1. What is Collection ? Junior A. a grouping of documents that plays the role a table does in a relational database B. a single index built over several fields whose ordering determines which query prefixes it can satisfy C. a sequence of stages such as match, group, and project that transforms documents step by step D. the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals
2. Which term means: "a grouping of documents that plays the role a table does in a relational database"? Junior A. _id B. Aggregation pipeline C. BSON D. Collection
3. Which statement is correct? Junior A. Collection — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals B. Collection — a single index built over several fields whose ordering determines which query prefixes it can satisfy C. Collection — a grouping of documents that plays the role a table does in a relational database D. Collection — the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId
4. What is Document ? Junior A. a grouping of documents that plays the role a table does in a relational database B. the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId C. a single index built over several fields whose ordering determines which query prefixes it can satisfy D. a single record stored as a set of field-and-value pairs in a flexible nested structure
5. Which term means: "a single record stored as a set of field-and-value pairs in a flexible nested structure"? Junior A. _id B. Document C. BSON D. Collection
6. Which statement is correct? Junior A. Document — a single record stored as a set of field-and-value pairs in a flexible nested structure B. Document — a single index built over several fields whose ordering determines which query prefixes it can satisfy C. Document — a sequence of stages such as match, group, and project that transforms documents step by step D. Document — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals
7. What is BSON ? Mid A. a single record stored as a set of field-and-value pairs in a flexible nested structure B. a sequence of stages such as match, group, and project that transforms documents step by step C. the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals D. a grouping of documents that plays the role a table does in a relational database
8. Which term means: "the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals"? Mid A. Compound index B. BSON C. _id D. Document
9. Which statement is correct? Mid A. BSON — a single record stored as a set of field-and-value pairs in a flexible nested structure B. BSON — a sequence of stages such as match, group, and project that transforms documents step by step C. BSON — a single index built over several fields whose ordering determines which query prefixes it can satisfy D. BSON — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals
10. What is Aggregation pipeline ? Mid A. a sequence of stages such as match, group, and project that transforms documents step by step B. a grouping of documents that plays the role a table does in a relational database C. a single record stored as a set of field-and-value pairs in a flexible nested structure D. the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId
11. Which term means: "a sequence of stages such as match, group, and project that transforms documents step by step"? Mid A. Document B. Compound index C. BSON D. Aggregation pipeline
12. Which statement is correct? Mid A. Aggregation pipeline — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals B. Aggregation pipeline — a single record stored as a set of field-and-value pairs in a flexible nested structure C. Aggregation pipeline — a sequence of stages such as match, group, and project that transforms documents step by step D. Aggregation pipeline — a single index built over several fields whose ordering determines which query prefixes it can satisfy
13. What is _id ? Junior A. a grouping of documents that plays the role a table does in a relational database B. the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals C. a single index built over several fields whose ordering determines which query prefixes it can satisfy D. the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId
14. Which term means: "the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId"? Junior A. _id B. Collection C. Document D. BSON
15. Which statement is correct? Junior A. _id — the mandatory unique primary-key field automatically added to every document, defaulting to an ObjectId B. _id — a single record stored as a set of field-and-value pairs in a flexible nested structure C. _id — a single index built over several fields whose ordering determines which query prefixes it can satisfy D. _id — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals
16. What is Compound index ? Senior A. a single index built over several fields whose ordering determines which query prefixes it can satisfy B. a single record stored as a set of field-and-value pairs in a flexible nested structure C. the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals D. a grouping of documents that plays the role a table does in a relational database
17. Which term means: "a single index built over several fields whose ordering determines which query prefixes it can satisfy"? Senior A. Compound index B. _id C. BSON D. Collection
18. Which statement is correct? Senior A. Compound index — a single index built over several fields whose ordering determines which query prefixes it can satisfy B. Compound index — the binary-encoded superset of JSON that MongoDB uses on disk and over the wire, adding types like dates and 128-bit decimals C. Compound index — a sequence of stages such as match, group, and project that transforms documents step by step D. Compound index — a grouping of documents that plays the role a table does in a relational database