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a. excessive collisions b. 765 of 2619 frames detected by the network interface were discarded because they contained invalid checksums c. the protocol analyzer is set for the incorrect ethernet frame type d. 2619 frames were seen by the network interface but only 765 frames met the criteria specified in a traffic filter* 22. which bit notifies the connected device that congestion was experienced in the direction of the travelling frame? a. fecn* b. becn c. de d. cir 23. the clear commands ____________. a. can be used to reset statistical counters, delete entries from internal router tables, or reset hardware logic* b. work by using the error messages generate by routers when a datagram exceeds its ttl c. list the output of the currently running configuration and the state of the router d. can be used to isolate between a routing, data link, or physical infrastructure issue and an application/transport problem 24. which of these commands will reset the counters displayed by the show frame-relay pvc command for interface serial 1? a. clear interface serial 1 b. clear counters serial 1* c. clear counters d. clear all 25. your local office installs a nortel router and the corporate office installs a cisco 2500 series router. which frame encapsulation type should be run between the two routers? a. ietf* b. cisco c. frame d. serial 26. what command will display all directly connected cisco devices and information about the devices’ software, data link, and network configuration? 27. in cisco terminology, the ______ of ______ is the boundary of the area that is affected by the network failure or problem. 28. a workstation cannot resolve appletalk names to their addresses but can ping the local router interface’s appletalk address. which of these commands issued on the router might display useful information regarding the problem? a. debug apple arp b. show debug nbp c. debug apple nbp* d. debug apple zip 29. a standard isdn rj-45 connector has eight pins. which of the pins provide the power source, as defined by the iso 8877 standard? a. pins 5 and 8 b. pins 3 and 5 c. pins 3 and 6 d. pins 1 and 2* 30. a ________ is a software algorithm that presents packets in a readable and logical format. a. decoder b. packet decode* c. packet recoder d. decoder packet 31. what cisco ios command can be used to display the appletalk name-to-address mapping table? Ez#E uh [此资料转贴于学习网IT认证思科认证 ]ｗww.Ｇzu５21.ｃom Ez#E uh 32. which of the following are connectionless protocols? a. ip* b. atm c. tcp d. udp* e. novell ipx* 33. your users are complaining that they cannot connect to a remote network with ipx netbios applications. which of these commands will bridge these packets? a. ipx bridge b. ipx nlsp c. ipx nlsp enable d. ipx type-20-propagation* 34. what information must you be able to provide when opening a tac case? a. ‘show tech-support’ information* b. contract number* c. name, phone-number, and email address* d. company name* 35. which of these commands should be issued to view messages being sent to the console? a. terminal monitor* b. echo terminal c. terminal echo d. monitor terminal 36. how do you reset the counters displayed by the ‘show interfaces bri 1’ command? a. clear interface bri 1 b. clear bri c. clear arp d. clear counters interface bri 1* 37. which of the following commands is used on an appletalk network to find problems when neighbors become unreachable? a. debug apple events* b. debug apple traffic c. protocol apple verbose d. show apple rtmp 38. per cisco, the ‘show’ commands should provide enough details to diagnose ____ percent of all network failures.   |
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