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You are here: Home / CompTIA / Network+ / Section I: Networking Concepts / Chapter 3: IP Addressing / Summary

Summary

IPv4 addressing has the following characteristics:

  • IPv4 addresses are 32 bits in length.
  • IPv4 addresses are divided into various classes (e.g., Class A networks accommodate more than 16 million unique IP addresses, Class B networks support more than 65,000 IP addresses, and Class C networks permit 254 usable IP addresses). Originally, organizations applied for an entire network in one of these classes. Today, however, subnetting allows a service provider to give a customer just a portion of a network address space, in an attempt to conserve the depleting pool of IP addresses. Conversely, service . . .

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