Explanation:To access the config database, connect to a mongos instance in a sharded cluster, and use the following helper: use config. 5. Point out the wrong statement :
A. Database servers store the metadata for a sharded cluster
B. Always back up the config database before doing any maintenance on the config server
C. The mongos instances cache metadata and use it to route read and write operations to shards
D. None of the mentioned
Answer:A
Explanation:To access the config database, connect to a mongos instance in a sharded cluster, and use the following helper: use config. 5. Point out the wrong statement :
A. Database servers store the metadata for a sharded cluster B. Always back up the config database before doing any maintenance on the config server C. The mongos instances cache metadata and use it to route read and write operations to shards D. None of the mentioned
Explanation: The metadata reflects state and organization of the sharded data sets and system. 6. ________ is a string that holds the address of the client, a mongos instance that initiates this change.