Refer to the IS-IS topology diagram. You are tasked with troubleshooting IS-IS configurations errors.
Drag the router on the left to match the most optimal IS-IS router type it should use on the right.

R1 R4 R5 R2 R3

L1 R1 L1 R4 L2 R5 L1/L2 R2 L1/L2 R3