| AAA | Authentication, Authorization, Accounting |
| ACL | Access Control List |
| AES | Advanced Encryption Standard. Symmetrical,WPA2/3 |
| APFS | Apple File System |
| APIPA | Automated Private Internet Protocol Addressing [Assigns IP to device when DHCP server can’t be reached. 169.254.xxx.xxx. helps with throubleshooting network issues by still providing LAN access] |
| APK | Android Package Manager |
| ARM | Advanced Risc Machine |
| ARP | Address Resolution Protocol [How a host finds the MAC addr of any host on the same lan using that devices IP][ARP cache>ARP Request(broadcast message) to all devices>device responds with MAC>updates ARP cache] |
| AUP | Acceptable Use Policy [Policy for proper use of organizations IT resources, networks, devices, software] |
| CDFS | CD File System |
| CERT | Computer Emergency Response Team [team dedicated to responding to cyberattacks] |
| CIFS | Common Internet File System [alternate name for SMB. Communication protocol used to share files, printers, serial ports, and misc communication on a network] Port 139/445 |
| CRL | Certificate Revocation List [list for revoked digital certificates relating to security. For example a no longer truster SSL/TLS cert] |
| DDOS | Distributed Denial of Service |
| DKIM | DomainKeys Identified Mail [email authentication method designed to detect forged sender email addresses(email spoofing). Sending email server attaches (private)key to email, recipent checks key(public)in dns record]. Like adding a seal to letter |
| DMARC | Domain-Based Message Authentication, Reporting, and Conformance |
| DRM | Digital Rights Management [tech used to control access to and usage of copyrighted digital content] |
| DSL | Digitical Subscriber Line |
| EFS | Encrypting File System [Windows feature allowing users to encryp individual files/folders, symmetric] |
| EULA | End User License Agreement [Legal contract between software supplier and user] |
| FAT16/32 | File Allocation Table(16/32 Bit) [For fat32, individual files max is 4gb and max partition size is 4tb] |
| exFAT | Extensible File Allocation Table [extended version for fat32, file sizes up to 16 exabytes, partitions up to 128 petabytes] |
| ext | Extended File System [Linux file system, most modern being ext4. Ext4 max is 4Eib[exbibyte] for partitions, 16-256 TIB(tebibyte) file size] |
| GFS | Grandfather-Father-Son [back up system which creates and rotates at different periods. Grandfather(monthly/full/offsite), father(weekly/full/onprem), son(incremental/daily/onprem).] |
| GPT | GUID(Global Unique Identifier) Partition Table [partition table system apart of UEFI, supports more than 4 partitions(128 volumes(pt), 18 exabytes max), uses unique id’s for partitions for security/tracking, 64 bit cpu required(eufi)] |
| HAL | Hardware Abstraction Layer [software layer which acts as medium between hardware and operating system, actsa a standard translator for developers and drivers] |
| HCL | Hardware Compatibility List [what it sounds like, literal list of compatibility w/ hardware/SW/OS] |
| HDCP | High-Bandwidth Digital Content Protection [a standard for protection data across HDMI/DVI to prevent stripping/capturing of data] |
| HSM | Hardware Security Module [hardware or device for en/decrypting and storing digital keys. i.e Trezor] |
| HTML | Hypertext Markup Language |
| HTTP/S | Hypertext Transfer Protocol/Secure [application layer protocol used for the majority of the WWW, using hyperlinks.] 80, Secure uses TLS and port 443 |
| ICR | Intelligent Character Recognition [scanners for written, documents, for searching, etc.] |
| IEEE | Institute of Electrical and Electronics Engineers [501c for radio/electronic publication production/standards] |
| IMAP | Internet Mail Access Protocol [retrieves email from server over TCP/IP. Allows multiple devices] Port 143. Secure(TLS/SSL) port 993 |
| IOPS | I/O per second [measurement for maximum read/writes to noncontigious(not touching)storage locations] |
| IPS | Intrustion Prevention System [OR] In-Plane Switching |
| IRP | Incident Respone Plan |
| ISO | International Organization for Standardization |
| KB | Knowledge Base |
| LDAP | Lightweight Directory Access Protocol |
| MAC | Media Access Control [] |
| MAM: Mobile Application Management | |
| MAN: Metro Area Network | |
| MBR: Master Boot Record | |
| MDM: Mobile Device Management | |
| MFA: Multi-Factor Authentication | |
| MFD: Multifunction Device | |
| MFP: Multifunction Printer | |
| MMC: Microsoft Managment Console | |
| MOU: Memorandum of Understanding | |
| MSDS: Material Safety Data Sheet | |
| MSRA: Microsoft Remote Assistance | |
| MX: Mail Exchange | |
| NAC: Network Access Control | |
| NAT: Network Address Translation | |
| NetBIOS: Networked Basic Input/Output System | |
| NetBT: Netbios over TCP/IP | |
| NFS: Network File System | |
| NIC: Network File System | |
| NTFS: New Technology File System | |
| OCR: optical Character Recognition | |
| ONT: Optical Network Terminal | |
| PCIe: Peripheral Component Interconnect Express | |
| PCL: Printer Command Language | |
| PE: Preinstallation Environment | |
| PII: Personally Identifiable Information | |
| PKI: Public Key Infrastructure | |
| POP3: Post Office Protocol 3 | |
| POST: Power On Self Test | |
| PPP: Point-to-Point Protocol | |
| PRL: Preferred Roaming List | |
| PXE: Preboot Execution Environment | |
| RADIUS: Remote Authentication Dial-In User Service | |
| RAID: Redundant Array of Independent Disks | |
| RDP: Remote Desktop Protocol | |
| RMM: Remote Monitoring Management | |
| RTO: Recovery Time Objective | |
| SAN: Storage Area Network | |
| SCP: Secure Copy Protection | |
| SDN: Software-Defined Networking | |
| SFTP: Secure File Transfer Protocol | |
| SIM: Subscriber Identity Module | |
| S.M.A.R.T.: Self-Monitoring Analysis and Reporting Technology | |
| SMB: Server Message Block | |
| SMTP: Simple Mail Transfer Protocol | |
| SNMP: Simple Network Managmenet Protocol | |
| SNTP: Simple Network Time Protocol | |
| SPF: Sender Policy Framework | |
| SQL: Structure Query Language | |
| SSL: Secure Sockets Layer | |
| SSO: Single Sign On | |
| TACACS: Terminal Access Controller Access-Control System | |
| TCP: Transmission Control Protocol | |
| TCP/IP: | |
| TFTP: Trivial Transfer Protocol | |
| TKIP: Temporal Key Integrity Protocol | |
| TLS: Transport Layer Security | |
| TPM: Trusted Platform Module | |
| UAC: User Account Control | |
| UDP: User Datagram Protocol | |
| UNC: Universal Naming Convention | |
| UPnP: Universal Plug and Play | |
| UPS: Uninterruptable Power Supply | |
| UTM: Unified Threat Management | |
| VA: Vertical Alignment | |
| WEP: Wired Equivalant Policy | |
| WISP: Wireless Internet Service Provider | |
| WMN: Wireless Mash Network | |
| WPA: Wifi Protected Access | |
| WWAN: Wireless Wide Area Network | |
| XSS: Cross-Site Scripting |