Explains why the availability of components in series is the product of their availabilities
https://knobit.org/id/knobit/O-1903
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| Context functions | Object understanding |
|---|---|
| Knobit creation methods | AI generated |
| Knobit types | Knowledge |
| LCG purposes | Assessing the learner's knowledge or skill state |
| LCG purposes | Opening up a learning outcome |
| action verb | Explains en |
| assessment criterion | Computes the availability of a chain of independent components as the product and states the independence it assumes en |
| assessment method | Multiple-choice question en |
| conforms to profile | https://oppekava.edu.ee/a/Knobitite_kirjeldamise_ja_seostamise_reeglid#LCG-KNOBIT-0.1 |
| dcterms:identifier | O-1903 |
| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
| dcterms:source | Part B candidate of k12-dmbok for activity OV-11 (a need for school knowledge no knobit of the activity reached), accepted by Peep Küngas on 31 Oct 2026 en |
| depends on knobit | Explains the meaning of the product of dependent and independent events |
| expected result | Composed availability as the product of independent component availabilities, with the independence assumption stated en |
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/knobit/data-storage-operations/dmbok2/O-1903 |
| rdfs:label | Explains why the availability of components in series is the product of their availabilities en |
| schema:creativeWorkStatus | accepted |
| schema:isPartOf | Data storage and operations (DAMA-DMBOK2) |
| skos:definition | A chain works only when every component works; if components fail independently, the probability that all work is the product of their availabilities (0.999 x 0.995 = 0.994); dependent failures need the conditional probability instead. en |
| skos:prefLabel | Explains why the availability of components in series is the product of their availabilities en |
| target object | availability of components in series as a probability en |
Used by
| applies knowledge | Composes availability across a dependency chain |
|---|---|
| depends on knobit | Explains composing service levels from components |
| includes knobit | Service levels and performance |