$13.$ A web$-$based application can't be developed only with the web browser because it's $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$ a$.$ True b$.$ False $14.$ The label $\_\_\_\_\_\_\_\_\_\_$ indicates that, at any given time, the web server does not know the status of any of the clients communicating with it$.$ a$.$ True b$.$ False