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CCNA Exam Cram: Concepts in IP Addressing

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The CCNA exam(s) require a near-perfect fluency in subnetting. Success requires speed and accuracy in answering the many questions you will see on this topic. The key to this level of fluency is practice—you must work at your skills until they become second nature. The following sections discuss binary and hexadecimal numbering systems as compared with the more familiar decimal system.
This chapter is from the book

This chapter is from the book

Terms You'll Need to Understand:

  • Binary
  • Hexadecimal
  • Decimal
  • Octet
  • IP address
  • Subnet Mask
  • Subnet
  • Host
  • Increment

Techniques You'll Need to Master:

  • Identifying Address Class and Default Mask
  • Determining Host Requirements
  • Determining Subnet Requirements
  • Determining the Increment

Introduction

The CCNA exam(s) require a near-perfect fluency in subnetting. Success requires speed and accuracy in answering the many questions you will see on this topic. The key to this level of fluency is practice—you must work at your skills until they become second nature.

The following sections discuss binary and hexadecimal numbering systems as compared with the more familiar decimal system. An understanding of binary, in particular, is crucial to success on the test as it is fundamental to computer systems in general, and to topics such as subnetting, access lists, routing, and route summarization in specific.

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