Section: Cisco Meraki
Explanation/Reference: https://developer.cisco.com/meraki/mv-sense/#!mqtt/lux-light-levels

The correct code snippet for detecting a change in OSPF neighbors and displaying an alert message is Option C: This option includes a check for 'OSPF-neighbor-state-change' within the 'Correlation Engine' data returned by the API call. If this key exists and its value is not 0, indicating a state change has occurred, it prints out an alert message "OSPF neighbor change detected!" This logic correctly implements the required functionality.
References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

ZTP
Explanation:
Zero Touch Provisioning (ZTP) is a method used to automate the process of configuring network devices without manual intervention. When a device is first powered on, it uses DHCP to obtain an IP address and other network settings, including the location of a TFTP server from which it can download its initial configuration. This allows devices to be deployed at scale with minimal effort, as they can automatically configure themselves as soon as they are connected to the network. References := (Automating Cisco Enterprise Solutions Official Cert Guide)

Section: Cisco SD-WAN
Explanation/Reference: https://sdwan-docs.cisco.com/Product_Documentation/vManage_Help/Release_17.1/Configuration/ Certificates