mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Consider the following DHCPv6 configuration on…
Consider the following DHCPv6 configuration on router R2:
ipv6 dhcp pool DHCP6_POOL dns-server 2001:db8::1 domain-name example.com !
interface GigabitEthernet0/0
ipv6 address 2001:db8:1::1/64 ipv6 dhcp server DHCP6_POOL ipv6 nd other-config-flag
no shutdown
What is the effect of this configuration?
⚠ Common exam trap
Cisco often tests the distinction between the M-flag (stateful DHCPv6) and O-flag (stateless DHCPv6), and the trap here is that candidates confuse the `other-config-flag` with the `managed-config-flag`, leading them to incorrectly think DHCPv6 provides addresses when it only provides other parameters.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Hosts on this subnet will use SLAAC to obtain their IPv6 address and then use DHCPv6 to get DNS and domain information.
The configuration uses the `ipv6 nd other-config-flag` command, which sets the 'Other Configuration' flag (O-flag) in Router Advertisement (RA) messages. This tells hosts to use Stateless Address Autoconfiguration (SLAAC) for their IPv6 address (based on the prefix in the RA) and then use DHCPv6 (stateless DHCPv6) only to obtain additional parameters like DNS server and domain name, as defined in the DHCPv6 pool.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Hosts on this subnet will use SLAAC to obtain their IPv6 address and then use DHCPv6 to get DNS and domain information.
Why this is correct
The other-config-flag indicates that hosts should use SLAAC for addressing and DHCPv6 for additional parameters, which is stateless DHCPv6.
- ✗
Hosts will obtain both their IPv6 address and DNS information from the DHCPv6 pool.
Why it's wrong here
The other-config-flag means DHCPv6 is only for other configuration, not for address assignment. For address assignment, the managed-config-flag would be needed.
- ✗
The DHCPv6 pool is missing the address prefix, so it will not provide any configuration to clients.
Why it's wrong here
In stateless DHCPv6, the pool does not need an address prefix; it only provides other parameters like DNS and domain.
- ✗
The ipv6 nd other-config-flag command is ignored because the DHCPv6 server is configured on the interface.
Why it's wrong here
The flag is not ignored; it works together with the DHCPv6 server to provide stateless configuration.
Visual reference
Go deeper
Related to this question
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.