Correct Answer: Db.person.find({homePhone: {$exists: true}});
Explanation:
Note: This Question is unanswered, help us to find answer for this one
MongoDB Skill Assessment
Your Skill Level: Poor
Retake Quizzes to improve it
More MongoDB MCQ Questions
Which file in the MongoDB directly holds the MongoDB daemon?
You have just secured your previously unsecured MongoDB server, but the server is still not requiring authentication. What is the best option?
What is the most accurate statement regarding MongoDB and ad hoc queries?
In MongoDB, what does a projection do?
To remove a database and all of its records from MongoDB, what operator should you use?
Which of the following statements are true about MongoDB
Which method should be used to create an index on a collection, if it does not already exist?
The map-reduce operation uses a temporary collection for data processing; The benefit of this behavior is that the operations:
To create an index for user_name field on user collection, which of the following is the correct syntax?
Which platform does MongoDB support?