A.R4 and ee8c.aOc2.bat3 only established IPv4 IS-IS neighbors

B.R4 and ee8c.aOc2.baf3 have established IPv4 and IPv6 IS-IS neighbors

C.R4 does not have any IS-IS neighbors

D.R4 and ee8c.aOe2.baf3 only established IPv6 IS-IS neighbors

A.Enable the DHCP Snooping function in the interface view, then all the DHCP message command functions under the interface will take effect

B.Enable DHCP Snooping globally, without any post parameters, the device only processes DHCPv4 messages by default

C.Enable the DHCP Snooping function in the VLAN view, and the command function of DHCP messages belonging to the VLAN received by all interfaces of the device will take effect

D.DHCP Snooping can prevent illegal attacks by setting trusted ports (all interfaces are untrusted by default)

A.Doesn't have any meaning

B.Does not support IPv6 SPF calculation

C.IPv4 and IPv6 use the same topology for SPF calculation

D.SPF calculation is performed separately in the topology of IPv4 and lpv6

A.Global unicast address

B.Link local address

C.Unique local address

D.IPv6 anycast address

A.The length of the next hop address can be 16 or 3

B.When the length of the next hop address is 16, the Network Address of Next Hop carries the link local address

C.The AFI (address family) value is 2, which represents IPv6

D.The NLRI field carries IPv6 routing prefix and mask information