Explanation:The database profiler writes data in the system.profile collection, which is a capped collection. 4. The ___________ provides information for various lock types and lock modes held during the operation.
A. admin.system.authlocks
B. system.profile.locks
C. admin.system.locks
D. All of the mentioned
Answer:A
Explanation:The database profiler writes data in the system.profile collection, which is a capped collection. 4. The ___________ provides information for various lock types and lock modes held during the operation.
A. admin.system.authlocks B. system.profile.locks C. admin.system.locks D. All of the mentioned
Explanation:MongoDB uses reader-writer locks that allow concurrent readers shared access to a resource, such as a database or collection, but give exclusive access to a single write operation. 5. Point out the wrong statement :