Correct Answer : void close()
Explanation : void close() : It is used to close the cluster instance.
Correct Answer : cqlshrc
Explanation : cqlsh is used with SSL encryption.
Correct Answer : Partitioner
Correct Answer : system_auth.credentials
Explanation : Password Authenticator is an IAuthenticator implementation that you can use to configure Cassandra for internal authentication out-of-the-box.