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300-410 · Question #93
300-410 Question #93: Real Exam Question with Answer & Explanation
The correct answer is D: Asymmetric routing. When a ping packet takes a different return path than its outbound path, it's a characteristic behavior of asymmetric routing.
Layer 3 Technologies
Question
You just discovered that a ping packet sent from one of the devices to another took a different path in the return than it did on its way to the destination. What behavior caused this?
Options
- AWindowing
- BGlobal synchronization
- CMSS
- DAsymmetric routing
Explanation
When a ping packet takes a different return path than its outbound path, it's a characteristic behavior of asymmetric routing.
Common mistakes.
- A. Windowing is a flow control mechanism in TCP that manages the amount of unacknowledged data that can be sent, not a routing behavior.
- B. Global synchronization is a TCP phenomenon where multiple TCP flows simultaneously reduce their congestion windows, often leading to poor overall network utilization.
- C. MSS (Maximum Segment Size) is a TCP parameter that defines the largest amount of data, specified in bytes, that a computer or communications device can receive in a single TCP segment.
Concept tested. Asymmetric routing concept
Reference. https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/116279-technote-ip-routing-00.html
Topics
#Asymmetric routing#Routing paths#IP routing
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