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Which AWS CLI command correctly creates a read replica for an existing RDS instance named mydb?

easy📝 Configuration Q12 of 15
AWS - RDS and Relational Databases
Which AWS CLI command correctly creates a read replica for an existing RDS instance named mydb?
Aaws rds create-db-instance-read-replica --db-instance-identifier mydb-replica --source-db-instance-identifier mydb
Baws rds create-db-instance --db-instance-identifier mydb-replica --source-db-instance-identifier mydb
Caws rds create-read-replica --db-instance-identifier mydb-replica --source-db-instance mydb
Daws rds replicate-db-instance --source mydb --target mydb-replica
Step-by-Step Solution
Solution:
  1. Step 1: Identify the correct AWS CLI command for read replicas

    The correct command is create-db-instance-read-replica to create a read replica.
  2. Step 2: Check the parameters

    The parameters --db-instance-identifier and --source-db-instance-identifier are required to specify the replica and source.
  3. Final Answer:

    aws rds create-db-instance-read-replica --db-instance-identifier mydb-replica --source-db-instance-identifier mydb -> Option A
  4. Quick Check:

    Correct AWS CLI syntax for read replica creation [OK]
Quick Trick: Look for 'create-db-instance-read-replica' command [OK]
Common Mistakes:
  • Using 'create-db-instance' which creates a new DB, not a replica
  • Wrong command names like 'create-read-replica'
  • Mixing source and target parameters

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