Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 52

The enterprise network WAN link has been receiving several denial of service attacks from both IPv4 and IPv6 sources. Which three elements can you use to identify an IPv6 packet via its header, in order to filter future attacks? (Choose three.)

Answer options

• A. Traffic Class
• B. Source address
• C. Flow Label
• D. Hop Limit
• E. Destination Address
• F. Fragment Offset

Correct answer: B, C, E

Explanation

The correct answers are B, C, and E because the Source address identifies where the packet is coming from, the Flow Label helps distinguish packets belonging to the same flow, and the Destination Address indicates where the packet is headed. Options A, D, and F do not provide unique identifiers for filtering purposes in this context.