Free DataStax Apache-Cassandra-Developer-Associate Exam Questions

Become DataStax Certified with updated Apache-Cassandra-Developer-Associate exam questions and correct answers

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Total 118 Questions | Updated On: May 22, 2026

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Question 1

Primary keys:

A : identify the nodes in the cluster that store the row(s).

B : uniquely identify rows in a table and determine their sort order.

C : uniquely identify rows in a partition and determine their sort order.

D : are alternative surrogate keys for row numbers.

Answer: B

Question 2

Which is NOT true for a read repair?

A : Read repair is a process of repairing data replicas during a read request.

B : Read repair runs in the foreground as a blocking operation.

C : Read repair ensures that data in your cluster stays in sync.

D : Read repair always occurs when consistency level is ANY.

Answer: D

Question 3

What is an example of hybrid-cloud deployment?

A : Cassandra in on-premise data center accessed from AWS virtual machines.

B : Cassandra deployed on both on-premise and on Azure virtual machines.

C : Cassandra in two inter-connected on-premise data centers.

D : Cassandra in two separate on-premise data centers.

Answer: B

Question 4

Define the primary key for accounts_by_user:

A : PRIMARY KEY (username, account_number ASC)

B : PRIMARY KEY ((username), account_number)

C : PRIMARY KEY (username, (account_number))

D : PRIMARY KEY ((username, account_number))

Answer: B

Question 5

When to use a secondary index?

A : When querying a table using a column that cannot normally be queried.

B : On tables with a counter column.

C : On a frequently updated or deleted column.

D : On high-cardinality columns.

Answer: A

Page: 1 / 24

Total 118 Questions | Updated On: May 22, 2026

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