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單項選擇題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

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1.單項選擇題A routing table contains static, RIP, and IGRP routes destined to the same network with each route set to its default administrative distance. Which route will be the preferred route?（）

A. The RIP route
B. The static route
C. The IGRP route
D. All three will load balance.

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2.單項選擇題What is the maximum number of hops OSPF allows before it deems a network unreachable?（）

A. 15
B. 16
C. 99
D. 255
E. Unlimited

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3.多項選擇題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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4.單項選擇題Which one of the following statements best explains the split horizon rule?（）

A. Only routers can split boundaries (horizons) between networks in separate AS numbers.
B. Each AS must keep routing tables converged to prevent dead routes from being advertised across boundaries.
C. Once a route is received on an interface, advertise that route as unreachable back out the same interface.
D. Information about a route should never be sent back in the direction from which the original update came.

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5.多項選擇題Which of the following routing protocols are less likely prone routing loops and network reachability problems when used in discontiguous networks?（）

A. IGRP
B. CDP
C. OSPF
D. RIP v1
E. RIP v2
F. EIGRP

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