You are an IT professional responding to a help desk request. The user states that their system is no longer working and it has seemed to have lost its connection to the Internet. You decide to use the OSI Model as a reference so you can systematically analyze the system to locate the problem. You find that the network cable connection has become unplugged and you plug it back in which restores network connectivity. Which OSI Model Layers would the problem have best fit?

The Application Layer $-$ Layer $7$

The Transport Layer $-$ Layer $4$

The Physical Layer $-$ Layer $1$

The Session Layer $-$ Layer $5$