CCNP ROUTER(300-101) 문제풀이 NO. 29

QUESTION NO: 29

After you review the output of the command show ipv6 interface brief, you see that several IPv6
addresses have the 16-bit hexadecimal value of "FFFE" inserted into the address. Based on this
information, what do you conclude about these IPv6 addresses?

A. IEEE EUI-64 was implemented when assigning IPv6 addresses on the device.
B. The addresses were misconfigured and will not function as intended.
C. IPv6 addresses containing "FFFE" indicate that the address is reserved for multicast.
D. The IPv6 universal/local flag (bit 7) was flipped.
E. IPv6 unicast forwarding was enabled, but IPv6 Cisco Express Forwarding was disabled.

Explanation
문제 : show ip ipv6 interface brief 명령어의 출력을 검토 한 후 여러 IPv6주소에 16비트 16진수값 FF FE가 삽입된 것을 확인 했습니다.
이 정보를 바탕으로 당신이 IPv6주소에 관하여 결론 짓는 것은 무엇인가요?

22번 문제와 연관이 있습니다.

다음은 Show ip ipv6 interface brief 명령어 예시 입니다.

IPv6 주소 128bit Prefix 64bit Interface ID 64bit로 구성되는데 MAC주소 48bit 중간에 16bit(FF FE)를 추가해서 Interface ID 64bit를 만드는 방식을
EUI-64 방식이라고 합니다.
따라서 정답은 A입니다.



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