Free Cassandra Skills Questions and Answers

Question 1

Which tool is employed to view a table's statistics?

Accepted Answer

Nodetool

Answer

Explanation:
In Cassandra, nodetool is a command-line utility tool used to manage and monitor the Cassandra cluster. Nodetool can be used to view the statistics of a table, as well as other important information about the cluster and its nodes.

Question 2

Which of the following data types maintains the order of the supplied elements?

Accepted Answer

List

Answer

Explanation:
In the List data type, the order of the elements entered is maintained. Lists are a collection of ordered elements, where each element is identified by an index or position within the list. Elements can be added, removed, or accessed by their index, and new elements can be added to the end of the list.

Question 3

Which of the following data types is utilized to produce our own data kinds?

Accepted Answer

User-defined data types

Answer

Explanation:
As the name suggests, User-defined data types are used to create data types of our own. In Cassandra, user-defined data types are used to group multiple columns into a single data type, allowing you to define custom structures for your data.

Question 4

How can there be a Cassandra error if there are no syntax errors?

Accepted Answer

All of the above

Answer

Even syntactically valid CQL can fail because of version mismatches, system-level problems (resources, configuration), or cluster issues (node failures, network partitions, consistency-level failures). Since errors can arise from all of these categories, no single option is sufficient — 'All of the above' is correct.

Question 5

What is the one thing that a cluster DOES NOT need?

Accepted Answer

Java

Answer

Cassandra runs on the JVM, but it's the JDK/JVM runtime that's the real dependency — plain 'Java' as a programming language isn't something the cluster itself needs. Nodes do require a JDK, network connectivity (LAN), and a supported OS like Linux, so those are genuine requirements.

CASSANDRA - Apache Cassandra Database Practice Test

CASSANDRA - Apache Cassandra Database Practice Test

Free Cassandra Skills Questions and Answers