27/Oct/2021 | 12 minutes to read
database
Here is a List of essential Cassandra Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these Cassandra questions are explained in a simple and easiest way. These basic, advanced and latest Cassandra questions will help you to clear your next Job interview.
These interview questions are targeted for a Cassandra database developer. You must know the answers of these frequently asked Cassandra database questions to clear your next Job interview.
1. What is Cassandra?
Apache Cassandra is free, open-source and NoSQL database management system. It's a wide column store, distributed database system that handles large amount of
data with scalability, high availability and no single point of failure. It's a right choice when you want high availability and scalability without impacting the performance.
Cassandra provides best support for replicating across multiple datacenters.
2. How NoSQL is different from RDBMS?
For NoSQL DB we have listed a separate document NoSQL DB Interview Questions that's covering all basic questions of NoSQL databases like advantages, disadvantages, comparison with RDBMS , different types of NoSQL databases etc.
3. List some key features of Cassandra.
4. What are the data storage units in Cassandra?
5. What guarantees does Cassandra make?
For more visit this Cassandra Guarantees
6. What are CQL (Cassandra Query Language)?
7. What are the advantages and disadvantages of Cassandra?
8. What are the different components of Cassandra?
9. How CQL allows users to organize the data?
10. What is Memtables?
11. What is SSTables?
12. What is Replication in Cassandra?
13. What is Transient Replication?
14. What is cassandra.yaml file?
15. What is data Versioning?
16. What is Tunable Consistency?
17. Explain CAP.
1. How much will you rate yourself in Cassandra?
When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like Cassandra, So It's depend on your knowledge and work experience in Cassandra. The interviewer expects a realistic self-evaluation aligned with your qualifications.
2. What challenges did you face while working on Cassandra?
The challenges faced while working on Cassandra projects are highly dependent on one's specific work experience and the technology involved. You should explain any relevant challenges you encountered related to Cassandra during your previous projects.
3. What was your role in the last Project related to Cassandra?
This question is commonly asked in interviews to understand your specific responsibilities and the functionalities you implemented using Cassandra in your previous projects. Your answer should highlight your role, the tasks you were assigned, and the Cassandra features or techniques you utilized to accomplish those tasks.
4. How much experience do you have in Cassandra?
Here you can tell about your overall work experience on Cassandra.
5. Have you done any Cassandra Certification or Training?
Whether a candidate has completed any Cassandra certification or training is optional. While certifications and training are not essential requirements, they can be advantageous to have.
We have covered some frequently asked Cassandra Interview Questions and Answers to help you for your Interview. All these Essential Cassandra Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any Cassandra Interview if you face any difficulty to answer any question please write to us at info@qfles.com. Our IT Expert team will find the best answer and will update on the portal. In case we find any new Cassandra questions, we will update the same here.