多項(xiàng)選擇題On what kinds of networks does OSPF elect a backup designated router?（）

A. Point-to-point
B. Point to multipoint
C. Broadcast
D. Non-broadcast multi-access


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1.多項(xiàng)選擇題Which of the following are true statements regarding the characteristics of OSPF areas? Select all that apply.（）

A. All OSPF networks require the use of multiple areas
B. Multiple OSPF areas must connect to area 0
C. Single area OSPF networks must be configured in area 1
D. Areas can be assigned any number from 0 to 63535
E. Area 0 is called the backbone area
F. Each OSPF area need to be configured with a loopback interface

2.多項(xiàng)選擇題Which two are NOT characteristics of the OSPF routing protocol?（）

A. It confines network instability to a single area of network.
B. It increases the routing overhead of the network
C. It supports VLSM
D. It routes between Autonomous Systems.
E. It allows extensive control of routing updates

4.多項(xiàng)選擇題What are the characteristic of link state routing protocols?（）

A. The exchange of advertisement is triggered by a change in the network.
B. All routers exchange routing tables with each other iIn a multipoint network.
C. Packets are routed based upon the shortest path to the destination.
D. Paths are chosen depending on the cost efficiency factor.
E. Every router in an OSPF area is capable of representing the entire network topology.
F. Only the designated router in an OSPF area can represent the entire network topology.

5.多項(xiàng)選擇題The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?（）

A. Distance vector protocols send the entire routing table to directly connected neighbors.
B. Distance vector protocols are responsible for sending updates to all networks listed in the routing table.
C. Link state protocols are responsible for sending the entire routing table to the whole network.
D. Link state protocols send updates regarding their own links status to all other routers on the network.

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