Term 1
/etc/hosts
A local text file on Unix-like operating systems that manually maps hostnames to IP addresses, overriding DNS for specified entries.
Acronym study
Terms 1–30 of 826 220-1201 acronyms and key terms. Each entry includes a plain-English definition and a link to the full 800-word glossary page with exam context and practice questions.
Term 1
A local text file on Unix-like operating systems that manually maps hostnames to IP addresses, overriding DNS for specified entries.
Term 2
/etc/resolv.conf is a configuration file on Linux and Unix-like systems that tells the computer which Domain Name System (DNS) servers to use when converting domain names like google.com into IP addresses.
Term 3
A 2-in-1 laptop is a portable computer that can switch between a traditional laptop form and a tablet form, usually by detaching or rotating the keyboard.
Term 4
The 24-pin motherboard connector is the main power cable that connects the computer's power supply unit (PSU) to the motherboard, supplying electricity to the motherboard and its components.
Term 5
Two-factor authentication (2FA) is a security method that requires two different types of proof before granting access to an account or system.
Term 6
32-bit File Allocation Table (FAT32) is a file system that organizes data on storage devices like hard drives and USB flash drives using a 32-bit addressing scheme to track where files are stored.
Term 7
A 3D printer is a device that creates physical objects by depositing layers of material based on a digital model.
Term 8
5G is the fifth generation of cellular network technology, designed to deliver faster speeds, lower latency, and support for many more connected devices than previous generations.
Term 9
The 8-pin CPU connector is a power cable from the power supply that delivers dedicated electricity to the processor on a computer's motherboard.
Term 10
An A record is a DNS record that maps a domain name to the IPv4 address of the server hosting that domain.
Term 11
An acceptable use policy is a set of rules that an organization creates to define how employees and other users may use its computer systems, networks, and data.
Term 12
An access key is a unique identifier and secret code pair used to authenticate requests to cloud storage services, ensuring only authorized users or applications can access data.
Term 13
An access point is a device that creates a wireless local area network, usually by connecting to a wired network and broadcasting a Wi-Fi signal for computers, phones, and tablets to join.
Term 14
An Access Control List is a set of rules that determines who or what can access specific network resources or data.
Term 15
Address Resolution Protocol (ARP) is a network protocol that maps a device's IP address to its physical MAC address so data can travel across a local network.
Term 16
Advanced Micro Devices (AMD) is a company that designs and manufactures central processing units (CPUs), graphics processing units (GPUs), and other computer hardware components used in personal computers, servers, and embedded systems.
Term 17
Advanced RISC Machine (ARM) is a family of energy-efficient processor architectures based on reduced instruction set computing, widely used in mobile devices, embedded systems, and increasingly in servers and laptops.
Term 18
Advanced Technology Extended (ATX) is a motherboard form factor specification that defines the physical dimensions, mounting points, power connector layout, and cooling requirements for desktop computer systems.
Term 19
Adware is software that automatically displays or downloads unwanted advertisements, often bundled with free programs, and may track user behavior without clear consent.
Term 20
Airplane mode is a mobile device setting that disables wireless communication functions like cellular, Wi-Fi, and Bluetooth to prevent interference with aircraft systems.
Term 21
AirPrint is Apple's built-in technology that lets you print wirelessly from any Apple device to a compatible printer without installing any extra drivers or software.
Term 22
An Alias record is a DNS record type that maps a hostname to another hostname, seamlessly routing traffic to AWS resources like load balancers or CloudFront distributions.
Term 23
AlloyDB is a fully managed, PostgreSQL-compatible database service from Google Cloud designed for high performance, scalability, and reliability for transactional and analytical workloads.
Term 24
Amazon Elastic File System (EFS) is a scalable, fully managed cloud file storage service that can be accessed by multiple Amazon EC2 instances concurrently using the NFS protocol.
Term 25
Amazon FSx is a fully managed service that makes it easy to launch, run, and scale feature-rich, high-performance file systems in the cloud, supporting popular file systems like Windows File Server and Lustre.
Term 26
Android is an open-source operating system used primarily on mobile devices like smartphones and tablets, developed by Google.
Term 27
Anti-malware is software that detects, prevents, and removes malicious software from computers, networks, and devices.
Term 28
Antivirus is software that detects, prevents, and removes malicious software (malware) from a computer or network.
Term 29
A model where you rent any IT resource or service over the internet instead of owning it.
Term 30
APFS (Apple File System) is a modern file system designed by Apple for solid-state drives and flash storage, offering improved performance, encryption, and space sharing across macOS, iOS, and other Apple devices.