A network support tech is checking the inventory of network devices for a mid$-$sized company.$$

While inspecting a part of the network used by company executives, she discovers an undocumented device called a hub.$$After some investigation, she finds that it was authorized and installed about $25$ years ago, but it was accidentally left off the inventory.$$ The hub still works and always worked.$$ Nobody ever reported any problems.

Which of the following statements would be the best recommendation the technician could make?

The network cabling is at least as old as the hub and probably older.$$ The cabling should be replaced as a preventative measure.

The hub works, but it is over twenty years old.$$ Another hub should be installed to run parallel with the old one.$$ That way it can automatically take over if the old one fails.

$"$If it ain't broke, don't fix it$."$The hub is functional so it should be ignored.

Although it "just works,"$$hubs are inefficient and they are serious security risks.$$ They make monitoring$$and capturing network traffic very easy.

It should be replaced with a switch.