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CompTIA Network+ Study Guide: Exam N10-007

You're reading from   CompTIA Network+ Study Guide: Exam N10-007 Todd Lammle's bestselling CompTIA Network+ Study Guide for the N10-007 exam!

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Product type Paperback
Published in May 2018
Publisher Wiley
ISBN-13 9781119432258
Length 1008 pages
Edition 4th Edition
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Author (1):
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Todd Lammle Todd Lammle
Author Profile Icon Todd Lammle
Todd Lammle
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Table of Contents (27) Chapters Close

1. Introduction FREE CHAPTER 2. Chapter 1: Introduction to Networks 3. Chapter 2: The Open Systems Interconnection Specifications 4. Chapter 3: Networking Topologies, Connectors, and Wiring Standards 5. Chapter 4: The Current Ethernet Specifications 6. Chapter 5: Networking Devices 7. Chapter 6: Introduction to the Internet Protocol 8. Chapter 7: IP Addressing 9. Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT 10. Chapter 9: Introduction to IP Routing 11. Chapter 10: Routing Protocols 12. Chapter 11: Switching and Virtual LANs 13. Chapter 12: Wireless Networking 14. Chapter 13: Authentication and Access Control 15. Chapter 14: Network Threats and Mitigation 16. Chapter 15: Physical Security and Risk 17. Chapter 16: Wide Area Networks 18. Chapter 17: Troubleshooting Tools 19. Chapter 18: Software and Hardware Tools 20. Chapter 19: Network Troubleshooting 21. Chapter 20: Management, Monitoring, and Optimization 22. Index
23. Advert
24. EULA
Appendix A: Answers to Written Labs
1. Appendix B: Answers to Review Questions
2. Appendix C: Subnetting Class A

The Hierarchical IP Addressing Scheme

An IP address consists of 32 bits of information. These bits are divided into four sections, referred to as octets or bytes, and four octets sum up to 32 bits (8 × 4 = 32). You can depict an IP address using one of three methods:

  • Dotted-decimal, as in 172.16.30.56
  • Binary, as in 10101100.00010000.00011110.00111000
  • Hexadecimal, as in AC.10.1E.38

Each of these examples validly represents the same IP address. Hexadecimal is used with IPv6, and IP addressing uses dotted-decimal or binary, but you still might find an IP address stored in hexadecimal in some programs. The Windows XP Registry is a good example of a program that stores a machine’s IP address in hex.

The 32-bit IP address is known as a structured, or hierarchical, address as opposed to a flat, or nonhierarchical, address. Although either type of addressing scheme can be used, hierarchical addressing has been chosen for a very important reason. The major advantage of this scheme...

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