To ensure the 1810 OEAP can join the controller from remote teleworker locations, the firewall must allow specific UDP ports that are used for AP communication with the controller. UDP ports 5246 and 5247 are used for Control and Provisioning of Wireless Access Points (CAPWAP) control and data messages, while UDP ports 12222 and 12223 are used for OfficeExtend APs’ data traffic. Blocking these ports would prevent the APs from joining the controller, hence they must be allowed on the firewall.

The Voice VLAN feature on switches allows the network to distinguish between voice traffic and data traffic from wireless clients connected to IP phones. This is crucial for applying the appropriate QoS to ensure that voice traffic is prioritized over client data traffic. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

The image provided shows a packet capture with multiple entries displaying UDP traffic between two IP addresses using different ports (notably port number ‘16666’ which is commonly used for NMSP). Network Mobility Services Protocol (NMSP) is used by wireless controllers like WLCs to communicate with management software such as Cisco’s Mobility Services Engine or CMX. This protocol helps in managing various mobility services across wireless networks. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To collect user demographic information in exchange for guest WLAN access and to have a customized portal per location, the marketing department should tie the Facebook social connector into Cisco CMX. Facebook is widely used for social login features and provides access to demographic data when users consent, making it the ideal choice for this requirement. References: The use of social connectors for demographic data collection is discussed in the context of advanced location services in the official certification guide.

 For an enterprise wireless network with distributed offices globally and APs configured in FlexConnect mode, enabling FlexConnect local authentication is essential to support 802.11r and CCKM. This configuration allows for fast roaming and maintains a secure connection by locally authenticating the clients without having to go back to the central site, thus providing a seamless and efficient roaming experience for the users.

 Cisco AVC (Application Visibility and Control) on a Cisco Wireless LAN Controller (WLC) is used to prioritize traffic by marking the packets. For Cisco IP cameras that use the wireless network, the AVC rule would be configured to mark the packets with a specific QoS value, ensuring that the video traffic is treated with higher priority as it traverses the network. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The true statement about the VideoStream/Multicast Direct feature is that each VideoStream client acknowledges receiving a video IP multicast stream. This feature enhances the reliability of IP multicast traffic over WLAN by using client acknowledgments to ensure delivery.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )