JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2024) — Question 67

How many bytes of overhead are added to a packet traversing a GRE tunnel?

Answer options

• A. 20
• B. 24
• C. 12
• D. 16

Correct answer: B

Explanation

The correct answer is B, which indicates that 24 bytes of overhead are added due to the GRE header and the IP header. The other options represent incorrect values that do not account for the full overhead introduced by both headers when encapsulating the original packet.