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Exam JN0-349 All Questions

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Exam JN0-349 topic 1 question 26 discussion

Actual exam question from Juniper's JN0-349
Question #: 26
Topic #: 1
[All JN0-349 Questions]

Which three statements describe what happens when processing a frame for a switched packet? (Choose three.)

  • A. The ingress PFE performs the MAC address lookup.
  • B. The frame enters the ingress port and is forwarded out all ports.
  • C. The frame enters the ingress port and is processed by the ingress PFE.
  • D. The ingress PFE sends the header information to the Routing Engine.
  • E. The egress PFE forwards the packet out the egress port towards the destination.
Show Suggested Answer Hide Answer
Suggested Answer: ACD 🗳️
by Nasredd at April 22, 2023, 10:37 p.m.

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vn2905
1 year, 2 months ago
The PFE can switch without involvement of the RE. Only exception / local or control traffic is forwarded to the RE. So for normal switching, there is no need to send a header of a frame to the RE. That's why D is not a correct answer.
upvoted 1 times
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Nasredd
1 year, 7 months ago
Selected Answer: ACD
A : Ingress PFE performs a MAC address lookup and determines source MAC is unknown. C : Frame enters ingress port and attached ingress PFE. C : Frame enters ingress port and attached ingress PFE. D: Ingress PFE sends header information to RE, where MAC is added or discarded (MAC limiting).
upvoted 3 times
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C (25%)
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