Which statements are true regarding classless routing protocols?（）

多项选择题Which of the following statements regarding EIGRP successor routes is valid?（）

A. A successor route is used by EIGRP to forward traffic to destination.
B. Successor routes are saved in the topology table to be used if the primary route fails.
C. Successor routes are flagged as "active" in the routing table.
D. A successor route may be backed up by a feasible successor route.
E. Successor routes are stored in the neighbor table following the discovery process.

单项选择题In what location are EIGRP successor routes stored?（）

A. In the routing table only.
B. In the neighbor table only.
C. In the topology table only.
D. In the routing table and neighbor table.
E. In the routing table and topology table.
F. In the topology table and neighbor table.

单项选择题A new network has been configured using OSPF as the routing protocol. With which network type will OSPF establish router adjacencies but not perform the DR BDR election process?（）

A. point-to-point
B. Backbone area 0
C. Broadcast multicast
D. Non-broadcast multi-access
E. The DR/BDR process is done for all interface types

单项选择题The routers named Testking1 and Testking2 are both configured with RIP only.What will happen in the event of Testking1 receiving a routing update that contains a higher cost path to a network already in its routing table?（）

A. The update information will be added to the existing routing table.
B. The update information will replace the existing routing table entry.
C. The update will be ignored and thus no further action will occur.
D. The existing routing table entry will be purged from the routing table and all routers will attempt convergence.

单项选择题The Testking network has been configured with OSPF as the routing protocol.What is the default administrative distance of the OSPF routing protocol?（）

A.90
B.100
C.110
D.120
E.130
F.170
G.200