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 show ip interface command. Not all categories are used.
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.
