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CCNA Certification All-In-One For Dummies by Silviu Angelescu

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Chapter 5: Binary, Hexadecimal, and Decimal Numbering Systems

Exam Objectives

Understanding decimal, hexadecimal, and binary numbering systems

Converting numbers between the decimal, hexadecimal, and binary numbering systems

Memorizing the major powers of 2 and understanding their relationship to corresponding binary numbers

Differentiating between the bit, byte, and nibble

Read this chapter to find out about the binary, hexadecimal, and decimal numbering systems. The chapter covers the following topics:

How numbers are built based on a certain power base

How to convert numbers from one numbering system to another

Major powers of base 2 and their relationship to memory and disk size

Standard numbering systems notation

The first 15 numbers in the binary, hexadecimal, and decimal systems

The relationship between the hexadecimal and binary numbering systems and bits, bytes, and nibbles

It is important to read this chapter if you are not familiar with the binary, hexadecimal, and decimal numbering systems. You need to understand numbering systems and know how to convert numbers between the various systems. Don’t worry if you are not familiar with these concepts yet. They sound much more complicated than they really are. Understanding numbering systems helps you not only when dealing with networks but also when dealing with other computer components and systems.

Several networking features and protocols rely on binary and hexadecimal numbers to code bit maps, subnet masks, ...

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