investment |
| RPC | Remote Procedure Call |
| RTT | Round-Trip Time |
| RSS | Really Simple Syndication |
| SA | System Administrator |
| SAGE | System Administrator’s Guild |
| SAN | Storage-Area Network |
| SANS | System Administration, Network, and Security |
| SAS-70 | Statement of Auditing Standards, No. 70 |
| SATA | Serial ATA |
| SCCS | Source Code Control System |
| SCSI | Small Computer Systems Interface |
| SCM | Software Configuration Management |
| SEC | Securities and Exchange Commission |
| SID | Security ID |
| SLA | Service-Level Agreement |
| SMB | Server Message Block |
| SME | Subject Matter Expert |
| SMTP | Simple Mail Transfer Protocol |
| SNMP | Simple Network Management Protocol |
| SOA | Start of Authority |
| SONET | Synchronous Optical Network |
| SQL | Structured Query Language |
| SSH | Secure Shell |
| SSL | Secure Sockets Layer |
| STP | Spanning Tree Protocol |
| SUID | Set User ID |
| TCP | Transmission Control Protocol |
| TDD | Test-Driven Development |
| TFTP | Trivial File Transfer Protocol |
| TLS | Transport Layer Security |
| TTL | Time to Live |
| UCE | Unsolicited Commercial Email |
| UDP | User Data Protocol |
| UID | User Identification |
| UPS | Uninterruptible Power Supply |
| USB | Universal Serial Protocol |
| URL | Uniform Resource Locator |
| UUCP | Unix-to-Unix Copy Protocol |
| VIF | Virtual Interface |
| VLAN | Virtual LAN |
| VPN | Virtual Private Network |
| VRRP | Virtual Router Redundancy Protocol |
| WAN | Wide Area Network |
| WAFL | Write Anywhere File Layout |
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