While configuring a Linux-based monitoring platform, an administrator considers replacing periodic REST polling with a webhook integration. Which statement accurately describes how a webhook delivers alert data to a downstream incident-management service?
It streams all monitoring data continuously through a persistent SSH tunnel initiated by the monitoring server.
It expects the incident-management service to poll the monitoring API at fixed intervals using HTTP GET requests.
It sends unsolicited UDP datagrams on port 162 that reference MIB object identifiers for every event.
It uses an HTTP or HTTPS POST to push a JSON-formatted payload to a registered URL only when the alert state changes.
A webhook follows a push model. When a defined event (for example, an alert changing state) occurs, the monitoring system immediately issues an HTTP/HTTPS POST request that contains the event payload-commonly formatted as JSON-to a pre-configured URL on the incident-management service. No long-lived connection or periodic polling is required, and the receiver need only listen for those inbound requests. The incorrect options reflect other mechanisms: polling requires the receiver to pull data; a persistent SSH stream is unrelated to webhooks; and UDP/port-162 traffic with MIB OIDs describes SNMP traps, not webhooks.
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CompTIA Linux+ XK0-006 (V8)
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