单项选择题

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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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

单项选择题

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.

多项选择题

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