Explanation:MongoDB can run over multiple servers, balancing the load and/or duplicating data to keep the system up and running in case of hardware failure. 3. ___________ replicas maintain a copy of the data on the primary using built-in replication.
A. Primary
B. Secondary
C. Backup
D. All of the mentioned
Answer:A
Explanation:MongoDB can run over multiple servers, balancing the load and/or duplicating data to keep the system up and running in case of hardware failure. 3. ___________ replicas maintain a copy of the data on the primary using built-in replication.
A. Primary B. Secondary C. Backup D. All of the mentioned
Explanation:When a primary replica fails, the replica set automatically conducts an election process to determine which secondary should become the primary. 4. MongoDB scales horizontally using _________ for load balancing purpose.