This is 35 question set of Apache Cassandra Brass Tacks Question & Answer. Please NOTE that all questions and answers are based on our research and self-study.
Q. 1. Continuous uptime and low latency are achieved in NoSQL systems as compared to traditional relational databases.
Ans: Yes
Q. 2. Which of the following statements about NoSQL databases is true?
Ans: Support unstructured data
Q. 3. What is meant by ‘Active everywhere design’?
Ans: All nodes can be written to and read from
Q. 4. Which among the following is a NoSQL Database?
Ans: All of the options mentioned
Q. 5. Cassandra is not suitable for IoT applications.
Ans: False
Q. 6. Cassandra is a __ architecture.
Ans: peer-to-peer
Q. 7. Which type of data model does Cassandra use?
Ans: Both key-value and tabular data models
Q. 8. Which command can be used to list all available commands/operations in Cassandra?
Ans: HELP
Q. 9. What are ‘seed nodes’ in Apache Cassandra?
Ans: All of the options mentioned
Q.10. A bloom filter can return __.
Ans: A false positive
Q. 11. Which Linux flavor can be used for Cassandra Installation?
Ans: All of the options mentioned
Q. 12. The cluster can have multiple seed nodes.
Ans: True
Q. 13. SSTable resides in memory.
Ans: False
Q.14. Java instance should be running in the machine in order to set up Cassandra.
Ans: Yes, java must be running on the machine
Q. 15. What is C-A-P, in the CAP theorem?
Ans: 1) Consistency 2) Availability and 3) Partition tolerance
Q. 16. What is the default partitioner in the Apache Cassandra cluster?
Ans: Murmur3Partitioner
Q. 17. Pick the correct statements.
Ans: All of the options mentioned
Q. 18. Cassandra attaches a timestamp to each version of the record and uses this to merge records.
Ans: Yes
Q. 19. The simplest and the fastest read path is when the record is present in the __.
Ans: Row Cache
Q. 20. Authorization capabilities for Cassandra use the familiar__________ security paradigm to manage object permissions.
Ans: GRANT
Q. 21. Row cache is an in-memory cache, which stores recently read rows.
Ans: True
Q. 22. To be able to read data from compressed blocks, Cassandra consults __.
Ans: Compression offsets
Q. 23. Keyspace is analogous to __ in the relational world.
Ans: database
Q. 24. Which among the following is not a Replica Placement strategy?
Ans: None of the options mentioned
Q. 25. Is Timestamp an optional field in Column?
Ans: True
Q. 26. Pick the correct statement.
Ans: All the options mentioned
Each keyspace has at least one and often many column families.
Q. 27. Which among the following is the right syntax for ‘Using a Keyspace’?
Ans: USE
Q. 28. Which of the following statements is true about CQL?
Ans: All of the options mentioned
Q. 29. Defining a primary key is mandatory while creating a table.
Ans: True
Q. 30. Which Linux flavor can be used for Apache Cassandra Installation?
Ans: All of the options mentioned
Q. 31. Is apache cassandra nosql?
Ans: Yes, Cassandra is a NoSQL database, which means it does not use the old table structure found in SQL databases
Q. 32. Can Apache spark a run on Windows 10?
Ans: Yes, apache-spark requires Windows version 10 or later.
Q. 33. What is the primary language for communicating with the Apache Cassandra™ database?
Ans: CQL
Q. 34. Cassandra will keep appending the records into the Commit Log and then to the memtable.
Ans: Ture
Q. 35. Which directory contains Cassandra configuration files?
Ans: conf