Free Cassandra Professional Development Questions and Answers

Question 1

What is Cassandra a mix of?

Accepted Answer

Bigtable + dynamo

Answer

Explanation:
Cassandra is a distributed, highly available, and fault-tolerant NoSQL database system that combines the data model of Google's Bigtable with the distributed systems design of Amazon's Dynamo.

Question 2

TTL, what do you mean by this?

Accepted Answer

Time to live

Answer

Explanation:
In computer networking, TTL stands for "Time to Live." It is a field in the header of an IP (Internet Protocol) packet that indicates the maximum number of routers that the packet can pass through before it is discarded.

Question 3

Which Cassandra feature enables simultaneous execution of many queries?

Accepted Answer

BATCH

Answer

Explanation:
In Cassandra, the BATCH feature allows you to execute multiple queries at once as a single atomic operation.

Question 4

What Cassandra version do you use?

Accepted Answer

3.9

Answer

The version in use is Cassandra 3.9, a specific release in the 3.x line. The other options (2.4, 3.2, and 3) are different or incomplete version numbers and don't match the deployed release.

Question 5

Only columns with a __ that are not the primary key can use the where clause.

Accepted Answer

Secondary Index

Answer

Explanation:
In Cassandra, the WHERE clause can be used to filter the data based on certain conditions. When querying data, the WHERE clause can be applied to any column in the table, whether it is a primary key or a non-key column. However, when querying a table based on a non-key column, an index is required to be created on that column.

CASSANDRA - Apache Cassandra Database Practice Test

CASSANDRA - Apache Cassandra Database Practice Test

Free Cassandra Professional Development Questions and Answers