Refer to the exhibit.

A network architect is designing the logical topology for a campus LAN networking solution. The
customer requires support for 2400 edge ports, which is provided by 10 intelligent Resilient
Framework (IRF) groups at the access layer. This customer does not have a wireless network nor
anticipants adding one in the next two years. However, the customer does want to authenticate
users with 802.1X and use the network RADIUS server to divide users from different groups into
different VLANs. The customer has three user groups, each of which includes between 600 and
900 users.
Additionally, the customer understands that the RADIUS server will require several policies but
wants to keep these policies as simple and easy to maintain as possible.
How can the network architect ensure that the solution meets the customer needs and also follows
best practice?

A.
Assign a /23 subnet to each VLAN so that the VLAN can accommodate the required number of
users, even if users connect multiple devices

B.
Plan a different VLAN ID and subnet address for each user group on each access layer IRF
group. Either core or access layer routing will work for this solution

C.
Use access layer routing. Assign a different subnet to VLAN2 on one access layer IRF group
then the VLAN2 on the another access layer group

D.
Plan a solution for designing dissolvable agents to the endpoints so that they can complete
802.1X authentication seamlessly