Explanation:To modify the index, you must drop the index first. 2. Point out the wrong statement :
A. To modify an existing index, you need to drop and recreate the index
B. Your client library may have a different or additional interface for this operation
C. To see the status of an indexing process, you can use the db.statusOp() method in the mongo shell
D. None of the mentioned
Answer:A
Explanation:To modify the index, you must drop the index first. 2. Point out the wrong statement :
A. To modify an existing index, you need to drop and recreate the index B. Your client library may have a different or additional interface for this operation C. To see the status of an indexing process, you can use the db.statusOp() method in the mongo shell D. None of the mentioned
Explanation:To see the status of an indexing process, you can use the db.currentOp() method in the mongo shell. 3. If you need to rebuild indexes for a collection you can use the _________ method to rebuild all indexes on a collection in a single operation.