Question 11: Map the below, components

1. Node
2. Data center
3. Cluster

1. It can span Physical locations
2. Where you store your data. It is the basic infrastructure component of Cassandra
3. A collection of related machines and can be physical as well as virtual

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

Correct Answer: 1

Explanation:

Node: Where you store your data. It is the basic infrastructure component of Cassandra.

Data center: A collection of related nodes. A data center can be a physical data center or virtual data center. Different workloads should use separate data centers, either physical or virtual.

Replication is set by data center. Using separate data centers prevents Cassandra transactions from being impacted by other workloads and keeps requests close to each other for lower latency.

Depending on the replication factor, data can be written to multiple data centers. Data centers must never span physical locations.

Cluster: A cluster contains one or more data centers. It can span physical locations.