Juniper
JN0-102 · Question #42
JN0-102 Question #42: Real Exam Question with Answer & Explanation
The correct answer is B. Exception traffic is rate-limited across the internal link to protect the RE.. Exception traffic, which is destined for the Routing Engine, is rate-limited across the internal link from the PFE to protect the RE from being overwhelmed.
Junos OS Fundamentals
Question
Which statement is correct regarding exception traffic processing?
Options
- AException traffic is only handled by the PFE.
- BException traffic is rate-limited across the internal link to protect the RE.
- CException traffic is not prioritized during times of congestion.
- DException traffic is forwarded based on forwarding table entries.
Explanation
Exception traffic, which is destined for the Routing Engine, is rate-limited across the internal link from the PFE to protect the RE from being overwhelmed.
Common mistakes.
- A. Exception traffic is initially detected by the PFE but is then sent to the RE for processing, meaning it is not handled only by the PFE.
- C. Exception traffic, especially control plane protocols, is often prioritized to ensure network stability, even during congestion, although it is rate-limited.
- D. Exception traffic is destined for the local router (RE) and is processed by the RE; it is not forwarded based on the general forwarding table entries used for transit traffic.
Concept tested. Exception traffic processing and RE protection
Topics
#exception traffic#Junos architecture#control plane protection#RE#PFE
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