ccnav7 introduction to networks

ccnav7 introduction to networks.7. DoTTL implements a hop limit that prevents IP packets from being transmitted endlessly through a routing loop. A is incorrect because horizontal partitioning is used to prevent small routing loops by prohibiting routes from being advertised out of the interface that received it; B and C are used to prevent large routing loops: they improve network stability by requiring all routers to be informed of the failed route before accepting the alternative path.8. Ao horizontal partitioning is used to prevent small routing loops by prohibiting routes from being advertised out of the interface that received it. B is incorrect because reverse suppression sets the metric of the route to infinity, sends it to the neighboring router, and allows the neighbor to then advertise it to the originating router. C is incorrect because the suppression timer specifies how long the suppressed route will remain in the routing table; D is incorrect because the hop limit is used to prevent packets from going on endlessly in the routing loop.9. the metric for Bo suppressed routes is infinity. A is incorrect because it is a metric for directly connected routes; administrative distance is used to rank routing protocols, so neither C nor D is correct.10. If Co sees the ICMP message "TTL exceeded during transmission", it means that either the distance to the destination network exceeds the number of hops supported by the routing protocol or there is a routing loop (the maximum number of hops supported by RIP is 15). o A and D are incorrect because if this is the case, a network or destination device unreachable message will be received. reach message; B is incorrect because administrative distance is used to rank routing protocols and to determine which routing protocol-provided route is added to the routing table when there are multiple routing protocols that provide routes to the same network.Chapter 15Router Initial Configuration15.01 Hardware Components of the Router 15.05 Single-Arm Router 15.02 Two-Minute Sprint Through the Router Startup Process 15.03 Disabling Unused Services Self-Test Questions 15.04 Configuring the RouterThis chapter builds on the configuration concepts discussed in Chapter 10 and introduces the basic commands used to access and configure Cisco IOS routers.x These commands are much like the commands used for CatalystIOS switches. The benefit of this similarity is that you do not have to relearn the command line interface (CLI). o This chapter begins by introducing the hardware components of the router and its startup process. including using the system configuration dialog script: it gives you information about how you want to configure the router. You will also learn about a new feature added in version 12.3T one-by-one AutoSecure0 Finally, this chapter describes the commands used to create basic configurations on the I0S router, including configuring the trunk interface.Certification H Standard 15.0115.1 Hardware Components of a Router