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When planning an image upgrade for a large number of Access Points (APs) across remote sites with limited WAN bandwidth, it’s crucial to minimize WAN utilization. The best approach in this scenario is:

Predownload the new code to the APs (Option A): This method involves sending the new firmware image to all APs before actually rebooting them with the new image. It allows APs to download firmware when network usage is low, thus minimizing impact during peak hours.

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

The remote LAN (RLAN) feature on the OfficeExtend Access Point (OEAP) is used to extend the wired network through more than one port. This allows the creation of a wired interface on the OEAP that can be associated with a specific VLAN, providing connectivity for wired devices at remote locations. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

In a Cisco Wireless LAN Controller (WLC), AP groups are used to manage the distribution of WLANs to different access points (APs). By configuring AP groups, an engineer can specify which WLANs are broadcasted by which APs. This allows for the creation of multiple WLANs across different APs without the need to create new interfaces for each WLAN. AP groups provide the flexibility to control WLAN availability based on location or other criteria, ensuring that only the intended WLANs are available through specific APs.

On a Cisco Catalyst 9800 Series Wireless Controller, the command set that prevents a FlexConnect AP from allowing wireless clients to connect when its Ethernet connection is nonoperational is the fallback-radio-shut command within the FlexConnect profile configuration. This command disables the radios on the AP, thus preventing client connections during Ethernet link failure. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 To ensure that the guest network uses only lower rates instead of 802.11n data rates, the WMM (Wi-Fi Multimedia) policy of the WLAN should be set to disabled ©. This will prevent the use of 802.11n data rates, which require WMM to be enabled. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 A single SSID method satisfies the requirements for a BYOD policy that includes onboarding unknown machines, scalability, and low overhead on the wireless network. It simplifies network access for users and reduces overhead by minimizing broadcast traffic associated with multiple SSIDs.

 On a WLAN that uses IEEE 802.1X for wireless network authentication, enabling local EAP allows clients to authenticate using locally stored credentials on the Cisco Wireless LAN Controller (WLC), which is useful in scenarios where the external RADIUS server is unavailable. The LDAP server option is used to authenticate clients against a central repository, such as an LDAP directory. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 The configuration for the Rogue Rule named “Rule 1” is set to classify an access point (AP) as malicious if it meets certain conditions. The rule specifies that the AP must have a Minimum RSSI (Received Signal Strength Indicator) of less than or equal to -65 dBm and must have been seen for a Time Duration greater than or equal to 3600 seconds. Among the options provided, both A and C have been seen for more than 3600 seconds, which satisfies the Time Duration condition. However, for the RSSI condition, only option C with an RSSI of -60 dBm meets the criteria of being less than or equal to -65 dBm. Therefore, option C is the correct answer, as it fulfills both conditions set by the Rogue Rule.

The Cisco Aironet 1800s Active Sensor is designed to work with Cisco DNA Center. It is a compact, flexible sensor that provides insights into the wireless network’s health and is used for proactive monitoring and troubleshooting. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, which includes information on Cisco DNA Center and compatible AP models.