The two required steps are creating a DHCPv6 pool with an address prefix and applying that pool to the interface using the `ipv6 dhcp server POOL_NAME` command. This is correct because stateful DHCPv6 server configuration demands that the router both define a pool of assignable IPv6 addresses via the `ipv6 dhcp pool` command and then bind that pool to a specific interface so the server can respond to client solicitations on that link. On the Cisco CCNP ENARSI 300-410 exam, this concept tests your understanding of the distinction between stateful and stateless DHCPv6—a common trap is forgetting that stateful requires both a pool definition and an interface-level application, while stateless only needs the `ipv6 dhcp server` command with the `rapid-commit` option. A helpful memory tip is "Pool then Place": first create the pool with the prefix, then place it on the interface.
300-410 DHCP (IPv4 and IPv6) Practice Question
This 300-410 practice question tests your understanding of dhcp (ipv4 and ipv6). This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO configuration steps are required to enable a Cisco IOS router as a stateful DHCPv6 server for clients on interface GigabitEthernet0/0? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a DHCPv6 pool with the 'ipv6 dhcp pool POOL_NAME' command and define an address prefix.
Option A is correct because the 'ipv6 dhcp pool POOL_NAME' command creates a DHCPv6 pool, and defining an address prefix within that pool is required to specify the IPv6 addresses that the server can assign to clients. This is the fundamental step for configuring a stateful DHCPv6 server, as the pool holds the address allocation parameters.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Configure a DHCPv6 pool with the 'ipv6 dhcp pool POOL_NAME' command and define an address prefix.
Why this is correct
The pool defines the address range and parameters for stateful assignment.
Related concept
Read the scenario before looking for a memorised answer.
✓
Apply the DHCPv6 pool to the interface using 'ipv6 dhcp server POOL_NAME' under the interface configuration.
Why this is correct
This enables the DHCPv6 server on that interface.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure the interface with 'ipv6 dhcp client POOL_NAME'.
Why it's wrong here
This command is used on a client, not a server.
✗
Set the 'ipv6 nd managed-config-flag' on the interface.
Why it's wrong here
This flag tells clients to use DHCPv6, but it is not a server configuration step.
✗
Enable IPv6 on the interface with 'ipv6 enable'.
Why it's wrong here
This enables IPv6 but does not configure the DHCPv6 server.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between server-side and client-side DHCPv6 commands, and the trap here is that candidates confuse 'ipv6 dhcp server' (server) with 'ipv6 dhcp client' (client) or think that enabling IPv6 on the interface alone is sufficient for DHCPv6 operation.
Trap categories for this question
Command / output trap
This command is used on a client, not a server.
Detailed technical explanation
How to think about this question
Stateful DHCPv6 (RFC 3315) requires the server to maintain state information about assigned addresses and options. The 'ipv6 dhcp pool' command creates the configuration container, and the 'prefix-delegation' or 'address' subcommands define the address range. The 'ipv6 dhcp server' command binds the pool to an interface, enabling the server to listen for Solicit and Request messages on that link. In real-world deployments, the 'ipv6 nd managed-config-flag' is often set to inform clients via Router Advertisements to use DHCPv6 for address assignment, but it is not a mandatory step for the server itself.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
DHCP (IPv4 and IPv6) — This question tests DHCP (IPv4 and IPv6) — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a DHCPv6 pool with the 'ipv6 dhcp pool POOL_NAME' command and define an address prefix. — Option A is correct because the 'ipv6 dhcp pool POOL_NAME' command creates a DHCPv6 pool, and defining an address prefix within that pool is required to specify the IPv6 addresses that the server can assign to clients. This is the fundamental step for configuring a stateful DHCPv6 server, as the pool holds the address allocation parameters.
What should I do if I get this 300-410 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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