Explanation:The expiration threshold is the indexed field value plus the specified number of seconds. 2. Point out the correct statement :
A. If you build a TTL index in the foreground, MongoDB does not remove expired documents as soon as the index finishes building
B. The TTL index does guarantee that expired data will be deleted immediately upon expiration
C. Duration of the removal operation depends on the workload of your mongod instance
D. None of the mentioned
Answer:A
Explanation:The expiration threshold is the indexed field value plus the specified number of seconds. 2. Point out the correct statement :
A. If you build a TTL index in the foreground, MongoDB does not remove expired documents as soon as the index finishes building B. The TTL index does guarantee that expired data will be deleted immediately upon expiration C. Duration of the removal operation depends on the workload of your mongod instance D. None of the mentioned
Explanation:There may be a delay between the time a document expires and the time that MongoDB removes the document from the database. 3. When the TTL thread is active, you will see _______ operations in the output of db.currentOp()