Explanation:Queries to sharded collections should include the collection’s shard key. 3. When inserts, updates and deletes have a _________ write concern, write operations return quickly.
A. strong
B. weak
C. average
D. very strong
Answer:A
Explanation:Queries to sharded collections should include the collection’s shard key. 3. When inserts, updates and deletes have a _________ write concern, write operations return quickly.
A. strong B. weak C. average D. very strong
Explanation:With stronger write concerns, clients wait after sending a write operation for MongoDB to confirm the write operations. 4. The mongo shell and the MongoDB drivers use __________ as the default write concern.