1.0 Network Infrastructure and Connectivity

IPv6 Addressing Troubleshooting Practice Questions

Updated for CCNA v2.0

Modified EUI-64, prefix sizing, SLAAC prerequisites, and IPv6 address types.

Author-reviewed by LabFabric · 25 September 2026 · Report a content issue

One solved question, so you can see how these are marked

An interface has the MAC address 0011.2233.4455. What is its modified EUI-64 interface identifier?

0211:22FF:FE33:4455

Split the MAC in half, insert FFFE in the middle, and flip the seventh bit of the first byte. 00 becomes 02, giving 0211:22FF:FE33:4455.

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