Term 31
Direct-attached Storage
Direct-attached Storage (DAS) is a storage device connected directly to a computer or server without going through a network.
Acronym study
Terms 31–60 of 189 220-1101 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 31
Direct-attached Storage (DAS) is a storage device connected directly to a computer or server without going through a network.
Term 32
A cyberattack where many compromised computers flood a target system with traffic, making it unavailable to legitimate users.
Term 33
The Domain Name System (DNS) is the internet's phonebook that translates human-friendly domain names like google.com into computer-friendly IP addresses like 172.217.0.46.
Term 34
DMARC is an email authentication protocol that helps prevent spoofing and phishing by verifying that incoming email really comes from the domain it claims to be from and tells receiving servers what to do if verification fails.
Term 35
DomainKeys Identified Mail is an email authentication method that allows a domain to cryptographically sign its outgoing messages so receiving servers can verify the sender's domain is legitimate and the message was not tampered with.
Term 36
Double Data Rate (DDR) is a technology that doubles the data transfer rate of a memory or bus by sending data on both the rising and falling edges of the clock signal, effectively doing twice as much work per clock cycle.
Term 37
A Dual In-line Memory Module (DIMM) is a small circuit board that holds memory chips and plugs into a computer's motherboard to provide Random Access Memory (RAM).
Term 38
DHCP is a network protocol that automatically assigns IP addresses and other configuration settings to devices so they can communicate on a network.
Term 39
An embedded SIM is a small, soldered chip inside a device that works like a traditional SIM card but can be programmed remotely, letting you switch mobile carriers without swapping a physical card.
Term 40
The Encrypting File System (EFS) is a Windows feature that encrypts individual files and folders on an NTFS volume so that only authorized users can read them.
Term 41
End-of-life means a product or service is no longer being sold, updated, or supported by the manufacturer, and users should plan to upgrade or replace it.
Term 42
End-of-support means a company will no longer provide updates, security patches, or technical help for a product, leaving it open to risks.
Term 43
An End-user License Agreement (EULA) is a legal contract between a software creator and the person who installs or uses the software, outlining what the user can and cannot do with it.
Term 44
Endpoint detection and response (EDR) is a cybersecurity solution that continuously monitors endpoint devices for suspicious activity and automatically responds to threats to stop attacks in real time.
Term 45
Error-correcting code (ECC) is a method used by computer memory to automatically detect and fix single-bit errors without crashing or corrupting data.
Term 46
Extended Detection and Response (XDR) is a security approach that collects and analyzes data from multiple sources like endpoints, networks, servers, and email to detect and stop threats more effectively.
Term 47
Extended File Allocation Table (exFAT) is a file system created by Microsoft that allows very large files and large storage volumes to be used across different operating systems like Windows and macOS.
Term 48
The Extended File System (ext) is a foundational file system family used in Linux operating systems to organize and manage data on storage devices.
Term 49
External Serial Advanced Technology Attachment is a standard interface for connecting external storage devices like hard drives and SSDs to a computer using a high-speed serial cable.
Term 50
Facial recognition technology is a biometric security method that identifies or verifies a person by analyzing and comparing patterns of their facial features.
Term 51
File Transfer Protocol (FTP) is a standard network protocol used to transfer files between a client and a server over a TCP/IP network.
Term 52
A Fully Qualified Domain Name is the complete and unambiguous website or server name that includes the host, domain, and top-level domain, leaving no room for guesswork.
Term 53
Function as a Service (FaaS) is a cloud computing model that lets you run small pieces of code in response to events without managing servers or infrastructure.
Term 54
A satellite-based navigation system that provides location and time information to a receiver anywhere on Earth, as long as it has a clear line of sight to the sky.
Term 55
A tape backup rotation scheme where three sets of backup media are used: daily (son), weekly (father), and monthly (grandfather) to balance storage cost and data recovery capability.
Term 56
A visual way for users to interact with a computer using icons, menus, and windows instead of typing text commands.
Term 57
A specialized electronic circuit designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display.
Term 58
A GUID is a 128-bit identifier used to uniquely identify resources across all systems and networks.
Term 59
A GUID Partition Table (GPT) is a modern standard for organizing and managing partitions on a storage drive, replacing the older Master Boot Record (MBR) system.
Term 60
A hard disk drive (HDD) is a data storage device that uses spinning magnetic platters and a moving read/write head to store and retrieve digital information.