Is this question wrong or am I?

borumasborumas Posts: 244Member
Hey I was doing some prep questions and believe this answer is wrong, RouterA has a Serial address of 10.1.1.1 /24 and a Fastethernet address of 172.16.1.1 /24, RouterB has a serial address of 10.1.1.2 /24 and a fast ethernet address of 192.168.1.1 /24. To use Rip routing I figured you would put network 10.0.0.0 and network 192.168.1.0 on RouterA and the addresses of network 10.0.0.0 and network 172.16.0.0 on RouterB am I wrong or is this question wrong?
ccna_question.jpg
Any help clarifying this up would be helpful, it's annoying studying and feeling that the anwers you have are right and the study guide is wrong. To me it makes sense to have each other's network addresses assigned rather than the same one in both, I would not think that RouterA could communicate with RouterB's network with the config shown as the answer.

Comments

  • GeorgeMcFly22GeorgeMcFly22 Posts: 109Member
    You are right, when you configure rip you "advertise" the networks that you are attached to. So RouterB should advertise 10.0.0.0 and 192.168.1.0
  • borumasborumas Posts: 244Member
    You are right, when you configure rip you "advertise" the networks that you are attached to. So RouterB should advertise 10.0.0.0 and 192.168.1.0
    Thanks, I guess for the sake of covering my tale I'll just put in all network routes in each router so for both devices I'll add:
    network 10.0.0.0
    network 172.16.0.0
    network 192.168.1.0

    I took the test again doing that and got it right.
  • DirtySouthDirtySouth Posts: 314Member ■□□□□□□□□□
    While I don't think it will necessarily hurt anything, I wouldn't advise you to advertise all routes on each router. Its best to just advertise the directly connected routes.
  • NightShade1NightShade1 Posts: 431Member
    That config wouldnt work i mean the one suggested by the Asnwer of cisco press because if you got this

    172.16.0.0 routerA --- 10.0.0.0
    RouterB---172.16.0.0

    that would be a dis contiguous network

    Router B when router A sent the update of 172.16.0.0 network router B will think but im already directly attached to 172.16.0.0 network and will drop the update and vice versa

    I hope that explain better why that configuration doesn't work and why yours is correct
    Product Manager - ArubaNetworks
    Alternetworks Corp
  • borumasborumas Posts: 244Member
    Thanks, yeah that explains it a bit better for me. :)
  • wintermutewintermute Posts: 11Member ■□□□□□□□□□
    Have you downloaded the latest patches?? it has fixed a LOT of errors in the test questions.. maybe they took notice of all the emails I was sending them about incorect answers in the test exams ;)

    Go to the erata section of ciscopress website put in your ISBN number, and check whether you need to download the updated exam (quite a large download) once you have done that use the check for updates in the practice exam....

    There are still errors, but there are a lot less than there was before!!! Some of the simulations on the test even if I type them exactly as they show the answer, STILL tell me I got it wrong!!! I don't like it when the answers are wrong, but one positive is that if you nut it out and decide you are really correct and they are wrong, your understanding improves :)

    Tony.
    Any intelligence I may appear to have is purely artificial.
  • borumasborumas Posts: 244Member
    thanks I did update my software but it didn't seem to fix that question, guess they overlooked that one or something.
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