Chapter quiz · Ember Data

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8 questions on Ember Data. Pass 70% to clear the chapter.

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Quiz

Ember Data — Chapter Quiz

Eight questions on the store, models, relationships, adapters, and JSON-API.

0/ 9

Question 1
1
Where do you typically inject the Ember Data store?
ARoutes, controllers, components, and servicesBOnly routesCOnly servicesDTemplates only
The store service is injected with @service store anywhere you need to load or persist records — routes, controllers, components, services.
Question 2
2
Which decorator declares a primitive attribute on a model?
A@fieldB@attrC@propD@column
@attr('string'), @attr('number'), @attr('boolean'), @attr('date') declare typed primitive fields on a model.
Question 3
3
How do you fetch one record by id?
Athis.store.find('post', id)Bthis.store.findRecord('post', id)Cthis.store.get('post', id)Dthis.store.byId('post', id)
findRecord(type, id) returns a promise for one record. For all records, use findAll(type); for filtered queries, use query(type, params).
Question 4
4
An adapter is responsible for converting record requests into HTTP calls.
TTrueFFalse
Adapters define how the store talks to your API — URL building, HTTP method, headers. The default is JSONAPIAdapter.
Question 5
5
Which is the default serializer in modern Ember Data?
ARESTSerializerBActiveModelSerializerCJSONAPISerializerDXMLSerializer
Ember Data's default is JSON-API — JSONAPISerializer for shape translation and JSONAPIAdapter for transport. Custom backends override with their own.
Question 6
6
The decorator that declares a one-to-one relationship on a model is @___.
@belongsTo('author') author declares the parent side of a 1:1 or many-to-1 relationship. Use @hasMany for collections.
Question 7
7
Which calls return data from the Ember Data store?
Select all that apply.
Astore.findRecord('post', 1)Bstore.findAll('post')Cstore.query('post', { tag: 'js' })Dstore.peekRecord('post', 1)Estore.persistAll('post')
findRecord/findAll/query hit the network; peekRecord reads what is already in the local cache. persistAll is not an API.
Question 8
8
What is JSON-API in one sentence?
AA specification for how to format JSON request and response payloads, including relationships and metadataBA JavaScript library for parsing JSON fasterCA SOAP replacement for XMLDA proprietary Ember-only format
JSON-API (jsonapi.org) is an open spec for JSON payload shapes with built-in support for relationships, includes, sparse fields, and pagination. Ember Data implements it by default.