A.172.31.17.4 /30
B.172.31.51.16 /30
C.172.31.64.0 /18
D.172.31.80.0 /22
E.172.31.92.0 /22
F.172.31.192.0 /18

A.ipv6 address PREFIX_1：：1/64
B.ipv6 autoconfig 2001：db8：2222：7272：：72/64
C.ipv6 autoconfig
D.ipv6 address 2001：db8：2222：7272：：72/64

A.Network A - 172.16.3.48/26
B.Network A - 172.16.3.128/25
C.Network A - 172.16.3.192/26
D.Link A - 172.16.3.0/30
E.Link A - 172.16.3.40/30
F.Link A - 172.16.3.112/30

A.The next routing update can be expected in 35 seconds.
B.The IP address 10.10.10.6 is configured on S0/1.
C.The IP address 10.10.10.8 is configured on S0/1.
D.This route is using the default administrative distance.
E.The 10.10.10.8 network is two hops away from this router.

A.access-group
B.access-list
C.acl
D.firewall packet-filter xxxx inbound/outbound