Term 721
Reserved Instance
A Reserved Instance is a billing discount applied to your usage of virtual machines or other compute resources when you commit to using a specific configuration for a one- or three-year term.
Acronym study
Terms 721–750 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 721
A Reserved Instance is a billing discount applied to your usage of virtual machines or other compute resources when you commit to using a specific configuration for a one- or three-year term.
Term 722
Residual risk is the level of risk that remains after all security controls and countermeasures have been applied.
Term 723
Resource hierarchy is the structured, parent-child ordering of cloud resources that governs access control, policy inheritance, and resource organization across a cloud platform.
Term 724
A framework of ethical principles and practices that ensure artificial intelligence systems are developed and deployed in a transparent, fair, accountable, and safe manner.
Term 725
A retention label is a tag applied to emails, documents, or files in Microsoft 365 that tells the system how long to keep the item and what to do with it when the time is up.
Term 726
A retention policy is a set of rules that determines how long an organization keeps its data and what happens to it when the retention period expires.
Term 727
RFID uses radio waves to wirelessly identify and track tags attached to objects, enabling automatic data capture without line-of-sight.
Term 728
Right-sizing is the process of optimizing IT resources such as compute, memory, storage, and network capacity to match actual workload requirements, preventing both overprovisioning and underprovisioning.
Term 729
Risk acceptance is a risk management strategy where an organization acknowledges a potential risk but decides to tolerate it without taking active measures to reduce or eliminate it.
Term 730
Risk assessment is the process of identifying, analyzing, and evaluating potential threats to an organization's assets to determine the likelihood and impact of those threats, and to decide on appropriate treatment measures.
Term 731
Risk avoidance is a risk management strategy that involves eliminating any activity, process, or technology that introduces a specific risk, rather than trying to reduce or accept it.
Term 732
Risk management is the process of identifying, assessing, and controlling threats to an organization's capital, earnings, and operations, including IT systems and data.
Term 733
Risk mitigation is the process of reducing the likelihood or impact of a potential security threat to an acceptable level through specific controls and actions.
Term 734
A risk score is a numerical value that represents the level of risk associated with a given asset, threat, or vulnerability in a security context.
Term 735
Risk transfer is the practice of shifting the financial burden of a potential loss to another party, typically through insurance or contracts.
Term 736
Risk-based access is a security model that dynamically adjusts access permissions based on the assessed risk of each access request, rather than granting a static level of access to all users.
Term 737
RJ45 is a standardized physical connector used to plug Ethernet cables into computers, routers, switches, and other networking devices.
Term 738
A Rogue Access Point is an unauthorized wireless access point connected to a network without the network administrator's permission, creating a serious security vulnerability.
Term 739
The root user is the superuser on Linux and Unix-like systems with unrestricted permissions to execute any command and access any file on the system.
Term 740
A rootkit is a type of malware that hides its presence and the presence of other malicious software on a computer, often by modifying the operating system itself.
Term 741
Route 53 is Amazon Web Services’ cloud-based Domain Name System (DNS) web service that translates human-readable domain names into IP addresses and routes end-user requests to internet applications.
Term 742
A Route 53 health check is a feature of Amazon Route 53 DNS service that monitors the availability and performance of an endpoint, such as a web server, from multiple global locations to automatically route traffic away from failures.
Term 743
A route table is a set of rules, called routes, that determine where network traffic from a subnet or virtual network is directed.
Term 744
A router is a networking device that connects different networks together and directs data traffic between them by choosing the best path for data to travel.
Term 745
A row is a horizontal record in a database table that contains all the information about a single entity, like one customer or one product.
Term 746
Recovery Point Objective (RPO) is the maximum acceptable amount of data loss measured in time, defining how recent data must be to resume operations after a disruption.
Term 747
Recovery Time Objective is the maximum acceptable time to restore a system or data after a disaster, defining how quickly normal operations must resume.
Term 748
An S3 bucket policy is a JSON-based resource-based access control document that defines who can access an Amazon S3 bucket and its objects, and what actions they can perform.
Term 749
S3 event notification is an AWS feature that automatically sends a message to a destination service when a specific event occurs in an Amazon S3 bucket.
Term 750
Amazon S3 Glacier is a secure, durable, and extremely low-cost cloud storage service designed for long-term data archiving and backup, where data is rarely accessed but must be retained for months or years.