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Exam 300-410 topic 1 question 427 discussion

Actual exam question from Cisco's 300-410
Question #: 427
Topic #: 1
[All 300-410 Questions]

What is a function of the IPv6 DHCP Guard feature for DHCP messages?

  • A. If the device is configured as a DHCP server, no message is switched.
  • B. All client messages are always switched regardless of the device role.
  • C. It blocks only DHCP request messages.
  • D. Only access lists are supported for matching traffic.
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Suggested Answer: B 🗳️


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Highly Voted 1 year, 5 months ago
Selected Answer: B
DHCPv6 Guard Overview The DHCPv6 Guard feature blocks reply and advertisement messages that come from unauthorized DHCP servers and relay agents. Packets are classified into one of the three DHCP type messages. All client messages are always switched regardless of device role. DHCP server messages are only processed further if the device role is set to server. Further processing of server messages includes DHCP server advertisements(for source validation and server preference) and DHCP server replies (for permitted prefixes). If the device is configured as a DHCP server, all the messages need to be switched, regardless of the device role configuration. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/15-sy/dhcp-15-sy-book/ip6-dhcpv6-guard.pdf
upvoted 8 times
Most Recent 10 months ago
Selected Answer: B
upvoted 1 times
Community vote distribution
A (35%)
C (25%)
B (20%)
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