CompTIA A+ Acronym List - Core 1-220-1001 - Core 2-220-1002

Sep 20, 2026

CompTIA A+ Acronym List for IT fundamentals consolidation, covering Core 1 (220-1001) and Core 2 (220-1002). The content provides a reference-style catalog of common computing, networking, storage, security, and hardware terms with their standard acronym expansions, such as BIOS, DHCP, DNS, DNS, AES, HDMI, RAM, and DDoS. It supports fast study and quick lookup during exam preparation and review.

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CompTIA A+ Acronym List

Core 1 (220-1001)

Core 2 (220-1002)

CompTIA A+ Acronym List Core 1 (220-1001) and Core 2 (220-1002) AC: Alternating Current ACL: Access Control List ACPI: Advanced Conﬁguration Power Interface ADF: Automatic Document Feeder ADSL: Asymmetrical Digital Subscriber Line AES: Advanced Encryption Standard AHCI: Advanced Host Controller Interface AP: Access Point APIPA: Automatic Private Internet Protocol Addressing APM: Advanced Power Management ARP: Address Resolution Protocol ASR: Automated System Recovery ATA: Advanced Technology Attachment ATAPI: Advanced Technology Attachment Packet Interface ATM: Asynchronous Transfer Mode ATX: Advanced Technology Extended AUP: Acceptable Use Policy A/V: Audio Video BD-R: Blu-ray Disc Recordable BIOS: Basic Input/Output System BD-RE: Blu-ray Disc Rewritable BNC: Bayonet-Neill-Concel man BSOD: Blue Screen of Death 1 BYOD: Bring Your Own Device CAD: Computer-Aided Design CAPTCHA: Completely Automated Public Turing test to tell Computers and Humans Apart CD: Compact Disc CD-ROM: Compact Disc-Read-Only Memory CD-RW: Compact Disc-Rewritable CDFS: Compact Disc File System CERT: Computer Emergency Response Team CFS: Central File System, Common File System, or Command File System CGA: Computer Graphics and Applications CIDR: Classless Inter-Domain Routing CIFS: Common Internet File System CMOS: Complementary Metal-Oxide Semiconductor CNR: Communications and Networking Riser COMx: Communication port (x = port number) CPU: Central Processing Unit CRT: Cathode-Ray Tube DaaS: Data as a Service DAC: Discretionary Access Control DB-25: Serial Communications D-Shell Connector, 25 pins DB-9: Serial Communications D-Shell Connector, 9 pins DBaaS: Database as a Service DC: Direct Current DDoS: Distributed Denial of Service DDR: Double Data Rate DDR RAM: Double Data Rate Random Access Memory DFS: Distributed File System DHCP: Dynamic Host Conﬁguration Protocol DIMM: Dual Inline Memory Module DIN: Deutsche Industrie Norm DLT: Digital Linear Tape DLP: Digital Light Processing or Data Loss Prevention DMA: Direct Memory Access DMZ: Demilitarized Zone DNS: Domain Name Service or Domain Name Server DoS: Denial of Service DRAM: Dynamic Random Access Memory DRM: Digital Rights Management DSL: Digital Subscriber Line DVD: Digital Versatile Disc DVD-RAM: Digital Versatile Disc-Random Access Memory DVD-ROM: Digital Versatile Disc-Read Only Memory DVD-R: Digital Versatile Disc-Recordable DVD-RW: Digital Versatile Disc-Rewritable DVI: Digital Visual Interface DVI-D: Digital Visual Interface-Digital ECC: Error Correcting Code ECP: Extended Capabilities Port EEPROM: Electrically Erasable Programmable Read-Only Memory EFS: Encrypting File System EIDE: Enhanced Integrated Drive Electronics EMI: Electromagnetic Interference EMP: Electromagnetic Pulse EPROM: Erasable Programmable Read-Only Memory EPP: Enhanced Parallel Port ERD: Emergency Repair Disk eSATA: External Serial Advanced Technology Attachment ESD: Electrostatic Discharge EULA: End User License Agreement EVGA: Extended Video Graphics Adapter/Array Ext2: Second Extended File System exFAT: Extended File Allocation Table FAT: File Allocation Table FAT12: 12-bit File Allocation Table FAT16: 16-bit File Allocation Table FAT32: 32-bit File Allocation Table FDD: Floppy Disk Drive FPM: Fast Page Mode FSB: Front-Side Bus FTP: File Transfer Protocol FQDN: Fully Qualiﬁed Domain Name GDDR: Graphics Double Data Rate GDI: Graphics Device Interface GUI: Graphical User Interface GUID: Globally Unique Identiﬁer GPS: Global Positioning System GPT: GUID Partition Table GPU: Graphics Processing Unit GSM: Global System for Mobile Communications HAL: Hardware Abstraction Layer HAV: Hardware Assisted Virtualization HCL: Hardware Compatibility List HDCP: High-Bandwidth Digital Content Protection HDD: Hard Disk Drive

FAQs

What does the CompTIA A+ Acronym List contain?

It contains an acronym reference that expands common IT terms across networking, hardware, storage, and security for CompTIA A+ study.

Which exam cores are covered in this list?

The list is organized for Core 1 (220-1001) and Core 2 (220-1002).

How should a learner use the acronyms in exam preparation?

Use the expansions as a quick lookup to reinforce meanings of frequently tested technical abbreviations during review.

Sep 20, 2026

Uploaded by Jordan Avery