17 thoughts on “CompTIA Network+ N10-004: 1.1 – Common Networking Protocols”

  1. Great video!
    I wonder if its wrong to say that ARP is a network layer protocol too?
    Cause ARP is using both IP adresses(Network layer) and MAC adresses (Link layer). Right?

    1. Rickard –

      Although ARP operates at Layer 2, it’s completely appropriate to consider the Layer 3 aspects of the protocol.

      The OSI model isn’t a static set of rules, and there are plenty of places where protocols and technologies can span many different OSI layers.

  2. Dear Professor James,
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  3. I have finished A+ now and now I am working on Network+. The review section at the back has changed for the better. In nearly all A+ videos I skipped the review. That was a major improvement of time.

    Thanks again,
    M. Jared Carson

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  5. I passed my A+ recently with a lot of help from Professor Messer. After watching the first segment of the Network+ video it is apparent that nothing will be missing throughout his lessons. Thanks Professor Messer.

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