Troubleshooting and Maintaining Cisco IP Networks (TSHOOT, legacy) — Question 20

What are two primary components of a GRE tunnel? (Choose two.)

Answer options

• A. LLC header
• B. Ethernet header
• C. GRE header
• D. IP header
• E. payload packet

Correct answer: C, E

Explanation

The GRE header (C) is essential as it encapsulates the protocol information of the GRE tunnel, while the payload packet (E) represents the actual data being transmitted through the tunnel. The LLC header (A), Ethernet header (B), and IP header (D) are not primary components of a GRE tunnel as they relate to other networking layers and protocols.