Here is a list of acronyms associated with the objectives listed in the Core 1 section of the CompTIA A+.

• AAA = Authentication, Authorization, and Accounting
• AC = Alternating Current
• ACL = Access Control List
• ADF = Automatic Document Feeder
• AES = Advanced Encryption Standard
• AP = Access Point
• APFS = Apple File System
• APIPA = Automatic Private Internet Protocol Addressing
• APK = Android Package
• ARM = Advanced RISC [Reduced Instruction Set Computer] Machine
• ARP = Address Resolution Protocol
• ATA = Advanced Technology Attachment
• ATM = Asynchronous Transfer Mode
• ATX = Advanced Technology Extended
• AUP = Acceptable Use Policy BIOS Basic Input/Output System
• BSOD = Blue Screen of Death
• BYOD = Bring Your Own Device
• CAD = Computer-aided Design
• CAPTCHA = Completely Automated Public Turing Test to Tell Computers and Humans Apart
• CD = Compact Disc
• CDFS = Compact Disc File System
• CDMA = Code-Division Multiple Access
• CERT = Computer Emergency Response Team
• CIFS = Common Internet File System
• CMD = Command Prompt
• CMOS = Complementary Metal-Oxide Semiconductor
• CPU = Central Processing Unit CRL Certificate Revocation List
• DC = Direct Current
• DDoS = Distributed Denial of Service
• DDR = Double Data Rate
• DHCP = Dynamic Host Configuration Protocol

• DIMM – Dual Inline Memory Module
• DKIM – DomainKeys Identified Mail
• DMA – Direct Memory Access
• DMARC – Domain-based Message Authentication, Reporting, and Conformance
• DNS – Domain Name System
• DoS – Denial of Service
• DRAM – Dynamic Random-Access Memory
• DRM – Digital Rights Management
• DSL – Digital Subscriber Line
• DVI – Digital Visual Interface
• DVI-D – Digital Visual Interface-Digital
• ECC – Error Correcting Code
• EFS – Encrypting File System
• EMI – Electromagnetic Interference
• EOL – End-of-Life
• eSATA – External Serial Advanced Technology Attachment
• ESD – Electrostatic Discharge
• EULA – End-User License Agreement
• exFAT – Extensible File Allocation Table
• ext – Extended File System
• FAT – File Allocation Table
• FAT12 – 12-bit File Allocation Table
• FAT16 – 16-bit File Allocation Table
• FAT32 – 32-bit File Allocation Table
• FSB – Front-Side Bus
• FTP – File Transfer Protocol
• GFS – Grandfather-Father-Son
• GPS – Global Positioning System
• GPT – GUID (Globally Unique Identifier) Partition Table
• GPU – Graphics Processing Unit
• GSM – Global System for Mobile Communications
• GUI – Graphical User Interface
• GUID – Globally Unique Identifier
• HAL – Hardware Abstraction Layer
• HAV – Hardware-assisted Virtualization

• HCL – Hardware Compatibility List
• HDCP – High-bandwidth Digital Content Protection
• HDD – Hard Disk Drive
• HDMI – High-Definition Multimedia Interface
• HSM – Hardware Security Module
• HTML – Hypertext Markup Language
• HTTP – Hypertext Transfer Protocol
• HTTPS – Hypertext Transfer Protocol Secure
• I/O – Input/Output
• IaaS – Infrastructure as a Service
• ICR – Intelligent Character Recognition
• IDE – Integrated Drive Electronics
• IDS – Intrusion Detection System
• IEEE – Institute of Electrical and Electronics Engineers
• IMAP – Internet Mail Access Protocol
• IOPS – Input/Output Operations Per Second
• IoT – Internet of Things
• IP – Internet Protocol
• IPS – Intrusion Prevention System
• IPS – In-plane Switching
• IPSec – Internet Protocol Security
• IR – Infrared
• IrDA – Infrared Data Association
• IRP – Incident Response Plan
• ISO – International Organization for Standardization
• ISP – Internet Service Provider
• ITX – Information Technology eXtended
• KB – Knowledge Base
• KVM – Keyboard-Video-Mouse
• LAN – Local Area Network
• LC – Lucent Connector
• LCD – Liquid Crystal Display
• LDAP – Lightweight Directory Access Protocol
• LED – Light-emitting Diode
• MAC – Media Access Control/Mandatory Access Control
• MAM – Mobile Application Management
• MAN – Metropolitan Area Network
• MBR – Master Boot Record
• MDM – Mobile Device Management
• MFA – Multifactor Authentication
• MFD – Multifunction Device
• MFP – Multifunction Printer
• MMC – Microsoft Management 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
• NDA – Non-disclosure Agreement
• NetBIOS – Networked Basic Input/Output System
• NetBT – NetBIOS over TCP/IP (Transmission Control Protocol/Internet Protocol)
• NFC – Near-field Communication
• NFS – Network File System
• NIC – Network Interface Card
• NTFS – New Technology File System
• NVMe – Non-volatile Memory Express
• OCR – Optical Character Recognition
• OLED – Organic Light-emitting Diode
• ONT – Optical Network Terminal
• OS – Operating System
• PaaS – Platform as a Service
• PAN – Personal Area Network
• PC – Personal Computer
• PCIe – Peripheral Component Interconnect Express
• PCL – Printer Command Language
• PE – Preinstallation Environment
• PII – Personally Identifiable Information
• PIN – Personal Identification Number
• PKI – Public Key Infrastructure
• PoE – Power over Ethernet
• POP3 – Post Office Protocol 3
• POST – Power-on Self-Test
• PPP – Point-to-Point Protocol
• PRL – Preferred Roaming List
• PSU – Power Supply Unit
• PXE – Preboot Execution Environment
• RADIUS – Remote Authentication Dial-in User Service
• RAID – Redundant Array of Independent (or Inexpensive) Disks
• RAM – Random-access Memory
• RDP – Remote Desktop Protocol
• RF – Radio Frequency
• RFI – Radio-Frequency Interference
• RFID – Radio-Frequency Identification
• RJ11 – Registered Jack Function 11
• RJ45 – Registered Jack Function 45
• RMM – Remote Monitoring and Management
• RTO – Recovery Time Objective
• SaaS – Software as a Service
• SAN – Storage Area Network
• SAS – Serial Attached SCSI (Small Computer System Interface)
• SATA – Serial Advanced Technology Attachment

here is a link to the A+ Objectives page.

That is all for now!