Question

NoSQL data replication is __________.

A:Homogenous

B:Heterogenous

Answer 1

Answer:

this is your correct answer

Answer 2

Homogenous

Explanation:

Replication is the process of synchronizing data across multiple servers. Replication provides redundancy and increases data availability with multiple copies of data on different database servers. Replication protects a database from the loss of a single server. Replication also allows you to recover from hardware failure and service interruptions. With additional copies of the data, you can dedicate one to disaster recovery, reporting, or backup.

MongoDB achieves replication by the use of replica set. A replica set is a group of mongod instances that host the same data set. In a replica, one node is primary node that receives all write operations. All other instances, such as secondaries, apply operations from the primary so that they have the same data set. Replica set can have only one primary node.

Replica set is a group of two or more nodes (generally minimum 3 nodes are required).

In a replica set, one node is primary node and remaining nodes are secondary.

All data replicates from primary to secondary node.

At the time of automatic failover or maintenance, election establishes for primary and a new primary node is elected.

After the recovery of failed node, it again join the replica set and works as a secondary node.

#SPJ2

https://brainly.in/question/15095987

https://brainly.in/question/47249302