Free Online DataStax Apache-Cassandra-Developer-Associate Practice Test

Prepare Your DataStax Apache-Cassandra-Developer-Associate Exam Questions with Free online Apache-Cassandra-Developer-Associate Practice Test. Get Brilliant Apache Cassandra Developer Associate Certification Exam Results with Valid Apache Cassandra Developer Associate Exam Dumps.

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Total 118 Questions | Updated On: May 13, 2024

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Question 1

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 2

You have a single datacenter 10-node cluster with a replication factor of 3.

What can NOT happen on an UPDATE query for one single row, when the consistency level is set to ONE?

A : An incoming write will go only to the first node that owns the requested row.

B : Only one node can properly complete the write

C : The other two replicas can miss the write.

D : Coordinator returns control back to the client after one single write is confirmed.

Answer: A

Question 3

What is a NOT a valid limitation for Cassandra counters?

A : Counters cannot be used for columns part of the PRIMARY KEY of a table.

B : Counter values cannot go below zero.

C : The value of a counter cannot be set.

D : A table that contains a counter can only contain counters.

Answer: B

Question 4

What values are stored in the pop column after the following sequence?

1. CREATE TABLE countries (

2. country text,

3. state text,

4. pop int STATIC,

5. PRIMARY KEY (country, state)

6. );

8. INSERT INTO countries (country, state, pop) VALUES ('USA', 'Oregon', 4200000);

9. INSERT INTO countries (country, state, pop) VALUES ('USA', 'Idaho', -1);

10. INSERT INTO countries (country, state, pop) VALUES ('USA', 'Idaho', 1700000);

A : 4200000, -1, 1700000

B : 4200000, 1700000

C : 4200000, -1

D : 1700000, 1700000

Answer: D

Question 5

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

Page: 1 / 24

Total 118 Questions | Updated On: May 13, 2024

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