Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 47

Which two GRE features are configured to prevent fragmentation? (Choose two.)

Answer options

• A. TCP window size
• B. IP MTU
• C. TCP MSS
• D. DF bit clear
• E. MTU ignore

Correct answer: B, C

Explanation

The correct answers are B (IP MTU) and C (TCP MSS) because both settings directly influence the maximum packet size that can be transmitted without fragmentation. Options A (TCP window size) and D (DF bit clear) do not control fragmentation, and E (MTU ignore) would actually allow for fragmentation to occur.