N10-005 · Question #532
Which of the following is used to embed the MAC address of an Ethernet interface in a corresponding IPv6 address?
The correct answer is C. EUI-64. EUI-64 (Extended Unique Identifier-64) is the process used to automatically derive a 64-bit interface identifier for an IPv6 address from a device's 48-bit MAC address. The process works by splitting the MAC address in half, inserting the 16-bit value 'FFFE' in the middle, and…
Question
Which of the following is used to embed the MAC address of an Ethernet interface in a corresponding IPv6 address?
Options
- ASubnet
- BIANA prefix
- CEUI-64
- DSite-local
How the community answered
(46 responses)- A2% (1)
- B2% (1)
- C89% (41)
- D7% (3)
Explanation
EUI-64 (Extended Unique Identifier-64) is the process used to automatically derive a 64-bit interface identifier for an IPv6 address from a device's 48-bit MAC address. The process works by splitting the MAC address in half, inserting the 16-bit value 'FFFE' in the middle, and then flipping the seventh bit (the Universal/Local bit) of the first octet. This creates a globally unique 64-bit value that is embedded in the host portion of the IPv6 address, enabling stateless address autoconfiguration (SLAAC). A subnet identifies a network segment. An IANA prefix is a range of IP addresses allocated by IANA. Site-local is a deprecated IPv6 address scope similar to private IPv4 addresses.
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