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CCNABRAINDUMP3(1) |
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作者：佚名 文章来源：不详更新时间：2006-5-30 8:37:54  |
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wrong so double check everything you find in these sites.........especially mine, for all you know I could be some maniac!!!!
Good luck and may the schwartz be with you,
Brian
MCSE/MCT/CCNA/CNA
Test name: Cisco CCNA
Test #: 640-407
I passed the CCNA exam on 5-13-99 on my first try with a 78%. The test is a standard style, 70 quest
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ions in 90 minutes, with passing being 68%.
The quick and dirty synopsis of what I was tested on is this:
About 10 questions directly related to the OSI model, including putting the steps of the lower 4 layers of data encapsulation in order, and the "What layer of the OSI model does this description fit?"
5 or 6 questions on subnetting IP.
About 5 questions related to access-lists. These were the "What will this list filter" or "Will this list do this result" type. There was also one dealing with the proper wild-card mask, but the answers were like nothing I had seen before.
A couple on what is used to prevent routing loops.
Most of the rest were router command syntax. What command will do this, and what does this command do type stuff.
No questions on Apple Talk.
I read two books. the CCNA study guide from Sybex press, and the CCNA exam certification guide from Cisco press. The Cisco press book was published in April '99 (I think) and is a first edition (I think). It had a lot of typo's in it, compared to the Sybex press book. The Sybex press book is good for an introduction to the concepts, but the Cisco press book is much better at preparing you for the test.
I have very little experience with Cisco Routers, and am fairly new to networking. This is not an easy test, but it's not impossible either. Go to Cisco's site and pull down any information they have about the exam objectives.
Good luck.
YapperFlapper CNA, CCNA
KEY POINTS TO BECOME CCNA
1) Know your OSI Model throughly. Just read Todd Lammle's OSI model line by line. For example, You would be thrown a question: Five steps of Encapsulation
1) Packets are put into logical frame.
2) User information is converted into data
3) Data is converted into segments
4) Segments are converted into datagrams and packets
5) Frames are put into bits
* 3 2 1 3 4
* 1 2 3 4 5
* 4 5 3 2 1
* 2 3 4 1 5 Answer
What kind of services are provided by presentation layer: JPGEG, MPEG, MIDI, TIFF so on What kind of services are provided by Session layer: NFS, RPC, SQL and so on.
2) Constrate on your DOD model. What is TCP, UDP and how they perform their functions.
3) Know your Cisco Commands. For example, how to enable Banners. You will see a A section of Banner's in Todd's book.
Router(Config#) banner motd #. You will be confused by
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saying that you must use this command in order to logon to the router which is wrong.
Choose the answer which hit enter and you will see a banner.
What are the three ways to modify your running-configuration file.
What are the three ways to display IPX interface e0. They are: sh ipx interface e 0, sh ipx int e0, and sh ipx interface ethernet 0.
4) Define access-list commands. You will be confused by seeing that
* Router(config-if) access-list 1 permit 172.16.20.1 0.0.0.0
You see a catch here. You define this command at Global level, not interface level.
You would define ip access-group 110 in at interface level. Keep this in mind where to define which command.
How to define a range of access list: For example, 172.16.10.0 - 172.16.40.0. what is the wild mask you will use.
Study Complex subnetting throughly. Meaning if you cross 8-bit boundry. For example: take an ip address 172.16.0.0. It is a Class-B network. You use 11-bit for subnetting. You will be asked to choose the correct range of host addresses. Todd has shown the chart which will help you a lot.
What's the default subnet mask for Class A, B and C.
On WAN: study ISDN and Frame Relay. Constrate more on ISDN. I only saw one question about Frame Relay which is (router-sub-if)# interface 0.1 point-to-point. Catch is you must define point-to-point or multipoint in order to complete the command.
ISDN: I had 4 questions. Study Reference points and Protocols.
For example E.I.Q.
E defines and existing line. I defines concept and terminology and Q defines switching. Question would be mixed. Just align them. Other questions are
ISDN provides Data only, Wrong
ISDN provides Voice only, Wrong
ISDN provides Both data and voice Correct
ISDN provides more bandwidth than fraction 56k T-1 Line. Correct
CDP: I am not sure about the command, but by default CPD update time is 60. How to change it to 90.
Test Name: Cisco Certified Network Associate
Test # 640-407
Failed this exam on my first try, There was a lot more emphasis on the networking essentials stuff than I had expected.
The course is broken down into 3 sections:
Introduction to Cisco Router configuration
Advanced Router configuration
Cisco LAN Switch Configuration
For the most part I have had a lot of experience with routers, so the command syntax questions were fairly simpl
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e for me, but definitely know all the possibilities to "copy running-config startup-config"
I was surprised to see a number of questions about loading banners onto the router's configuration and a number of questions on how to change terminal passwords, enable passwords, and enable secrets, know the difference.
There were the dreaded session layer standard questions, mpeg, jpeg, etc. I got burned on those simply because I didn't memorize them, quite a few questions on the DOD model as well as the OSI model, know them both!!
I'd guess 10 of the 70 questions were very difficult subnetting questions,
(I took 3 of those dry erase things into the booth with me and used them all!) If you don't have an excellent grasp of how many hosts, subnets, etc, forget about this test. Oh yeah, half of the questions gave subnets Cisco's way: 192.168.1.1 / 18
If you're not familiar with the 3 ways subnets can be represented as well as being able to blow through these types of questions, learn it before you waste $100.
IPX was rampant on this test know your standard and extended access lists for IPX as well as IP. I think I had 1 or 2 AppleTalk questions.
Well I'm heading back into the booth, I'll try to post again to see how different the test is this time around.
Palo Alto Bound
Subject: CCNA Exam
I took my CCNA exam last night. It was pretty straight Forward. I got 88%. I would recommend to study Todd Lammle's book thoroughly.
Brain Dump:
Concentrate on OSI and DOD modely thoroughly
Complex subnetting (if you course the 8 bit boundry for Class A and Class B)
IPX monitoring Commands. Questions could be:
>What are the three ways you could display ipx E0 interfaces:
>Question would try to confuse you. But the commands are: SHOW IPX INTERFACE ETHERNET 0, SHOW IPX INTERFACE E 0,& SHOW >IPX INT E0.
For WAN. Concentrate on ISDN, reference points and protocols. One question about FrameRelay configuration command for subinterface: INTERFACE 0.1 POINT-TO-POINT.
Know your Cisco Commands, three ways to modify configuration files, banner commands, password commands.
Know how to define and enable access-list.
They would try to confuse you by defining configuration commands on interface mode which is wrong. You configure your access-list in configuration mode and enable access-list on interface commands.
Odds and Ends I have
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found so far....
>The CCNA test is 70 questions, 68% to pass.
>Concentrate on the OSI layers and
>TCPIP addressing.
>Forget about AppleTalk.
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A couple of topics seem to be reapering in the test
1) OSI layers and where the protocols fit in.
2)tcp/ip and ipx/spx
3)configuration commands and there syntaxes
4)Access lists and there syntaxes.
5)isdn, x.25,
Any demo tests you do you would be looking to score 95-100% on and even then it's ?. I'm not looking to scare you but it wasn't easy, and if you have the cisco icrc router config study guide it helps. goodluck.
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: OSI layers.
: read the ICRC material (either take the
: course or read the ICRC book.
: Subnets
: - no AppleTalk -
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What is actually on the test?
According to Cisco you need to be able to configure and manage "simple" networks. What defines "simple" networks (according to Cisco): IP, IGRP, IPX, Serial, AppleTalk, Frame Relay, IP RIP, VLANs, IPX RIP, Ethernet, Access Lists In addition to the recommended study topics you should be very fluent with several other (not all listed) topics. A few examples of these would be: The OSI model, and Cisco Discovery Protocol. A lot of the questions deal specifically with the Cisco IOS, such as installing, logging in, navigating, backing up, and debugging.
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