A gold user and a common user access a carrier network through the MPLS Layer 3 VPN. On the entire MPLS network (from PE to PE), the carrier performs queue scheduling for the gold user by trusting the IP priority of the user and for the common user by using the carrier's own operation policy. Which of the following is the tunnel mode of the MPLS differentiated service for the gold user and common user, respectively?

1.Onthe backbone network , if a PE is connect to a CE, VPN instances need to breconfiguredon the PE, and
interface on the PE for connecting to the CE must be bound to a VPN instance. After binding an interface to a
VPN instance, you must configure the IP address of the interface between PEs, IS-IS configured for PE
interworking. PLSA basic capabilities and MPLS LSP are configured for LSP establishment, and MP _IBGP
is configured for VPN route exchange VPN routesexchange , LDAP is short for Label Distribution Protocol,
and IBGP is short for interior Border gateway protocol.
2. A CE exchange route exchange routers with a PE over External Border gateway Protocol (EBGP.
Configure interior gateway protocol (IGP) on the IS-IS+MPLS backbone networking toachievethe
interworking between PEs and IP routers.

The VRRP is enabled on the firewall dual-system Intranet users use NAT to access extranet FTP services
Which of the followingstatements are true?

Which statement about primary VPN tunnel binding is false?

As shown I the figure, the asymmetric VLL FRR networking is used AC interfaces on PE 1, PE 2 and PE 3 are
configured as follows:

Which of the following statements are the true on the condition that IGP and MPLS are configured correctly
on the public network?