Free MongoDB C100DEV Exam Questions

Become MongoDB Certified with updated C100DEV exam questions and correct answers

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Total 411 Questions | Updated On: Jun 15, 2022
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Question 1

In the context of MongoDB development, you are creating a new service that is expected to handle high load. You've decided to leverage the MongoDB drivers' connection pooling capability. What best describes connection pooling and its advantages?


Answer: C
Question 2

What is the correct syntax to insert multiple documents into a MongoDB collection named orders and return the _id values for all inserted documents?


Answer: B
Question 3

Which of the following constraints might impact your data model for MongoDB? (Select three)


Answer: B,C,E
Question 4

Suppose you insert the following documents into a companies collection:
db.companies.insertMany([
    {"name": "Facebook"}, 
    {"name": "X"}
])
Select all true statements about this command. (Select three)


Answer: C,D,E
Question 5

You are working on a MongoDB database for a library system. The system tracks book information in a Books collection. A typical document in this collection looks like this:
Original Document:
{
  "_id": ObjectId("book_id"),
  "title": "The Art of Computer Programming",
  "author": "Donald Knuth",
  "genres": ["Computer Science", "Algorithms"],
  "published_year": 1968,
  "copies_available": 3
}
You are asked to update the document by replacing it with the following document:
Updated Document:
{
  "title": "The Art of Computer Programming",
  "published_year": 1973
}
After this update, what will the final document in the database look like?


Answer: A
Page:    1 / 83      
Total 411 Questions | Updated On: Jun 15, 2022
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