DRAG DROP
Drag each category on the left to its corresponding router output line on the right. Each router output line is the result of a shown ip interface command.
Answer: 
Explanation:
A simple way to find out which layer is having problem is to remember this rule: “the first
statement is for Layer 1, the last statement is for Layer 2 and if Layer 1 is down then surely
Layer 2 will be down too”, so you have to check Layer 1 before checking Layer 2. For
example, from the output “Serial0/1 is up, line protocol is down” we know that it is a layer 2
problem because the first statement (Serial0/1 is up) is good while the last statement (line
protocol is down) is bad. For the statement “Serial0/1 is down, line protocol is down”, both
layers are down so the problem belongs to Layer 1.
There is only one special case with the statement “…. is administrator down, line protocol is
down”. In this case, we know that the port is currently disabled and shut down by the
administrators.