Is it required to set the TimeToLive and Redelivery Policies for ActiveMQ Topics?

I'm implementing AMQ topics for my Inbound and Outbound configurations and I would like to know more about the parameters like TimToLive and Redelivery Policies of topic.

Is this really required to set these paramters separatly to the topic?

1) If yes, then what is the use of durable-subscribers?

2) If no, then what are the default parameter values for Topic and when the message will expires in Topic?

I'm using apache-activemq-5.15.8 for our implementations.