Term 241
Diamond model
The Diamond model is a framework for analyzing cybersecurity intrusions by examining four key components: adversary, capability, infrastructure, and victim.
Acronym study
Terms 241–270 of 956 220-1102 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 241
The Diamond model is a framework for analyzing cybersecurity intrusions by examining four key components: adversary, capability, infrastructure, and victim.
Term 242
A differential backup copies all data that has changed since the last full backup, growing in size with each new backup until the next full backup is performed.
Term 243
A digital identity is the online representation of a person, device, or entity used to authenticate and authorize access to digital resources.
Term 244
Digital Rights Management (DRM) is a set of technologies used to control how digital content like music, movies, ebooks, or software is accessed, copied, or shared.
Term 245
Digital Subscriber Line (DSL) is a technology that uses ordinary copper telephone wires to provide high-speed internet access to homes and businesses.
Term 246
Digital transformation is the process of using digital technology to fundamentally change how a business operates and delivers value to customers.
Term 247
Digital Visual Interface is a video display interface used to connect a video source, like a computer, to a monitor or projector, transmitting uncompressed digital video signals for clear, high-quality images.
Term 248
AWS Direct Connect is a cloud service that lets you create a dedicated private network link from your on-premises data center to AWS, bypassing the public internet for more consistent and secure connectivity.
Term 249
Disaster recovery is a set of policies, procedures, and tools that help an organization restore critical IT systems and data after a disruptive event.
Term 250
A Disaster Recovery Plan (DRP) is a documented, structured approach that outlines how an organization can quickly resume critical IT systems and operations after a disruptive event.
Term 251
Disk Management is a system utility that lets you manage hard drives and other storage devices, including partitioning, formatting, and assigning drive letters.
Term 252
A cyberattack where many compromised computers flood a target system with traffic, making it unavailable to legitimate users.
Term 253
A DLL error is a message that appears when a Windows program cannot find or properly use a Dynamic Link Library file it needs to run.
Term 254
A DLP policy is a set of rules that an organization uses to prevent sensitive data from being lost, stolen, or accidentally exposed, whether it is in use, in motion, or at rest.
Term 255
A DMZ (demilitarized zone) is a network segment that sits between an internal private network and the public internet, hosting publicly accessible services while keeping the internal network isolated.
Term 256
DNS is the system that translates human-friendly domain names like example.com into machine-readable IP addresses so computers can find each other on a network.
Term 257
A DNS log is a record of all Domain Name System queries and responses that pass through a server, providing a trail of which domains were requested, by whom, and when.
Term 258
DNS over HTTPS is a protocol that sends Domain Name System queries and responses over the encrypted HTTPS protocol to protect user privacy and prevent tampering.
Term 259
DNS over TLS encrypts DNS queries using the Transport Layer Security protocol to prevent eavesdropping and tampering.
Term 260
DNS poisoning is a cyberattack that corrupts a DNS resolver's cache with false information, redirecting users to malicious websites without their knowledge.
Term 261
DNSSEC adds cryptographic signatures to DNS records to ensure data authenticity and integrity, preventing cache poisoning and spoofing attacks.
Term 262
DoH encrypts DNS queries within HTTPS traffic to prevent eavesdropping and manipulation of domain name resolution.
Term 263
A set of protocols that add digital signatures to DNS data to verify its authenticity and integrity.
Term 264
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 265
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 266
A cyberattack that floods a target with traffic or requests to exhaust its resources, making it unavailable to legitimate users.
Term 267
DNS over TLS (DoT) encrypts DNS queries using TLS, ensuring privacy and integrity between clients and resolvers.
Term 268
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 269
Drive wiping is the process of completely and permanently erasing all data on a storage drive so that it cannot be recovered.
Term 270
Driver rollback is a Windows tool that reverts a device driver to its previous version to fix problems caused by a recent driver update.