1. What is Document ? Junior A. the basic unit of storage in Firestore, a set of key-value fields living inside a collection B. a startAt or startAfter pagination marker that resumes results from a specific document position C. a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit D. an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling
2. Which term means: "the basic unit of storage in Firestore, a set of key-value fields living inside a collection"? Junior A. WriteBatch B. Collection C. Document D. Subcollection
3. Which statement is correct? Junior A. Document — a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit B. Document — a container that holds documents and cannot itself store raw fields, only nested records C. Document — a collection nested under a single document, used to model hierarchical one-to-many relationships D. Document — the basic unit of storage in Firestore, a set of key-value fields living inside a collection
4. What is Collection ? Junior A. the basic unit of storage in Firestore, a set of key-value fields living inside a collection B. a collection nested under a single document, used to model hierarchical one-to-many relationships C. a container that holds documents and cannot itself store raw fields, only nested records D. a startAt or startAfter pagination marker that resumes results from a specific document position
5. Which term means: "a container that holds documents and cannot itself store raw fields, only nested records"? Junior A. WriteBatch B. Composite index C. Collection D. Real-time listener
6. Which statement is correct? Junior A. Collection — a multi-field index that must be created so queries filtering or ordering on more than one field can run B. Collection — a container that holds documents and cannot itself store raw fields, only nested records C. Collection — an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling D. Collection — a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit
7. What is Subcollection ? Mid A. the basic unit of storage in Firestore, a set of key-value fields living inside a collection B. a multi-field index that must be created so queries filtering or ordering on more than one field can run C. a collection nested under a single document, used to model hierarchical one-to-many relationships D. a container that holds documents and cannot itself store raw fields, only nested records
8. Which term means: "a collection nested under a single document, used to model hierarchical one-to-many relationships"? Mid A. Subcollection B. Composite index C. Query cursor D. Real-time listener
9. Which statement is correct? Mid A. Subcollection — a container that holds documents and cannot itself store raw fields, only nested records B. Subcollection — a startAt or startAfter pagination marker that resumes results from a specific document position C. Subcollection — a collection nested under a single document, used to model hierarchical one-to-many relationships D. Subcollection — a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit
10. What is Real-time listener ? Mid A. a startAt or startAfter pagination marker that resumes results from a specific document position B. the basic unit of storage in Firestore, a set of key-value fields living inside a collection C. a container that holds documents and cannot itself store raw fields, only nested records D. an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling
11. Which term means: "an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling"? Mid A. Subcollection B. Real-time listener C. Document D. Query cursor
12. Which statement is correct? Mid A. Real-time listener — a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit B. Real-time listener — an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling C. Real-time listener — a multi-field index that must be created so queries filtering or ordering on more than one field can run D. Real-time listener — a startAt or startAfter pagination marker that resumes results from a specific document position
13. What is Composite index ? Senior A. a startAt or startAfter pagination marker that resumes results from a specific document position B. the basic unit of storage in Firestore, a set of key-value fields living inside a collection C. a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit D. a multi-field index that must be created so queries filtering or ordering on more than one field can run
14. Which term means: "a multi-field index that must be created so queries filtering or ordering on more than one field can run"? Senior A. Subcollection B. Composite index C. Document D. Query cursor
15. Which statement is correct? Senior A. Composite index — a container that holds documents and cannot itself store raw fields, only nested records B. Composite index — a multi-field index that must be created so queries filtering or ordering on more than one field can run C. Composite index — an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling D. Composite index — a collection nested under a single document, used to model hierarchical one-to-many relationships
16. What is Query cursor ? Senior A. the basic unit of storage in Firestore, a set of key-value fields living inside a collection B. a startAt or startAfter pagination marker that resumes results from a specific document position C. a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit D. a container that holds documents and cannot itself store raw fields, only nested records
17. Which term means: "a startAt or startAfter pagination marker that resumes results from a specific document position"? Senior A. Document B. Query cursor C. WriteBatch D. Real-time listener
18. Which statement is correct? Senior A. Query cursor — an onSnapshot subscription that pushes updates to clients whenever matching data changes, instead of polling B. Query cursor — a collection nested under a single document, used to model hierarchical one-to-many relationships C. Query cursor — the basic unit of storage in Firestore, a set of key-value fields living inside a collection D. Query cursor — a startAt or startAfter pagination marker that resumes results from a specific document position
19. What is WriteBatch ? Mid A. a multi-field index that must be created so queries filtering or ordering on more than one field can run B. a container that holds documents and cannot itself store raw fields, only nested records C. a startAt or startAfter pagination marker that resumes results from a specific document position D. a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit
20. Which term means: "a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit"? Mid A. Subcollection B. Document C. Query cursor D. WriteBatch
21. Which statement is correct? Mid A. WriteBatch — a collection nested under a single document, used to model hierarchical one-to-many relationships B. WriteBatch — a startAt or startAfter pagination marker that resumes results from a specific document position C. WriteBatch — the basic unit of storage in Firestore, a set of key-value fields living inside a collection D. WriteBatch — a grouping of up to 500 set, update, or delete operations committed together as a single atomic unit