$1.$ You can create a custom interface as a Python package.

$2.$ A ros$2\_\_\_\_\_\_\_\_\_\_\_\_$ is a channel through which information flows.

$3.$ The following are components of ros$2$ interfaces, EXCEPT:

$4.$ You want to see all the topics available in your ros$2$ simulation at any time. What is the correct command to run?

$5.$ Which of the following commands show more information about the topic $/$chatter$?$