Question

if internet connection is lost because an ethernet cable is disconnected, this causes an error at what layer?

Answer 1

If an Ethernet cable is disconnected and causes a loss of internet connection, this would cause an error at the Data Link Layer (Layer 2) of the OSI Model. This is because the Data Link Layer is responsible for providing reliable data transfer across a physical link, such as an Ethernet cable. When the cable is disconnected, the Data Link Layer is unable to establish and maintain a reliable link, causing an error.