What two commands are needed at a minimum to apply an ACL that will ensure that only devices that are used by the network administrators will be allowed Telnet access to the routers?

The answers to this are E and G. These things are important to do especially if there are some files that are considered to be confidential that will be sent through the devices. Even if it would be hard to get information from other devices, the moment that they can access the same network, it will be easier for them. This is something that they need to prevent so that all of the private information will stay within the network and will remain private.

There are even some devices that are disconnected from the network when the users have not affiliated anymore with the company. This is again done in order to ensure the privacy of the data that are being shared.