A.2001：db8：3811：：1
B.2001：db8：3811：：2323
C.2001：db8：3811：：0130
D.2001：db8：3811：：3
E.2001：db8：3811：：6

A.Flooding paths and redundancy
B.Amount of routing information in the OSPF area or routing domain
C.Number of routers with Cisco Express Forwarding enabled
D.Number of neighbor adjacencies
E.Other routing protocols in use
F.OSPF timer reconstruction negotiation
G.Redistribution with BGP neighbors
H.Redistribution with other IGP routing protocols， such as RIP or EIGRP

A. BGP peers must be Layer 2-adjacent
B. EBGP multihop is not configured
C. The firewall is not configured to allow IP protocol 89
D. The firewall is not configured to allow UDP 179.

A. Router ISP1 should be configured to peer with router B
B. Router ISP2 should be configured with no synchronization
C. Router ISP1 should be configured with no synchronization
D. Router ISP2 should be configured with no auto-summary.
E. Router ISP1 or IPS2 should be configured with network 176.16.10.0 mask 255.255.255.0

A.It relies on IPv6 to do the fragmenting.
B.It splits the LS Update packet into smaller packets.
C.It splits the LSA into smaller router LSA packets.
D.It produces an error.

A. The routers are not on the same network.
B. The network statements do not match.
C. The process number does not match.
D. The MTU does not match.
E. The OSPF cost does not match.
F. There is a physical issue with the cable.

A. The network statements are misconfigured.
B. The IP address statements are misconfigured.
C. The autonomous system is misconfigured.
D. There is a physical issue with the cable.

A. 0
B. 1
C. 2
D. 3
E. 4

A. LSA 1
B. LSA 3
C. LSA 4
D. LSA 5
E. LSA 7

A. They are used to summarize area routes to other areas.
B. They are used in not-so-stubby areas to propagate external routes.
C. They are used to notify areas of the ASBR.
D. They are flooded to all areas except stub areas （external route）.

A.00000
B.12345
C.23456
D.65000
E.99999