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cheet sheets: bscn (640-503) copyright keen interactive 2000 last update: 8/7/00 1. which of the following are true regarding route filtering? a. it uses the same technique as packet filtering; it’s based on standard or extended access-lists b. it is required when using eigrp and ospf at the same time c. unlike packet filtering (which uses inverted subnet masks, route filtering uses normal subnet masks d. route filtering is used only while performing route redistribution 2. which of these are benefits of incorporating hierarchical addressing? a. you can summarize multiple routes into single route summaries, making the network more scalable b. a contiguous address assignment allows the most efficient use of address c. reduction in the number of routing table entries for participating routers d. a more efficient allocation of addresses network-wide e. a reduced number of routing table entries for participating routers 3. how can a single ip statement indicate many ip addresses? a. source-route bridge b. route summarization c. helper address d. default gateway e. passive interface 4. what essential reasons make ospf better than rip1? a. ospf can select paths based on bandwidth b. link-state protocols generally have faster convergence than distance-vector c. ospf supports vlsm d. ospf has no hop count limitation BECause it is based on path cost e. ospf can select paths based on bandwidth 5. which of the following are true of eigrp? a. it only sends change-updates to the systems that are affected by the event b. it can provide client address conflict resolution c. it is considerably more complex than ospf d. it supports variable length subnet masking e. it supports compression over the wan link 6. what command will show the link-state database? 7. which of the statements below correctly describes the gbp regular expression ‘^200_’? a. match only as 200 b. match all as’s c. match strings received from as 200 d. match strings originating from as 200 8. what is a bgp peer? a. a bgp neighbor that the router has formed a tcp connection with b. another bgp router that the router is currently speaking with c. another bgo router that the router is unable to speak with d. abgp neighbor that the router has a broken tcp connection with 9. which of the following are true of bgp? a. ibgp is used between the as b. ibgp is used within the as c. ebgp is used between the as d. ebgp is used within the as 10. what command will view all and only eigrp-built routes? 11. an ospf stubby or totally stubby area can only exist if adjacent to which of the following? a. lsa b. lsp c. bdr d. abr e. dr f. lsu 12. what command allows the operator to scroll through all currently tcp/ip routing protocols while displaying detailed information about them? 13. you stop sending rip broadcasts from all router interfaces that do not require it. you notice that rip is running on ethernet0, serial0, and serial1 on the router in question. you find out that serial0 does not need rip. you want to shut down that protocol but only on that interface without using access-lists. how? a. configure rip using the ‘passive interface’ command b. configure rip using the ‘no router rip’ command c. configure serial0 using the ‘shutdown rip’ command d. configure an outbound route filter on serial0 for rip 14. why will an eigrp route get stuck in the active state? a. the eigrp router on the far end of the link has crashed b. the reply to a query caused by a change in a route takes too long and times out c. the physical link between the two as’s has gone down d. the network is unstable and probably has a routing loop  |
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