Question

You cannot use _________ to change the value of expireAfterSeconds of an existing index.

(a) createIndex()

(b) dropIndex()

(c) removeIndex()

(d) none of the mentioned

The question was asked in semester exam.

I would like to ask this question from Data from Collections in division Monitoring MongoDB and Optimization Strategies for MongoDB of MongoDB

Answer 1

The correct option is (a) createIndex()

For explanation: Instead use the collMod database command in conjunction with the index collection flag. Otherwise, to change the value of the option of an existing index, you must drop the index first and recreate.