Question-191: You have Cassandra cluster setup, across three geographies. In each datacentre there are 5 nodes. These datacenters are physically quite far from each other. So whenever write request is send, it is good enough to write in the same datacenter where the coordinator node resides. Which of the following consistency level would help for this?
- LOCAL_ONE
- Get all Questions and Answer from here
- You need to have paid subscription to access all questions
- Thanks for considering Python Certification Material
Ans: A,B
Exp: There are various consistency level defined for the Cassandra cluster, which decides how many acknowledgements are required and from where. To consider the successful write request in the question it is clearly mentioned it is good enough if one of the Node in the datacentres acknowledge the successful write from the coordinator node in the same datacentre resides. There are two consistency level that can help in defining this requirement.
You can access to full explanation to question and answer from this page.
