Explanation:Most MongoDB driver clients will include the _id field and generate an ObjectId before sending the insert operation to MongoDB. 10. MongoDB uses the ________ notation to access the elements of an array and to access the fields of an embedded document.
A. Dot
B. Array
C. Nested Sets
D. None of the mentioned
Answer:A
Explanation:Most MongoDB driver clients will include the _id field and generate an ObjectId before sending the insert operation to MongoDB. 10. MongoDB uses the ________ notation to access the elements of an array and to access the fields of an embedded document.
A. Dot B. Array C. Nested Sets D. None of the mentioned
Explanation:To access an element of an array by the zero-based index position, concatenate the array name with the dot (.) and zero-based index position, and enclose in quotes. Sanfoundry Global Education & Learning Series – MongoDB.