Exam C100DEV Topic 1 Question 44 Discussion

Actual exam question for MongoDB's C100DEV exam
Question #: 44
Topic #: 1

Select all true statements regarding to the _id field in MongoDB documents. (select 4)

A. When inserting a document, the _id value is already generated as an ObjectId type, if not directly specified. B. MongoDB adds an _id field to any inserted document if it doesn't have one. C. We can select a non ObjectId type value for _id field when inserting a new document. D. The _id values must be unique for the collection. E. The _id can be an array data type.

Suggested Answer: A,B,C,D Vote an answer

https://docs.mongodb.com/manual/core/document/ https://docs.mongodb.com/manual/reference/method/ObjectId/

by Leonard at Nov 21, 2024, 09:44 AM

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