Refer to the exhibit. Which three statements describe the steps that are required to configure an IPsec site-to-site VPN using a GRE tunnel？（）
Refer to the exhibit. Which order correctly identifies the steps to provision a cable modem to connect to a headend as defined by the DOCSIS standard？（）
Refer to the exhibit. MPLS has been configured on all routers in the domain. In order for R2 and R3 to forward frames between them with label headers, what additional configuration will be required on devices that are attached to the LAN segment?（）
Refer to the exhibit. What are the two options that are used to provide High Availability IPsec？（）
