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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-24 15:24:21 发布人：wongrs | |||
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Exam ccna(640-047) passing score = 755 no of questions =78 time =120 minutes date 24-11-99 I cleared the CCNA(640-047) with 92% marks.It was really a interesting experience for me.The exam was really straight forward.If you have studied the Book thoroughly and done practice exams you can get it easily.but one thing to remember you should have some practical experience that can help a lot espacially for configuration questions. I recommend to study Todd lamlle book thoroughly .there is some command missing in this book for which u can concern ICRC book. some of the areas of question are; 1.OSI model questions espacially related to layer functions 2.encapsulation question information is converted into data data into sgments segments into pakets packets into frames frames into bits 3-Booting of ios The router boot from three resourses First from flash then from tftp then from rom the syntax is router(config)#boot system tftp ios filename tftp server address router(config)#boot system flash ios filename router(config)#boot system rom there were 3-4 questions form wan technologies espacially about frame relay and isdn fram relay dlci(use to identify the frame relay virtual circuit) isdn (BRI-2B+!D b for data transfer and D for signiling) you should also study TCP DOD model thorouhly. espacially functions of LAN and WAN protocols and on which layer they work I hope you will take advantage hope for best for u in future netguy Some helpful Q&A for CCNA 1) You are reviewing a consultant's design for your 10Base2, thin Ethernet, network. The following distances are outlined. Host A to Host B is 190 meters Host B to Host C is 160 meters Host C to Host D is 300 meters Which distances are too far according to the specification? A. Host A to Host B B. Host B to Host C C. Host C to Host D D. No answer is correct Answer: A & C - The specification for 10Base2 is 185 meters (600 feet) on coaxial cable. 2)
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