DoS attacks could target computing capacity by exhausting processes and CPU time. In Linux, we can use the command "ulimit" to stop this kind of DoS attacks. Show and discuss the two options of "ulimit" that are needed to stop the attack by limiting processes and CPU time?

Cuz maybe it is inappropriate

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.