Comptia LINUX+ exam acronyms

Updated: November 29, 2022

The following is a list of acronyms that appear on the Linux+ exam. Candidates are encouraged to review the complete list and attain a working knowledge of all listed acronyms as part of a comprehensive exam preparation program.

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ACL - Access Control List
BIOS - Basic Input/Output System
CI/CD - Continuous Integration/Continuous Deployment
CIFS - Common Internet File System
CPU - Central Processing Unit
DNS - Domain Name System
FHS - Filesystem Hierarchy Standard
FUSE - Filesystem in Userspace
GPT - GUID (Globally Unique Identifier) Partition Table
GRUB - Grand Unified Bootloader
GUID - Globally Unique Identifier
I/O - Input/Output
IOPS - Input/Ouput Operations Per Second
IP - Internet Protocol
ISO - International Organization for Standardization
JSON - JavaScript Object Notation
LDAP - Lightweight Directory Access Protocol
LUKS - Linux Unified Key Setup
LVM - Logical Volume Manager
MFA - Multifactor Authentication
MBR - Master Boot Record
NAS - Network-attached Storage
NAT - Network Address Translation
NFS - Network File System
NTP - Network Time Protocol
NVMe - Non-volatile Memory Express
OOM - Out of Memory
PAM - Pluggable Authentication Module
PKI - Public Key Infrastructure
PXE - Preboot Execution Environment
RAID - Redundant Array of Independent (or Inexpensive) Disks
SAN - Storage Area Network
SCP - Secure Copy Protocol
SELinux - Security Enhanced Linux
SFTP - Secure File Transfer Protocol
SGID - Set Group ID
SMB - Server Message Block
SSD - Solid-state Drive
SSH - Secure Shell
SSL - Secure Sockets Layer
SSO - Single Sign-On
SSSD - System Security Services Daemon
SUID - Set User ID
TLS - Transport Layer Security
UEFI - Unified Extensible Firmware Interface
UFW - Uncomplicated Firewall
USB - Universal Serial Bus
YAML - YAML Ain’t Markup Language

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