Correct Answer : 7000
Explanation : By default, Cassandra uses 7000 for cluster communication (7001 if SSL is enabled), 9042 for native protocol clients, and 7199 for JMX.
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.