Explanation:As a result, documents may remain in a collection during the period between the expiration of the document and the running of the background task. 5. Point out the wrong statement :
A. The unique constraint applies to separate documents in the collection
B. Unique index prevents separate documents from having the same value for the indexed key
C. Index does prevent a document from having multiple elements or embedded documents in an indexed array from having the same value
D. None of the mentioned
Answer:A
Explanation:As a result, documents may remain in a collection during the period between the expiration of the document and the running of the background task. 5. Point out the wrong statement :
A. The unique constraint applies to separate documents in the collection B. Unique index prevents separate documents from having the same value for the indexed key C. Index does prevent a document from having multiple elements or embedded documents in an indexed array from having the same value D. None of the mentioned
Explanation:In the case of a single document with repeating values, the repeated value is inserted into the index only once. 6. On replica sets, the TTL background thread only deletes documents on :