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Exam 300-115 topic 4 question 177 discussion

Actual exam question from Cisco's 300-115
Question #: 177
Topic #: 4
[All 300-115 Questions]

What is the value of the TPID/tag protocol identifier of QinQ?

  • A. 0x8a88
  • B. 0x8100
  • C. 0x8b45
  • D. 0x8200
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Suggested Answer: A 🗳️
by robergalvan at Feb. 2, 2019, 7:34 p.m.

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diegonamaste
5 years, 10 months ago
QinQ isn't not a topic on Cisco Official Guide. This question does not make sense.
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Darshit
6 years ago
Can you please describe in brief?
upvoted 1 times
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robergalvan
6 years, 2 months ago
The second tag is assigned an ethertype of 0x88A8 (instead of the .1Q standard 0x8100) by default. (An old non-standard 802.1QinQ protocol used 0x9100.)
upvoted 2 times
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