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  1. Junior Member
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    #1

    Default Devices on OSI layer

    Hey all,

    I am preparing for my network exams which will be in two weeks. So far I an finding some serious tutorial inconsistencies with two devices and where they operate on the OSI layers.

    NICS and WAPs

    Based on which tutorial / practice exam material you have, you will get it to say that they operate on both Data link and Physical layers ( Prep logic).

    Others will say on the Physical layer.

    As far as COMPTIA is concerned, which one is correct?
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  3. One Man Wolfpac NetAdmin2436's Avatar
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    #2
    Should be both. A NIC physically transmits signals over the line. A NIC also has a MAC address which is layer 2.

    http://en.wikipedia.org/wiki/Network_card

    I wouldn't worry too much. I doubt you will get a tricky question regarding them.
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  4. Member
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    #3
    Ya I'm re-sitting my N+ in two weeks, lots of practice exams I have been doing are giving different answers, if the question comes up for WAP'S I'm going with layer1 same for NIC unless they mention MAC!
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  5. Senior Member
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    #4
    I wouldn't go with layer 1 for WAPs or NICs. NetAdmin explained why for NICs, and layer 2 is critical for WAPs (i.e. how to handle and respond to collisions). Layer 1 devices are things like hubs and repeaters that blindly transmit electrical signals.
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  6. Senior Member
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    #5
    Do not forget that cables are layer 1
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  7. Senior Member
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    #6
    I must admit, I never had a question like that, I would go physical rather than both though.
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  8. Cosmonaut human151's Avatar
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    #7
    Both devices are layer two.

    As far a NICs, you need to remember the data link layer is divided into two sublayers, MAC & LLC. The LLC talks to layer 3, and wraps a frame around the packet and passes it to the MAC, which puts the frame on the cables as bits.

    neither is a layer 1 device, but the MAC sublayer does interact with layer 1.
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  9. Cosmonaut human151's Avatar
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    #8
    also remember that waps as well as nics are layer two because they forward frames by ethernet address (MAC Address)

    a layer 1 device would be repeater.
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  10. Senior Member Nobylspoon's Avatar
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    #9
    My textbook came with an OSI model reference card that shows WAP in layer 2 and NICs in both layer 1 & 2.
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  11. Member
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    #10
    I agree with Human151
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  12. Senior Member
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    #11
    theyre both layer 1 & 2
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