Which of the following statement holds true in terms of containers?

Justine has been tasked by her supervisor to ensure that the company's physical security is on the same level as their logical security measures. She installs video cameras at all entrances and exits and installs badge access points for all doors. The last item she wants to install is a method to prevent unauthorized people piggybacking employees. What should she install to prevent piggybacking?

John has successfully remediated the vulnerability of an internal application that could have caused a threat to the network. He is scanning the application for the existence of a remediated vulnerability, this process is called a________and it has to adhere to the_________

George was conducting a recovery drill test as a part of his network operation. Recovery drill tests are conducted on the______________.

If there is a fire incident caused by an electrical appliance short-circuit, which fire suppressant should be used to control it?