Exam 300-425 topic 1 question 54 discussion

D - AP regulatory domain is set when shipped, this can’t be changed. Country codes are changed manually on the WLC, not the regulatory domain. The country set must be in the regulatory domain of any associated APs. There is no setting for continent.

I think this is a very tricky question but when you try to reflect on it, you can see that it's an obvious A. Different regions have different regulatory restrictions w/c limits the available channels. The “least restrictive” will obviously allow for the greatest # of available channels, hence B is incorrect as it does the reverse. C is also incorrect since regulatory domain can vary in a single continent while with D, one can still face the challenge of countries with stricter regulations. The question said “regardless of the region deployed”.

I want to change my answer , as I see this link. Mesh network are exception and during Mesh design we should consider one WLC per country, but but ... The question is asking *highest number of channels available to the backhaul, regardless of region deployed* then we should have additional WLC in the least restrictive regulatory domain. So A is correct choice.https://mrncciew.com/2013/04/07/configuring-country-codes-on-wlc/

C is correct. There is an exception for MESH APs where you have to configure single country code on WLC for them to register. https://mrncciew.com/2013/04/07/configuring-country-codes-on-wlc/

Answer D.

D - Will guarantee each location will have access to all the channels allowed for that location.

Tricky question from Cisco. One can configure multiple country codes on a WLC, however that is not possible for mesh APs: " There is an exception for MESH APs where you have to configure single country code on WLC for them to register." (https://mrncciew.com/2013/04/07/configuring-country-codes-on-wlc/) Since the question is asking about a mesh deployment, the correct answer is D.

https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/country_codes.html I think A could be the answer. From Release 8.2 onwards, you can configure up to 110 country codes per controller. This multiple-country support enables you to manage access points in various countries from a single controller. So I have not problem to manage manay APs in different countries.

I am afraid that I don't understand the question. @RogerTheLodger: You can select multiple countries at the controller. The APs (which regulatory domain indeed can't be changed) can be bound to a compatible country in the WLC. So in one WLC you can support APs from multiple countries (with their different regulatory domains)

Answer: A