Hardened Repository
A strengthened backup repository against malicious deletion or modification.
View definitionIT Dictionary
Clear, practical definitions to understand network, security, systems and IT vocabulary.
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1,058matching definitions · 1,058 in the dictionary
Hardware Virtualization
Hardware virtualization uses processor features to let a hypervisor run isolated virtual machines efficiently.
View definitionHashing
Understand cryptographic hashes, integrity checks and password hashing, including why a digest is not encrypted data.
View definitionHEAD Method HTTP
The HTTP HEAD method retrieves response headers equivalent to GET without transferring the response body.
View definitionHealth Check SD-WAN
A probe that measures availability, latency, loss and gigue of a link WAN.
View definitionHelm
A package manager for Kubernetes based on configurable charts.
View definitionHierarchical Escalation
Hierarchical escalation alerts management when an incident's priority, risk, or resolution time requires higher-level decisions.
View definitionHigh Availability
High Availability (HA) keeps an IT service accessible through selected failures using redundancy, health monitoring and failover to a working resource...
View definitionHigh-Watermark Vector
Active Directory replication metadata that records the highest USN already received from a partner for a given partition
View definitionHOTP
A one-time code based on a shared counter rather than time.
View definitionHSRP
A red-Dandon bridge protocol
View definitionHSTS
HSTS requires the browser to use HTTPS for a specified time
View definitionHTTP
The protocol used to exchange resources between a web client and a server.
View definitionHTTP Cache
HTTP caching stores reusable responses according to cache headers, validators, and freshness rules.
View definitionHTTP Header
An HTTP header is a field carrying metadata about a request or response, such as content type or caching rules.
View definitionHTTP Keep-Alive
HTTP keep-alive reuses a network connection for multiple requests instead of opening a connection each time.
View definitionHTTP Method
An HTTP method identifies the requested operation on a resource, such as GET, POST, PUT, PATCH, or DELETE.
View definitionHTTP Persistent Connection
An HTTP persistent connection handles multiple requests over one transport connection to reduce connection overhead.
View definitionHTTP Range Request
An HTTP range request retrieves selected byte segments of a resource, useful for downloads and media seeking.
View definitionHTTP Request
An HTTP request specifies a method, target resource, headers, and optionally a body sent by a client.
View definitionHTTP Response
An HTTP response carries a status code, headers, and optionally a representation body returned by a server.
View definitionHTTP Status Code
An HTTP status code is a three-digit result indicating whether a request succeeded, redirected, or encountered an error.
View definitionHTTP/3
HTTP/3 is a version of HTTP using QUIC in place of TCP.
View definitionHTTP/3 0-RTT
HTTP/3 can use QUIC's 0-RTT resumption to reduce connection setup latency, subject to replay-related limitations.
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