Denis is responsible for ensuring that his organization has reliable, supported network hardware. Which of the following is not a common concern for network administrators as they work to ensure their network continues to be operational?

Most networks include many edge devices like wireless access points and edge switches. These devices often have a single power supply to balance cost against reliability and will simply be replaced if they fail. More critical devices like routers and core switches are typically equipped with redundant power supplies to ensure that larger segments of the network do not fail if a component fails. Of course, making sure devices are supported so they get updates and that they are under warranty are both common practices for supportable networks.