Mongodb Certified Developer Associate C100dev Exam Questions & Answers

All 42 questions

1. Q1 Suppose you have a companies collection in your database. Only the following documents are stored in this collection:{ _id: ObjectId("52cdef7c4bab8bd675297da4"), name: 'Powerset',…
2. Q2 Consider the following MongoDB collection students:{ "_id": 1, "name": "John Doe", "age": 25, "class": "A"},{ "_id": 2, "name": "Jane Doe", "age": 22,…
3. Q3 A collection called players contains the following documents:[ { _id: 1, user: 'Tom', scores: [ 23, 56, 3, 52, 62 ], bonus:…
4. Q4 Consider a collection named employees with the following document:{ "_id" : ObjectId("5f0a7e80d8c9c7b5a48c49e1"), "name" : "John Doe", "position" : "Developer", "department" : "IT",…
5. Q5 Which cursor method should you use to return the number of documents in the result set?
6. Q6 You are responsible for a MongoDB database managing customer orders. Each document in the orders collection contains fields like _id, orderId, status,…
7. Q7 Which command do you use to display all indexes in routes collection?
8. Q8 You are designing a MongoDB database for a university system. You have the following collections:Students: Stores information about each student, including their…
9. Q9 We have a movies collection with the following document structure:{    _id: ObjectId("573a1390f29313caabcd60e4"),    title: 'The Immigrant',    released: ISODate("1917-06-17T00:00:00.000Z"),    rated: 'UNRATED',    year: 1917,    imdb: { rating: 7.8, votes: 4680, id: 8133 }}We need to filter those movies where the imdb rating is greater then…
10. Q10 Which of the following is used by MongoDB to ensure high scalability?
11. Q11 In the PyMongo driver for MongoDB, which of the following is the correct syntax for updating multiple documents in a collection that…
12. Q12 The following capped collection is given: db.createCollection('latest_news', {'capped': true, 'size': 10000, 'max': 3})[  {    _id: ObjectId("61e8007c9b3067e362440a88"),    title: 'COVID records broken again as weekend brings nearly 40K new cases'  },  {    _id: ObjectId("61e800989b3067e362440a89"),    title: 'Bitcoin, Ethereum, Dogecoin Face Fresh Round Of Regulatory Scrutiny'  },  {    _id: ObjectId("61e800d19b3067e362440a8a"),    title: 'Where Six Meme Stock Investors Are Now'  }]What the latest_news collection will look like after the following…
13. Q13 You are working on an e-commerce application that needs to summarize daily sales data and store it in a daily_sales_summary collection. You…
14. Q14 Given the following example document from an artists collection:{  _id: 5,  last_name: 'Maurer',  first_name: 'Alfred',  year_born: 1868,  year_died: 1932,  nationality: 'USA'}And the following index:db.artists.createIndex( { "last_name": 1, "nationality": 1 } )How MongoDB will handle…
15. Q15 You are a MongoDB Associate Developer and need to demonstrate how to load the Atlas Sample Dataset into your MongoDB Atlas cluster.…
16. Q16 What is the difference between a sparse index and a non-sparse index in MongoDB?
17. Q17 You are working with a profiles collection that stores documents in the following structure:{ "_id": ObjectId("..."), "username": "tech_guru", "loginCount": 4, "settings": {…
18. Q18 Which of the following MongoDB query operators is used to match a value in an array?
19. Q19 You're developing a service in Node.js using the MongoDB Node.js driver. You have to handle a scenario where multiple clients need to…
20. Q20 When it comes to optimizing performance in MongoDB, indexes play a crucial role. Which of the following statements about MongoDB indexing is…
21. Q21 In a MongoDB collection named products, each document contains information about a product, including product_id, name, price, and stock_quantity. The price of…
22. Q22 Given a movies collection where each document has the following structure:{ _id: ObjectId("573a1390f29313caabcd60e4"), genres: [ 'Short', 'Comedy', 'Drama' ], title: 'The Immigrant',…
23. Q23 Consider a scenario where you are developing a web application using Node.js and MongoDB as the backend database. The application requires real-time…
24. Q24 Suppose you have a developers collection with only two documents:{  _id: 1,  lname: 'Smith',  tech_stack: [ 'sql', 'git', 'python', 'django' ],  fname: 'Bob'},{  _id: 2,  fname: 'Michael',  lname: 'Doe',  tech_stack: [ 'git', 'python', 'sqlite', 'linux', 'flask' ]}Using Aggregation Framework you run the following stage:{ $unwind: { path: '$tech_stack' }}How many…
25. Q25 Can you perform the following operation in MongoDB?db.users.insertOne({})
26. Q26 You are working with a MongoDB collection named sales, where each document records a sales transaction. The documents contain fields such as…
27. Q27 When modeling a relationship between two entities in MongoDB, what is the purpose of using an embedded relationship?
28. Q28 A development team is configuring an application to connect to a MongoDB cluster hosted on Atlas. The application must connect securely, utilize…
29. Q29 In MongoDB, which statement accurately describes a typical task for a MongoDB developer related to schema validation?
30. Q30 Suppose we have a shipwrecks collection with the following document structure:{  _id: ObjectId("578f6fa2df35c7fbdbaed8ce"),  feature_type: 'Wrecks - Visible',  watlev: 'always dry',  coordinates: [ -79.9469681, 9.3729954 ]}Your application will often query based on the coordinates field. How to…
31. Q31 You are working on a MongoDB collection called orders that stores customer orders. Each document has the following structure:{ "_id": ObjectId("..."), "customerName":…
32. Q32 You are working with a products collection. Each document has the following structure:{ "_id": ObjectId("..."), "name": "Laptop", "price": 999.99, "tags": ["electronics", "portable",…
33. Q33 You have a MongoDB collection named employees that contains documents with fields name, department, and salary. You want to update the salary…
34. Q34 Your application uses MongoDB as its primary database and handles financial transactions. Due to the critical nature of these transactions, you decide…
35. Q35 You are managing a MongoDB collection named orders, where each document represents an order. The documents contain the following fields:order_id (String): The…
36. Q36 You're developing a microservice that needs to retrieve data from a MongoDB database. The data consists of a series of nested documents…
37. Q37 What is the behavior of MongoDB when sorting on a field that has both numeric and non-numeric values in the same collection?
38. Q38 You have a MongoDB collection named orders that stores customer order details. Each document in the collection has a structure like this:{…
39. Q39 In your database a movies collection is given where each document has the following structure:{ _id: ObjectId("573a1391f29313caabcd9264"), genres: [ 'Romance', 'Drama' ],…
40. Q40 What is a document in MongoDB?
41. Q41 You are managing a MongoDB database for a fitness tracking application. The application tracks user activity through a Users collection. Each user…
42. Q42 You are designing an aggregation pipeline to retrieve documents from the orders collection. Your goal is to calculate the total sales amount…