CompTIA A+ 220-701: 4.1 – Protocols and Addresses

| April 18, 2010 | 3 Comments


The fundamental languages used over our computer networks are a standard set of protocols that are used around the world. In this video, you’ll learn about protocols and the set of standards associated with TCP/IP. You’ll also learn the essentials of TCP/IP and how subnetting can be used to build today’s modern networks.



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Category: CompTIA A+ 220-701

  • Jonas

    Hello Prof. Messer:nI notice you put class A: 1-126 nbut various other document like Wikipedia show that class A is : 1 – 127u00a0 instead of 126…. what is your take on this difference?

    • Here’s why:nnhttp://www.professormesser.com/free-a-plus-training/a-plus-pop-quizzes/the-back-of-the-class/

      • jonas

        I do appreciate your the facts that you presented on this !!! Many thanks for the answer.

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