Which of the following protocols operates at the HIGHEST level of the OSI model? seenagape 10 years ago Which of the following protocols operates at the HIGHEST level of the OSI model? A. ICMP B. IPSec C. SCP D. TCP Explanation:SCP (Secure Copy) uses SSH (Secure Shell). SSH runs in the application layer (layer 7) of theOSI model. ← Previous question Next question →