Trick to ACE IP portion
Expert Reference Series of White Papers
Simple Tricks To Ace the Subnetting Portion of Any Certification
Exam
1-800-COURSES
www.globalknowledge.com
Simple Tricks To Ace the Subnetting
Portion of Any Certification Exam
Ted Rohling, Global Knowledge Instructor, CISSP
Introduction
Subnetting seems to be a battle of fighting bits, decimal numbers, and countless methods and processes to convert from one to the other. While the methods may be confusing, the mathematics behind them is the same for all. In this paper, you will learn some of the simpler ways to figure out many of the subnetting questions that you will find on the industry certification tests.
Unlike some of the more complex methods, these methods use subtraction, addition, multiplication, and division—no converting from binary or decimal. As a matter of fact, if you can do the four basic math functions, you can learn these failure-free methods quickly and easily.
Warning: The basic assumption is that you are already familiar with subnetting and have actually learned subnetting concepts elsewhere. This white paper does not teach subnetting, it teaches useful methods for passing certification test questions.
Overview of Subnetting
The reason we subnet is to break larger IP networks into smaller ones. Often we have networks that are the same size. These use a fixed length subnet mask for all networks. Other network designs employ different subnet masks, depending on the number of addresses required for each subnet. This is called variable length subnet masking or VLSM.
As I learned subnetting, I began to realize that subnetting is much like my grandmothers kitchen. When my grandmother made pies, she cut the pies in various configurations depending on the needs of the pie eaters.
Often, the pie was cut with all pieces the same size. Other times she cut the slices in various sizes, depending on who was eating. My grandfather always got the biggest piece . . . go figure.
In
Simple Tricks To Ace the Subnetting Portion of Any Certification
Exam
1-800-COURSES
www.globalknowledge.com
Simple Tricks To Ace the Subnetting
Portion of Any Certification Exam
Ted Rohling, Global Knowledge Instructor, CISSP
Introduction
Subnetting seems to be a battle of fighting bits, decimal numbers, and countless methods and processes to convert from one to the other. While the methods may be confusing, the mathematics behind them is the same for all. In this paper, you will learn some of the simpler ways to figure out many of the subnetting questions that you will find on the industry certification tests.
Unlike some of the more complex methods, these methods use subtraction, addition, multiplication, and division—no converting from binary or decimal. As a matter of fact, if you can do the four basic math functions, you can learn these failure-free methods quickly and easily.
Warning: The basic assumption is that you are already familiar with subnetting and have actually learned subnetting concepts elsewhere. This white paper does not teach subnetting, it teaches useful methods for passing certification test questions.
Overview of Subnetting
The reason we subnet is to break larger IP networks into smaller ones. Often we have networks that are the same size. These use a fixed length subnet mask for all networks. Other network designs employ different subnet masks, depending on the number of addresses required for each subnet. This is called variable length subnet masking or VLSM.
As I learned subnetting, I began to realize that subnetting is much like my grandmothers kitchen. When my grandmother made pies, she cut the pies in various configurations depending on the needs of the pie eaters.
Often, the pie was cut with all pieces the same size. Other times she cut the slices in various sizes, depending on who was eating. My grandfather always got the biggest piece . . . go figure.
In