350-401 Question #750: Real Exam Question with Answer & Explanation

Question

How does an IPv6 host automatically generate a global address?

Options

• AIt prepends its interface identifier to the network prefixes contained in Router Advertisement
• BIt appends its interface identifier to the network prefixes contained in Router Advertisement
• CIt appends its interface identifier to the network prefixes contained in Router Solicitation
• DIt prepends its interface identifier to the network prefixes contained in Router Solicitation

Explanation

An IPv6 host automatically generates a global address by combining a network prefix from a Router Advertisement with its interface identifier.

Common mistakes.

• A. The interface identifier is appended, not prepended, to the network prefix during SLAAC address generation.
• C. Router Solicitation messages are used by hosts to request Router Advertisements, but the address prefixes themselves are contained within Router Advertisement messages, not Router Solicitations.
• D. The interface identifier is appended, not prepended, and the network prefixes for automatic global address generation are found in Router Advertisement messages, not Router Solicitations.

Concept tested. IPv6 SLAAC address generation

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-3s/ipv6-xe-3s-book/ip6-slaac.html

No community discussion yet for this question.