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: Feb 09, 2026

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Question 1

Consider the following keyspace definition:

1. CREATE KEYSPACE mykeyspace

2. WITH replication = {'class': 'NetworkTopologyStrategy', 'DC1': 3, 'DC2': 3};

DC1 has 4 nodes active and 2 down, DC2 has 3 nodes active and one down.

Which of the next statements is true?

A : A request with LOCAL_QUORUM on a healthy DC2 node will be handled by DC1.

B : A request with LOCAL_QUORUM on a healthy DC2 node will succeed.

C : A request with QUORUM on a healthy DC2 node will fail.

D : A request with LOCAL_QUORUM on a healthy DC1 node will fail.

Answer: B

Question 2

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 3

How to define the primary key of a Country table, if we want individual records by country and state, and filtered lists of cities by a population range?

A : PRIMARY KEY (country, state, city, population)

B : PRIMARY KEY ((country, state), city, population)

C : PRIMARY KEY ((country, state), population, city)

D : PRIMARY KEY (country, state, population, city)

Answer: C

Question 4

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

Question 5

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

Page: 1 / 24

Total 118 Questions | Updated On: Feb 09, 2026

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