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  1. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #26
    You are absolutely right.

    The way to remember the holdtime is it is 3 times the update timer... I should have noticed something was wrong.

    I usually tripple-check all facts I write down, obviously didn't this time... my CCNA guide from Osborne says it is 30 seconds but I have 3 Cisco books and one Sybex book that say it's 60 second. I should have checked the Cisco site like I usually do. I'm sorry if I confused anyone.

    Thanks for spotting the error, I'll correct it immediately.
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    #27
    hi webmaster,

    iam new here. Recently, i downloaded some exam papers and that version is 640-607...whats the difference btw 640-801 and 640-607??
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    #28
    TechNote saying NIC is physical layer device, it is actually datalink layer device......
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    #29
    Quote Originally Posted by walaboom
    TechNote saying NIC is physical layer device, it is actually datalink layer device......

    NIC should be in Physical Layer,
    Switch is in Data Link Layer and Router is in Network Layer

    Correct me if i m wrong
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  6. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #30
    That is correct Gorden. Check out the following discussion (and there are more older posts about this in the net+ forums):
    www.techexams.net/forums/viewtopic.php?t=5456

    and this one:
    http://rejsy-morskie.com/?page=technotes/n...mponents.shtml
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    #31

    Default Question/correction

    You can prevent SMTP traffic originating from the WANs from traveling over link A by putting an outbound extended IP access list on the Serial 0 interface of RouterX. Use the following commands on RouterX:

    router(config)#access-list 105 deny TCP any host 172.16.11.253 eq SMTP
    router(config)#access-list 105 permit IP any any
    router(config)#interface serial 0
    router(config-if)#ip access-group 105 out
    Doesn't that only prevent SMTP traffic originating from the WANs from traveling over link A IF its final destination is 172.16.11.253, but allow other SMTP traffic from the WANs over link A?

    - oh, and thanks!
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  8. Senior Member
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    #32
    thank you Mentor for the tech notes.
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  9. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #33
    Quote Originally Posted by cdad2000
    thank you Mentor for the tech notes.
    You're welcome
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  10. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #34

    Default Re: Question/correction

    Quote Originally Posted by elvey
    You can prevent SMTP traffic originating from the WANs from traveling over link A by putting an outbound extended IP access list on the Serial 0 interface of RouterX. Use the following commands on RouterX:

    router(config)#access-list 105 deny TCP any host 172.16.11.253 eq SMTP
    router(config)#access-list 105 permit IP any any
    router(config)#interface serial 0
    router(config-if)#ip access-group 105 out
    Doesn't that only prevent SMTP traffic originating from the WANs from traveling over link A IF its final destination is 172.16.11.253, but allow other SMTP traffic from the WANs over link A?

    - oh, and thanks!
    You're absolutely right. I think I wrote that in with an additional SMTP server in mind (similar to a setup I've installed several times). The config above would indeed still pass SMTP traffic destined for other IPs than the router, hence "prevent SMTP traffic originating from the WANs from traveling over link A" is not what it does indeed. I hope I didn't confuse anyone. Nice catch elvey, I will correct it today.
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    #35

    Default well done dude(johan)

    Quote Originally Posted by Webmaster
    Thanks guys,

    are they enough for thr preparation
    No, first I'm not finished writing all the TechNotes for the CCNA exam yet. Second, you should never rely on a single source. You should combine other material with our TechNotes, a CCNA CBT or book for example.

    Frame-Relay can also be of interest for 607
    Yes, and we will have it in the future, it is still under construction.
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    #36

    Default vlsm & route summarization

    Webmaster.....Any chance for technotes on these subjects ?
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  13. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #37
    There are a couple of other exams I'm currently working on (70-270 and Sec+), but I do plan to continue with the CCNA TechNotes and TechLabs, including one about subnetting, vlsm and some route summarization. It is kinda 'next' on my list though, so I can't give any indication yet and it might not be before you take your exam.
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    #38
    Think you john ill' print the all I will appreciate with this
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  15. Resident Underachiever EdTheLad's Avatar
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    #39
    I dont wanna break your balls Webmaster but i saw a mistake on your standard access list section.
    You left out host before 192.168.23.11
    Nice job on all!!
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  16. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #40
    On the contrary, I appreciate you for letting me know. As every human, I make a mistake once a while, and like to hear about it asap. I'll check it out and correct it if and as needed.

    Thanks!
    Johan
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  17. Senior Member kadshah's Avatar
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    #41

    Default Excellent work

    I just went over your technotes and I will probably take a quick look at it again before I take the exam. Thanks for taking the time to organize
    all this material for us.

    kaj
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    #42

    Default Godd guide



    Hi
    I ve visited ur site today.I m working in an IT company.i realised its a usefull guide for all technical students and IT related people.I like to use the site at all free time.

    Thanks and regards,
    Dileep N Nair
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  19. Senior Member evanderburg's Avatar
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    #43
    Thanks for the technotes. They are a big help. I will be taking the CCNA exam soon and this is a good review.
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  20. Junior Member
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    #44

    Default check your grammar

    there are alot of grammatical errors. your paperwork will lose it's validity and importance with grammatical errors. for instance, ethernet is developed in 1970? is? think about it. i see it so much. people who cant tell the difference between there, their and they're, or than and then. use the word than when you are comparing, then is referring to time. spell check doesnt pickup these things. a little goes a long way. proof read your work, have even a second person read it to ensure you didnt miss anything.
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    #45
    At the end of the day, these Technotes aren't supposed to be classics; so having a typo here and another there isn't a problem especially when one person is doing all the hard work.

    The CCNA Technotes do a great job of explaining important concepts without using too much wording, hence the name Technotes.


    ...but yes, some sort of approofals for the Technotes would be nice (if possible)

    2lbs.[/b]
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    #46

    Default review of ACL notes

    This was very well done but it needs to add the fact about where it's recommended to place an ACL for standard vs. extended. This is definitely on the CCNA. Standard lists are typically placed on the port closest to the destination (farthest away from the traffic to be filtered) and extended lists are typically placed closest to the source of the traffic. This should be discussed as well as why these recommendations exist and under what cases you might not want to use these rules (since it's not a requirement just the most common usage).

    Also there's no mention of the 'implicit deny' at the end (invisible entry).

    Deb


    Quote Originally Posted by Webmaster
    Just finished a new TechNote for the CCNA exam:

    IP Access Lists

    Let me know if it isn't thorough enough
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    #47
    Jeez... Positive criticism guys... Positive criticism. People... complaining about proof reading! A little bit too harsh if you are going to critique someone's notes that he is performing/ creating for a large set of users. He can be or we can be techs... not English majors like you apparently are.

    I assume these technotes are "works-in-production" and we should be appreciating that they are at our disposal. We can always ask him to add items or recommend to add items for future releases.
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    #48
    WHAT are you talking about???!! My comments didn't say anything about any grammatical errors, but to say that he left out a MAJOR sub-topic about access lists. Since these are notes are in production as you say, and he did request comments I politely said that he should include that most important topic. Every single article about access lists mentions where to put them. Is this the kind of reply everyone gets on this list for making valid suggestions? I'd think the writer would want to be as complete as possible, or if the purpose of the tech note is to give a very brief overview (leaving out important info intentionally), then tell that to the reader up front. Many people here are beginners and wouldn't know that they're only getting a brief overview. I've written many tech notes and manuals for beginners and programmers so am not an idiot in this department.


    I'll unsubscribe now, this place isn't worth it. You all deserve each other.

    Quote Originally Posted by QUIX0TIC
    Jeez... Positive criticism guys... Positive criticism. Jdunbab... complaining about proof reading! A little bit too harsh if you are going to critique someone's notes that he is performing/ creating for a large set of users. He can be or we can be techs... not English majors like you apparently are.

    I assume these technotes are "works-in-production" and we should be appreciating that they are at our disposal. We can always ask him to add items or recommend to add items for future releases.
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  25. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #49
    debdeb... QUIX0TIC is referring to jdungan's comments.

    I'd think the writer would want to be as complete as possible, or if the purpose of the tech note is to give a very brief overview (leaving out important info intentionally), then tell that to the reader up front. Many people here are beginners and wouldn't know that they're only getting a brief overview.
    Absolutely. I'd never leave out something intentionally. The opposite actually. If you compare my early TechNotes (A+, older Net+) with some of the newer (Sec+) you can see that they are getting more detailed. I have at least four 80% finished TechNotes which I keep postponing because I run into things I feel that should be in it. Our motto is quality over quantity. I rather have a detailed Tech Note about a small number of topics, rather than a 30 page cramguide with all topics. When I started writing these TechNotes three years ago, I defined them as 'detailed summaries'. All the essential info without the fluff.

    You've made some very valid comments and I will include your suggestions in the next rewrite of those TechNotes.
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  26. Johan Hiemstra Forum Admin Webmaster's Avatar
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    #50
    Quote Originally Posted by QUIX0TIC
    I assume these technotes are "works-in-production" and we should be appreciating that they are at our disposal. We can always ask him to add items or recommend to add items for future releases.
    Thansk QUIX0TIC. As the first post in this topic says:

    These notes are to be considered beta untill I put them all together in a single PDF file. This means the order of certain topics might be changed later and additional info might be added or info might be moved to other TechNotes. Let me know if you have any comments, suggestions so I can edit/replace it before it ends up in the PDF guide.
    The whole idea of these TechNotes are that I write them, you comment, I rewrite, you comment again, I rewrite, put it in PDF, and after some time start all over. Obviously I started writing TechNotes for too many exams/certs, to finish a PDF quickly. I know I have some catching up to do with the CCNA material.

    However, that's no excuse for bad grammar and spelling errors. The excuse for that is that English is not my mother's tongue and most of the CCNA TechNotes I've written over two years ago. I like to believe my English improved a lot since, and I know the common mistakes by now (did I really confuse there, their and they're, or than and then?). Anyway, I appreciate the critics.
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