CompTIA A+ CORE 1 220-1201 Course Notes

A collection of key terms and definitions relevant to the CompTIA A+ Core 1 exam.

CompTIA A+ Certification

Entry-level certification for IT professionals covering hardware, mobile devices, networking, and troubleshooting.

BYOD

Bring Your Own Device policy allowing employees to use personal devices for work.

MDM

Mobile Device Management system to manage company-owned and user-owned mobile devices.

VLAN

Virtual Local Area Network, a logically separate network on the same physical network.

VPN

Virtual Private Network, providing secure connections over a public network.

NFC

Near Field Communication, technology for short-range wireless communication.

RAM

Random Access Memory, used for temporary data storage while a computer is running.

SSD

Solid State Drive, a faster storage device that uses flash memory without moving parts.

TCP

Transmission Control Protocol, a connection-oriented protocol for reliable data transmission.

UDP

User Datagram Protocol, a connectionless protocol used for faster data transmission without guarantees.

DHCP

Dynamic Host Configuration Protocol, automatically assigns IP addresses to devices on a network.

DNS

Domain Name System, translates human-readable domain names to machine-readable IP addresses.

802.11 Standards

Sets of standards for implementing wireless local area network (WLAN) communications.

RAID

Redundant Array of Independent Disks, a technology for data storage redundancy and performance.

Hypervisor

Virtual Machine Manager that allows multiple operating systems to run on a single hardware platform.

Cloud Computing

Using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server.

BIOS

Basic Input/Output System, the firmware used to start a computer and manage data flow between the OS and attached devices.

HSM

Hardware Security Module, used for secure cryptographic functions and key management.

TPM

Trusted Platform Module, a hardware component that provides secure cryptographic functions.

SATA

Serial Advanced Technology Attachment, an interface for connecting storage devices to the computer.

USB

Universal Serial Bus, a standard for connecting devices and transferring data.

Lightning Cable

Apple's proprietary 8-pin digital signals connector for iPhone and iPad devices.