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TCP/IP Protocol Suite 1 Chapter  4 Chapter  4 Objectives Upon completion you will be able to: IP Addresses: IP Addresses: Classful Addressing Classful Addressing Understand IPv4 addresses and classes Identify the class of an IP address Find the network address given an IP address Understand masks and how to use them Understand subnets and supernets

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TCP/IP Protocol Suite 3 An IP address is a 32-bit address. Note: Note:

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TCP/IP Protocol Suite 4 The IP addresses are unique. Note: Note:
TCP/IP Protocol Suite 5 The address space of IPv4 is 2 32 or 4,294,967,296. Note: Note:

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TCP/IP Protocol Suite 6 Figure 4.1 Dotted-decimal notation
TCP/IP Protocol Suite 7 The binary, decimal, and hexadecimal number systems are reviewed in Appendix B. Note: Note:

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TCP/IP Protocol Suite 8 Change the following IP addresses from binary notation to dotted-decimal notation. a. 10000001 00001011 00001011 11101111 b . 11000001 10000011 00011011 11111111 c. 11100111 11011011 10001011 01101111 d. 11111001 10011011 11111011 00001111 Example  1 Solution We replace each group of 8 bits with its equivalent decimal number (see Appendix B) and add dots for separation: a. 129.11.11.239 b. 193.131.27.255 c. 231.219.139.111 d. 249.155.251.15
TCP/IP Protocol Suite 9 Change the following IP addresses from dotted-decimal notation to binary notation. a. 111.56.45.78 b. 221.34.7.82 c. 241.8.56.12 d. 75.45.34.78 Example  2 Solution We replace each decimal number with its binary equivalent: a. 01101111 00111000 00101101 01001110 b. 11011101 00100010 00000111 01010010 c. 11110001 00001000 00111000 00001100 d. 01001011 00101101 00100010 01001110

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TCP/IP Protocol Suite 10 Find the error, if any, in the following IP addresses: a. 111.56.045.78 b. 221.34.7.8.20 c. 75.45.301.14 d. 11100010.23.14.67 Example  3 Solution a. There are no leading zeroes in dotted-decimal notation (045). b. We may not have more than four numbers in an IP address. c. In dotted-decimal notation, each number is less than or equal to 255; 301 is outside this range.
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