Device types Matter: exam questions with worked answers

Questions for the "Device types" topic

1. Q01

   Matter Spec 1.0 already supports the core residential device types: OnOff Light, Dimmable Light, Color Temperature Light, Extended Color Light (RGB), Smart Plug, Door Lock, Contact Sensor, Motion Sensor, Window Covering, Thermostat and more.

   TrueFalse

   4. Device types· Gerätekategorien· Medium

   ▸

   Correct answer

   True

   Learning tip

   The Spec 1.0 release covered the residential core: lighting in four flavours (OnOff, Dimmable, Color Temperature, Extended Color), Smart Plug, Door Lock, the common sensor family (Contact for doors and windows, PIR Motion, Temperature, Humidity, Illuminance), Window Covering for blinds and shutters, and Thermostat. Subsequent releases broadened the catalogue: Spec 1.1 and 1.2 added Robot Vacuum, Smoke and CO alarms, Air Quality, Ovens and Washing Machines, Spec 1.3 brought energy management and EV charging, and Spec 1.4 introduced cameras and advanced presence detection.

   View the full question page →
2. Q02

   A Matter device implements several Clusters (functional building blocks) according to its device type: OnOff Cluster for switching, Level Control for dimming, Color Control for RGB, and so on; each Cluster exposes Attributes for state readout and Commands for actions.

   TrueFalse

   4. Device types· Cluster· Hard

   ▸

   Correct answer

   True

   Learning tip

   The Cluster model is the heart of Matter's data plane. The OnOff Cluster (0x0006) exposes a boolean OnOff attribute and the On, Off and Toggle commands. The Level Control Cluster (0x0008) exposes CurrentLevel from 0 to 254 and commands such as MoveToLevel and Step. The Color Control Cluster (0x0300) handles XY, Hue, Saturation and Color Temperature. Device types are defined by composition: an Extended Color Light must implement OnOff plus Level Control plus Color Control, which gives identical command semantics across every vendor that ships that device type.

   View the full question page →