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Which of the following is a public IP address?

Which of the following is a public IP address?

PrepAway - Latest Free Exam Questions & Answers

A.
172.31.254.40

B.
10.100.11.1

C.
192.168.100.1

D.
172.15.16.76

7 Comments on “Which of the following is a public IP address?

  1. Alan says:

    Can anyone explain this answer to me please?

    It seems to me that both answers A & D are Class B addresses, so why is the answer D?

    I have the exam tomorrow 15/6/12




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    1. admin says:

      Hi Alan,

      The following address ranges have been reserved for private use.
      + 10.0.0.0 to 10.255.255.255
      + 172.16.0.0 to 172.31.255.255
      + 192.168.0.0 to 192.168.255.255

      So the correct answer is D.




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  2. Alan says:

    Hi,

    I cannot see your reply even though I click on it – it takes me to the Question but I can’t see your answer!

    I have tried to join but when I enter a Username is says “The username cannot include non-alphanumeric characters.” even though I’m using an Alpha type username – can you help me please – or post the reply directly to my email address alan.mascall@sky.com

    Thank you so much!
    Alan




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