Term 331
Graphics Processing Unit
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.
Acronym study
Terms 331–360 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 331
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 332
GRE (Generic Routing Encapsulation) is a tunneling protocol that encapsulates packets inside other packets to transport them across incompatible networks.
Term 333
Generic Routing Encapsulation is a tunneling protocol that wraps packets of one protocol inside another protocol to transport them across an intermediary network.
Term 334
A GUID is a 128-bit identifier used to uniquely identify resources across all systems and networks.
Term 335
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 336
Half duplex is a data transmission mode that allows communication in both directions, but only one direction at a time, like a walkie-talkie.
Term 337
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.
Term 338
Hashing is a one-way mathematical function that converts any input data into a fixed-length string of characters, called a hash or digest, which is used to verify data integrity and store passwords securely.
Term 339
A Hard Disk Drive (HDD) is a data storage device that uses spinning magnetic disks to read and write digital information.
Term 340
A heat sink is a piece of metal attached to a computer component that pulls heat away from it and spreads it into the air so the part does not overheat.
Term 341
A Hello packet is a small OSPF message sent by routers to discover neighboring routers, establish and maintain neighbor relationships, and elect a Designated Router on multiaccess networks.
Term 342
The Hello timer is the interval at which an OSPF router sends Hello packets to discover and maintain neighbor relationships on a network segment.
Term 343
High availability is a system design approach that aims to keep applications and services operational and accessible with minimal downtime, even when some components fail.
Term 344
A network device condition where processor utilisation reaches levels that degrade performance or cause service interruptions.
Term 345
High Definition (HD) refers to a display resolution or video quality that is significantly higher than standard definition, typically starting at 1280x720 pixels (720p).
Term 346
High disk usage is a condition where a computer's storage drive is working near or at its maximum capacity, causing slow performance, lag, or unresponsiveness.
Term 347
A standard cable and connector used to send high-quality video and audio from one device to another, like from a laptop to a monitor or TV.
Term 348
HMAC (Hash-based Message Authentication Code) is a mechanism that uses a cryptographic hash function together with a secret key to verify both the integrity and authenticity of a message.
Term 349
A hosted zone is a container for DNS records that holds the information needed to route internet traffic for a domain name.
Term 350
A command-line tool in Linux that allows users to view and change the system hostname and related network identification settings without editing configuration files manually.
Term 351
Hot Standby Router Protocol (HSRP) is a Cisco-proprietary protocol that provides first-hop redundancy by allowing a backup router to automatically take over if the primary router fails.
Term 352
A drive that can be removed and replaced without powering down the computer or system it is connected to.
Term 353
HSRP stands for Hot Standby Router Protocol, a Cisco proprietary protocol that allows multiple routers to work together as a single virtual router to provide default gateway redundancy.
Term 354
HTTP stands for Hypertext Transfer Protocol, the set of rules web browsers and servers use to communicate and transfer web pages over the internet.
Term 355
A network device or software that distributes incoming web traffic across multiple servers using HTTP or HTTPS protocols to ensure high availability, reliability, and performance.
Term 356
HTTPS (Hypertext Transfer Protocol Secure) is the secure version of HTTP that encrypts data between a web browser and a web server using SSL/TLS protocols.
Term 357
A hub is a basic networking device that connects multiple computers or devices together so they can communicate, but it sends all data to every connected port without filtering.
Term 358
A hybrid cloud is a computing environment that combines a private cloud (on-premises infrastructure) with one or more public cloud services, allowing data and applications to be shared between them.
Term 359
Hypertext Transfer Protocol (HTTP) is the foundational communication protocol used to transfer web pages and other data between a web browser and a web server over the internet.
Term 360
A hypervisor is software that creates and runs virtual machines by allowing multiple operating systems to share a single hardware host.