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Exam DES-5221 All Questions

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Exam DES-5221 topic 1 question 11 discussion

Actual exam question from Dell's DES-5221
Question #: 11
Topic #: 1
[All DES-5221 Questions]

Using the MAC 8c-ec-4b-5b-61-9d, what is a valid EUI-64 link local address?

  • A. 2001::a9:8eec:4bff:fc5b:619d
  • B. fe80::a9:8cec:4bff:fe5b:619d
  • C. ff80:a9:8eec:4bff:fe5b:619d
  • D. fe80::a9:8eec:4bff:fe5b:619d
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Suggested Answer: B 🗳️
by lobana at June 4, 2021, 8:54 a.m.

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chiaki123
3 years, 1 month ago
Correct : D - We take the MAC address and split it into two pieces. - We insert “FFFE” in between the two pieces so that we have a 64 bit value. - We invert the 7th bit of the interface ID. 8cec::4bFF::FE5b::619d 8 c 1000 1100 1000 1110 8 e 8eec::4bFF::FE5b::619d
upvoted 3 times
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examtaker7306
3 years, 1 month ago
fe80::a9:8cec:4bff:fe5b:619d has 8cec in the mac address but all others do not. B has to be the correct answer.
upvoted 1 times
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examtaker7306
3 years, 2 months ago
I think B is correct based on this link. iobana your thoughts after reading the link below please. https://community.cisco.com/t5/networking-documents/understanding-ipv6-eui-64-bit-address/ta-p/3116953
upvoted 1 times
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lobana
3 years, 7 months ago
Correct answer: D
upvoted 2 times
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