Mongoose quiz

Test your Mongoose knowledge with a free interactive quiz — 24 questions with answers and explanations. No signup needed to play.

What is the purpose of a compound/multi-field index in Mongoose (`schema.index({ ... })`)?

1. What is the purpose of a compound/multi-field index in Mongoose (`schema.index({ ... })`)?
2. How do you delete a document?
3. How do you connect Mongoose to a MongoDB database?
4. How do you find documents matching a condition?
5. What is a Mongoose "virtual"?
6. How do you create and save a new document?
7. What does `mongoose.Schema.Types.ObjectId` (referenced via `ref`) represent?
8. How do you define a default value for a schema field?
9. What is a Mongoose "schema"?
10. How do you update a document?
11. What does specifying `timestamps: true` in schema options do?
12. What does `findOne()` return versus `find()`?

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