Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 222
A university has three campus locations and the main data center. Each campus location has a Cisco Catalyst 9800-40 WLC that manages 600 APs. The data center has a Catalyst 9800-40 WLC, which serves as an N+1 backup for each campus WLC. A consulting engineer must install four additional Catalyst 9800-40 WLCs to serve as the high availability SSO pair for each campus, but only two have been approved due to budget restrictions. The new WLCs must be implemented using these requirements:
• Data center WLC must always be available as N+1 backup to either campus WLC.
• Campus1 WLC must operate with zero downtime.
• In the event of multiple campus outages, the AP priority order is to support Campus3, Campus2, and then Campus1.
• No APs on campus can be left stranded without a WLC in the event of an outage.
What design approach must the consulting engineer take?
Answer options
- A. The data center WLC and Campus1 WLC are the high availability SSO pair. Campus3 APs have priority 4, Campus2 APs have priority 2, and Campus1 APs have priority 1.
- B. The data center WLC and Campus3 WLC are the high availability SSO pair. Campus1 APs have priority 4, Campus2 APs have priority 2, and Campus3 APs have priority 1.
- C. The Campus1 WLC is the high availability SSO pair. The data center WLC is split into two WLCs, Data Center1 and Data Center2. Campus3 APs have priority 4, Campus2 APs have priority 2, and Campus1 APs have priority 1.
- D. The Campus3 WLC is the high availability SSO pair. The data center WLC is split into two WLCs, Data Center1 and Data Center2. Campus3 APs have priority 1, Campus2 APs have priority 2, and Campus1 APs have priority 4.
Correct answer: A
Explanation
The correct answer is A because it ensures that the data center WLC remains as an N+1 backup for Campus1, which is crucial for maintaining zero downtime. The AP priority order adheres to the specified requirements, ensuring that Campus3 is prioritized over Campus2 and Campus1, thus preventing any APs from being stranded. The other options do not meet the requirement for zero downtime or the correct AP priority order.