Explanation: MongoDB includes support for two storage engines: MMAPv1, the storage engine available in previous versions of MongoDB, and WiredTiger. 2. Point out the correct statement :
A. Replica set configuration is complex
B. MongoDB includes support for two storage engines
C. MongoDB includes support for more than three storage engines
D. All of the mentioned
Answer:A
Explanation: MongoDB includes support for two storage engines: MMAPv1, the storage engine available in previous versions of MongoDB, and WiredTiger. 2. Point out the correct statement :
A. Replica set configuration is complex B. MongoDB includes support for two storage engines C. MongoDB includes support for more than three storage engines D. All of the mentioned
Explanation:MMAPv1 provides collection-level locking. 3. All collections have a unique ________ lock that allows multiple clients to modify documents in different collections at the same time.