This Quiz contains totally 25 Questions each carry 1 point for you.
1. Which of the following would be a key consideration when designing a database schema for a real-world application?
Number of records
Data type of records
Access frequency
All of the above
Correct!
Wrong!
2. In a database schema, what does a foreign key represent?
A unique identifier for each record
A link between two tables
An unused table
The primary key of the same table
Correct!
Wrong!
3. What is database normalization?
The process of organizing data to minimize redundancy
The process of duplicating data for faster access
The process of deleting unnecessary data
The process of organizing data to minimize retrieval time
Correct!
Wrong!
4. What does the "R" in CRUD operations stand for?
Read
Replace
Remove
Rename
Correct!
Wrong!
5. Which HTTP method is typically used to represent the 'Create' operation in a RESTful API?
GET
POST
PUT
DELETE
Correct!
Wrong!
6. Which of the following can improve the performance of a real-world application?
Database indexing
Optimizing query performance
Load balancing
All of the above
Correct!
Wrong!
7. In MongoDB, which feature allows restricting network exposure?
Authentication
Role-based access control
Encryption
IP Whitelisting
Correct!
Wrong!
8. Which MongoDB feature ensures that only valid data, as per predefined rules, can be stored in the database?
Schema validation
Role-based access control
Sharding
IP Whitelisting
Correct!
Wrong!
9. What is the purpose of encryption at rest in MongoDB?
It protects data from being accessed by unauthorized network users.
It verifies the identity of users accessing the database.
It protects data stored on the database server's disk.
It distributes the database load over multiple servers.
Correct!
Wrong!
10. What is the purpose of sharding in MongoDB?
To increase database security
To distribute the data across multiple servers
To validate the database schema
To increase the redundancy of data
Correct!
Wrong!
11. Which of the following can be used for backup and recovery in MongoDB?
Mongodump
MongoDB Compass
Sharding
MongoDB Stitch
Correct!
Wrong!
12. In the context of a relational database, what does the 'Update' operation in CRUD typically involve?
Adding a new record to a table
Deleting a record from a table
Changing the value of one or more fields in an existing record
Reading data from a record
Correct!
Wrong!
13. What operation is typically used to search for data in a database?
Create
Read
Update
Delete
Correct!
Wrong!
14. What is the purpose of an entity-relationship (ER) diagram in database schema design?
To document the database schema
To facilitate performance tuning
To assist with CRUD operations
To enhance database security
Correct!
Wrong!
15. What is the purpose of caching in a real-world application?
To enhance database security
To distribute the workload across multiple servers
To speed up data retrieval
To validate the database schema
Correct!
Wrong!
16. Which technique could be used to increase the performance of a real-world application by reducing the amount of data sent over the network?
Data compression
Load balancing
Database indexing
Data validation
Correct!
Wrong!
17. What is the purpose of using hashed passwords in MongoDB?
To distribute the data across multiple servers
To protect password data if the database is breached
To validate the database schema
To enhance database query performance
Correct!
Wrong!
18. Which of the following is a security risk when using MongoDB?
Not using sharding
Using hashed passwords
Leaving default configuration settings unchanged
Regularly updating MongoDB to the latest version
Correct!
Wrong!
19. What is MongoDB Atlas?
A MongoDB IDE
A MongoDB deployment and management servicel
A MongoDB security feature
A MongoDB performance tuning too
Correct!
Wrong!
20. When deploying a MongoDB application, which feature can help to ensure high availability?
Schema validation
Sharding
Replication
Data compression
Correct!
Wrong!
21. What is the main goal of data normalization in database schema design?
To distribute the data across multiple servers
To reduce data redundancy and improve data integrity
To increase query performance
To protect data from unauthorized access
Correct!
Wrong!
22. In CRUD operations, which HTTP method is commonly associated with the 'Delete' operation in a RESTful API?
GET
POST
PUT
DELETE
Correct!
Wrong!
23. Which CRUD operation is typically non-idempotent?
Create
Read
Update
Delete
Correct!
Wrong!
24. Which of the following can help reduce the load on a database in a high-traffic application?
Implementing a CDN
Using a database index
Applying data normalization
All of the above
Correct!
Wrong!
25. In MongoDB, what is a replica set?
A set of data that is duplicated for faster access
A group of MongoDB processes that maintain the same data set
A feature that enhances database security
A technique for database schema design
Correct!
Wrong!
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Real-world Application with MongoDB – Quiz
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