Term 301
DNS poisoning
DNS poisoning is a cyberattack that corrupts a DNS resolver's cache with false information, redirecting users to malicious websites without their knowledge.
Acronym study
Terms 301–330 of 1001 Cloud Digital Leader 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 301
DNS poisoning is a cyberattack that corrupts a DNS resolver's cache with false information, redirecting users to malicious websites without their knowledge.
Term 302
DNSSEC adds cryptographic signatures to DNS records to ensure data authenticity and integrity, preventing cache poisoning and spoofing attacks.
Term 303
Document AI is a Google Cloud service that uses machine learning to extract, analyze, and organize information from documents like PDFs and images.
Term 304
Amazon DocumentDB is a fully managed, MongoDB-compatible document database service that stores, queries, and indexes JSON-like data for scalable applications.
Term 305
DoH encrypts DNS queries within HTTPS traffic to prevent eavesdropping and manipulation of domain name resolution.
Term 306
A set of protocols that add digital signatures to DNS data to verify its authenticity and integrity.
Term 307
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 308
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 309
A cyberattack that floods a target with traffic or requests to exhaust its resources, making it unavailable to legitimate users.
Term 310
DNS over TLS (DoT) encrypts DNS queries using TLS, ensuring privacy and integrity between clients and resolvers.
Term 311
Due care is the legal and ethical duty of an organization to take reasonable steps to protect sensitive information and IT systems from harm.
Term 312
Due diligence is the process of systematically reviewing and verifying information, policies, and procedures to identify and manage risks before making a decision or taking an action in an IT or security context.
Term 313
Dumpster diving is the practice of searching through trash to find discarded information or equipment that can be used to compromise security.
Term 314
Dynamic ARP Inspection is a security feature that validates ARP packets on a network to prevent man-in-the-middle attacks by ensuring that only legitimate ARP messages are forwarded.
Term 315
Dynamic NAT is a method of mapping multiple private IP addresses to a pool of public IP addresses automatically, allowing many devices to share a limited number of public addresses.
Term 316
EAL, or Evaluation Assurance Level, is a numeric rating from 1 to 7 that measures how thoroughly a computer product has been tested for security, with higher numbers indicating more rigorous testing.
Term 317
EAP is a flexible authentication framework used in network access control, supporting multiple methods like passwords, certificates, and tokens.
Term 318
EAPoL is a network authentication protocol that encapsulates EAP frames over IEEE 802 LANs, enabling port-based access control.
Term 319
EBS encryption is a security feature that automatically encrypts data stored on Amazon Elastic Block Store volumes, protecting it at rest and in transit between the volume and the attached EC2 instance.
Term 320
An EBS snapshot is a point-in-time backup of an Amazon Elastic Block Store volume that you can use for recovery, cloning, or migration.
Term 321
Amazon Elastic Block Store (EBS) volume types are different categories of block-level storage volumes optimized for specific performance, cost, and use case requirements in the AWS cloud.
Term 322
Economies of scale is the cost advantage that businesses get when production becomes more efficient as they grow larger, reducing the cost per unit.
Term 323
Amazon Elastic Container Registry (ECR) is a fully managed Docker container registry that stores, manages, and deploys container images securely.
Term 324
An edge location is a site deployed by a content delivery network that caches copies of data closer to users to reduce latency and improve access speed.
Term 325
An edge network is a distributed computing architecture that brings data processing and storage closer to the physical location where data is generated, rather than relying on a central data center.
Term 326
eDiscovery is the process of identifying, collecting, and producing electronic information for legal cases or investigations.
Term 327
Endpoint Detection and Response (EDR) is a cybersecurity technology that continuously monitors endpoint devices to detect, investigate, and respond to advanced threats.
Term 328
An EDR alert is a notification generated by Endpoint Detection and Response software when it detects potentially malicious activity or an anomaly on a device like a laptop, server, or workstation.
Term 329
An Elastic Load Balancer automatically distributes incoming application or network traffic across multiple targets, such as Amazon EC2 instances, containers, or IP addresses, in one or more Availability Zones.
Term 330
Amazon ElastiCache is a fully managed, in-memory caching service that speeds up data retrieval from databases and applications by storing frequently accessed data in memory.