cidr question

thisisalex02thisisalex02 Member Posts: 136
in CCNP
well i can subnet and all that good stuff but im having a tough time understand these type of questions..

how many /21 are in a /20

or how many /23 in a /20

i seem confused.. anyone point me in the right direction
Switches are bridges on steroids!
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Comments

  • thisisalex02thisisalex02 Member Posts: 136
    BUMP


    lol
    Switches are bridges on steroids!
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  • mikej412mikej412 Member Posts: 10,086 ■■■■■■■■■■
    power of 2s

    number of bits difference

    .... you do the math icon_lol.gif
    :mike: Cisco Certifications -- Collect the Entire Set!
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  • romainromain Member Posts: 222
    Convert in binary, it will be easier...
    CCIE R&S Candidate

    Dynamips Labs
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  • steve-o87steve-o87 Member Posts: 274
    Im surprised that anyone at CCNP level cant do this... icon_eek.gificon_eek.gif
    I am the lizard King. I can do anything.
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  • thisisalex02thisisalex02 Member Posts: 136
    thats it ? ? wow that was easy
    Switches are bridges on steroids!
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  • romainromain Member Posts: 222
    steve-o87 wrote:
    Im surprised that anyone at CCNP level cant do this... icon_eek.gificon_eek.gif
    The goal is not to provide the solution everytime but to tell how to resolve...
    It's the CCNP forum and this is CCNA level question...
    CCIE R&S Candidate

    Dynamips Labs
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  • thisisalex02thisisalex02 Member Posts: 136
    funny how i never got one of those on my ccna.. yet more complex subnetting. i just didnt understand question.. this is a forum.. this is the purpose "TO INFORM".. this morning i passed COMP, but i guess im dumb
    Switches are bridges on steroids!
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  • TrailerisfTrailerisf Member Posts: 455
    Purpose of a forum is not to inform, but rather DISCUSS.
    On the road to Cisco. Will I hunt it, or will it hunt me?
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  • thisisalex02thisisalex02 Member Posts: 136
    Question has been answered


    THREAD CLOSED !
    Switches are bridges on steroids!
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  • mikej412mikej412 Member Posts: 10,086 ■■■■■■■■■■
    thisisalex02 wrote:
    THREAD CLOSED !
    You can do that? icon_lol.gif

    For the Cisco Academy Courseware, it was buried in a flash animation video on the Cisco Press Academy CCNA Companion book CDROM, so it wasn't an obvious part of the CCNA.

    Some people may have tripped over similar questions (without the slash notation) on the subnetting questions website.

    Okay -- before you permanently close the thread.... what was it? My powers of 2 comment? Or niamor's do the binary (which is always the ultimate answer)?
    :mike: Cisco Certifications -- Collect the Entire Set!
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  • romainromain Member Posts: 222
    mikej412 wrote:
    Okay -- before you permanently close the thread.... what was it? My powers of 2 comment? Or niamor's do the binary (which is always the ultimate answer)?
    Should be mine... :Dicon_cool.gif
    CCIE R&S Candidate

    Dynamips Labs
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  • mikej412mikej412 Member Posts: 10,086 ■■■■■■■■■■
    niamor wrote:
    Should be mine... :Dicon_cool.gif
    Hey -- I thought about tacking on "or you can convert to binary...." to my post.

    And I did/do concede you had the ultimate answer to any subnetting/supernetting question! icon_lol.gif

    When in doubt -- do the binary! Once you understand what is going on -- then the tips and tricks are fine.
    :mike: Cisco Certifications -- Collect the Entire Set!
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  • thisisalex02thisisalex02 Member Posts: 136
    your # bit difference and powers of two comment nailed it. I never hit that in my studies. ok time to hit up cit and bcran before the month is over. Thanks mike.. tell ur cats i said hello
    Switches are bridges on steroids!
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