Cache _______ takes place when DNS query responses contain malicious items received from nonauthoritative servers

A newly hired administrator is tasked to change the number of CPUs assigned to a VM. Which of the following if the FIRST step the administrator should do during a scheduled maintenance window?

A. Create a snapshot. B. Back up the host. C. Shut down the guest. D. Shut down the host.

Which of the following is not a common network topology?

A. Star B. Cluster C. Linear bus D. Ring