多项选择题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.多项选择题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.多项选择题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.多项选择题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.多项选择题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.

6.单项选择题On the assumption that every OSPF router in a particular area is configured with there is no loopback interface set?()

A. The IP address of the first Fast Ethernet interface.
B. The IP address of the console management interface.
C. The highest IP address among its active interfaces.
D. The lowest IP address among its active interfaces.
E. There will be no router ID until a loopback interface is configured.

7.单项选择题Under which circumstance, ie network type, would an OSPF router establish a neighbor adjacency, even though the DR/BDR election process was not performed?()

A. Point-to-point
B. Broadcast multicast
C. Nonbroadcast multicast
D. Backbone area 0
E. Virtual Link

10.多项选择题In EIGRP, what kind of route information is stored in the RAM of the router and maintained by way of hello packets and update packets?()

A. Neighbor Table
B. SRF Table
C. RTP Table
D. Topology Table
E. Query Table
F. Dual Table

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