Who is mainly responsible for providing proper network services and handling network-related incidents in all the cloud service models?

Bonney's system has been compromised by a gruesome malware.
What is the primary step that is advisable to Bonney in order to contain the malware incident from spreading?

The sign(s) of the presence of malicious code on a host infected by a virus which is delivered via e-mail could be:

identify the network security incident where intended or authorized users are prevented from using system, network, or applications by flooding the network with a high volume of traffic that consumes all existing network resources.

What command does a Digital Forensic Examiner use to display the list of all open ports and the associated IP addresses on a victim computer to identify the established connections on it: