Which of the following best illustrates the Network Layer of the Open Systems Interconnection $($OSI$)$ Reference Model?

The network interface card on Chantelle's computer has failed. When she replaces it with a new one, her computer will acquire a new Media Access Control $($MAC$)$ address.

Aditya has decided to run hils gaming computer on a wired connection, so he turns off the Wi$-$Fi connection on that computer and plugs in an Ethernet cable.

A copper wire segment of the telephone system in Maria's apartment has failed, requiring a technician from the phone company to come and replace it:

Gerald is setting up a small home$/$office network for a friend. The network is both wired and wireless and he is configuring IPv$4$ addressing for each device.