Term 31
AP
An AP (Access Point) bridges wireless clients to a wired network, acting as a central transceiver and controller for Wi-Fi communications.
Acronym study
Terms 31–60 of 1033 N10-009 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
An AP (Access Point) bridges wireless clients to a wired network, acting as a central transceiver and controller for Wi-Fi communications.
Term 32
An API is a set of rules that allows software applications to communicate and exchange data with each other.
Term 33
APIPA is a Windows feature that automatically assigns a private IP address (169.254.x.x) to a device when a DHCP server is unavailable, allowing limited local network communication.
Term 34
Apple File System (APFS) is a modern file system designed by Apple for macOS, iOS, and other Apple devices, optimized for flash storage and strong encryption.
Term 35
An application crash is when a software program stops working unexpectedly and either closes, freezes, or becomes unresponsive.
Term 36
An Application Gateway is a network device or cloud service that manages and secures traffic between users and web applications by applying rules, routing requests, and offloading tasks like SSL encryption.
Term 37
A set of rules and tools that allows one software program to talk to another, like a messenger between applications.
Term 38
An Application Security Group (ASG) is a cloud networking feature that groups virtual machines logically and allows you to apply security rules based on the application workload, rather than individual IP addresses.
Term 39
Area 0 is the backbone area in OSPF routing that connects all other OSPF areas to ensure a loop-free and efficient network routing topology.
Term 40
An ARM template is a JSON file that defines the infrastructure and configuration for Azure resources, enabling repeatable and consistent deployments.
Term 41
Address Resolution Protocol (ARP) is a network protocol used to map a device's IP address to its physical MAC address so data can be delivered correctly on a local network.
Term 42
ARP poisoning is a network attack where an attacker sends fake Address Resolution Protocol messages to link their MAC address with a legitimate IP address, enabling them to intercept, modify, or stop data on a local network.
Term 43
An ARP reply is a network response sent by a device to answer an ARP request, providing its MAC address so the requesting device can map an IP address to a physical hardware address on a local network.
Term 44
An ARP request is a network broadcast message sent by a device to discover the hardware (MAC) address of another device on the same local network given its IP address.
Term 45
An ARP table is a data structure stored on a network device that maps IP addresses to their corresponding MAC addresses, enabling communication within a local network.
Term 46
An Availability Set is a logical grouping of virtual machines in Azure that helps ensure high availability by distributing VMs across different physical hardware within a datacenter.
Term 47
Asset management is the process of tracking and maintaining all the hardware and software items a company owns throughout their entire life cycle.
Term 48
Asymmetric encryption is a cryptographic method that uses a pair of keys—a public key for encryption and a private key for decryption—to securely exchange data without sharing a secret.
Term 49
ATX is a standard specification for the physical layout, power supply, and connectors inside a desktop computer case and motherboard.
Term 50
An Audio Processing Unit (APU) is a dedicated processor designed specifically to handle all sound-related tasks in a computer or device, freeing up the main CPU for other work.
Term 51
An Acceptable Use Policy (AUP) is a set of rules that define how users are allowed to access and use a company's network, devices, and internet connection.
Term 52
An Auto Scaling group is a logical collection of EC2 instances that automatically adjusts the number of instances based on demand, ensuring availability and cost efficiency.
Term 53
Auto-negotiation is an Ethernet feature that allows two connected devices to automatically agree on the best possible speed and duplex mode for their link.
Term 54
An Automatic Document Feeder (ADF) is a hardware component in scanners, printers, and copiers that automatically feeds multiple pages of a document for scanning or copying without manual intervention.
Term 55
A fallback method used by a device to automatically assign itself an IP address when it cannot obtain one from a DHCP server.
Term 56
An Autonomous System (AS) is a large network or group of networks under a single administrative control that presents a unified routing policy to the internet.
Term 57
Availability is the measure of how often a system or service is operational and accessible when needed, typically expressed as a percentage of uptime.
Term 58
An Availability Zone is a distinct, isolated location within a cloud region that contains its own power, cooling, and networking, designed to protect applications from single points of failure.
Term 59
AWS Backup is a fully managed service that centralizes and automates data backups across multiple AWS services, enabling you to define backup policies, monitor activity, and restore data from a single dashboard.
Term 60
AWS Cloud is a comprehensive on-demand cloud computing platform provided by Amazon that offers a wide range of services including computing power, storage, and databases, allowing businesses to scale and innovate without managing physical hardware.