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  • #3937981

    Class B Subnetting Help

    by matthewksimmons ·

    I’m taking a Network + class to get my cert, and I had trouble with Class B subnetting. It’s a whole worksheet, and I’m hoping I can get it all to fit here. I think that I understand what’s going on, but I would like to be sure that what I’m doing is right.
    this is my filled out worksheet:

    What is the default Class B mask? 255.255.0.0

    What is the subnet mask with 19 bits? 255.255.224.0

    How many possible subnets? 8

    How many usable hosts on each subnet? 8,190

    What is the network address of subnet #5(Starting with Subnet #0 as the zero subnet)? 152.3.160.0

    What is the broadcast address of subnet #5? 152.3.1**.255

    What is the range of available host addresses for subnet #5? 152.3.160.1 – 152.3.1**.254

    What is the network address of subnet #7? 152.3.224.0

    What is the broadcast address of subnet #7? 152.3.255.255

    What is the range of available host addresses for subnet #7? 152.3.224.1 – 152.3.255.254

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    • #3938780

      For such work.

      by rproffitt ·

      In reply to Class B Subnetting Help

      I turn to subnet calculators. I haven’t found the need to do this manually for decades.

      But let’s say you want tutorials. Google “IP Subnet Tutorials”.

    • #3938575

      Response

      by gamer 3000 ·

      In reply to Class B Subnetting Help

      Class B 152.3.0.0 / 19
      Borrow 3 bits

      What is the default Class B mask? 255.255.0.0

      What is the subnet mask with 19 bits? 255.255.224.0

      How many possible subnets? 8

      How many usable hosts on each subnet? 8190

      What is the network address of subnet #5(Starting with Subnet #0 as the zero subnet)? 152.3.128.0

      What is the broadcast address of subnet #5? 152.3.159.255

      What is the range of available host addresses for subnet #5? 152.3.128.1 – 152.3.159.254

      What is the network address of subnet #7? 152.3.192.0

      What is the broadcast address of subnet #7? 152.3.223.255

      What is the range of available host addresses for subnet #7? 152.3.192.1– 152.3.223.254

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