DataStax Cassandra Developer Certification Certification Questions and Answer (Dumps and Practice Questions)

Question : In Application Workflow Model, how do you define access patterns?

1. Using access pattern, you determine how data is accessed and you will know, what queries you will be
running.

2. Using access pattern, you determine how data will be arranged in table, so that we can have least
normalization.

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4. 1 and 3

5. 2 and 3


Correct Answer : Get Lastest Questions and Answer :
Explanation: access patterns determine how data is accessed a" know what queries you will run




Question : What all are true, with regards to logical model

1. To design logical model use top down approach

2. You can define logical model algorithmically

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4. 1 and 3

5. 1,2 and 3

Correct Answer : Get Lastest Questions and Answer :
Explanation: Process to design logical model
use top down approach
can be algorithmically defined
effective in a long run





Question : Conceptual data model is specific to NoSQL databases?

1. True
2. False

Correct Answer : Get Lastest Questions and Answer :
Explanation: you can build conceptual data model using entity relationship diagram. But it is not specific to any
type of database.
You can use for RDBMS, NoSQL or Flat file etc.

Related Questions

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Question : . If you have a multi-data center cluster setup, than include at least one node from each datacenter (replication
group) in the seed list.

1. True
2. False


Question : Please map the following

A. Dynamic snitching
B. RackInferringSnitch
C. GossipingPropertyFileSnitch

1. Monitors the performance of reads from the various replicas and chooses the best replica based on this history.
2. Determines the location of nodes by rack and datacenter corresponding to the IP addresses.
3. Automatically updates all nodes using gossip when adding new nodes and is recommended for production.


1. A-3, B-1, C-3
2. A-3, B-2, C-1
3. A-1, B-2, C-3
4. A-1, B-3, C-2


Question : When you set replication factor as , it means total copy of same data will be created

1. True
2. False


Question : You have been given below ER Diagram

What is the correct table design to satisfy below query?

Query: Find all author that matches specific category and also show the most recently published first

1. A
2. B
3. C
4. D


Question : Which one would you prefer , when data duplication is done because of schema design ?


1. Constant duplication

2. Exponential duplication

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4. 1 and 2

4. 1 and 3



Question : You have been given below ER Diagram

What is the correct table design to satisfy below query?

Query: Find all books that is subscribed by a subscriber and support writing year range, with most writing year first then
sorted by title.


1. A
2. B
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4. D