Wendell odom

Chapter 13 Analyzing Subnet Masks 302
“Do I Know This Already?” Quiz 302
Foundation Topics 304
Subnet Mask Conversion 304
Three Mask Formats 304
Converting Between Binary and Prefix Masks 305
Converting Between Binary and DDN Masks 306
Converting Between Prefix and DDN Masks 308
Practice Converting Subnet Masks 309
Identifying Subnet Design Choices Using Masks 309
Masks Divide the Subnet’s Addresses into Two Parts 311
Masks and Class Divide Addresses into Three Parts 312
Classless and Classful Addressing 312
Calculations Based on the IPv4 Address Format 313
Practice Analyzing Subnet Masks 315
Chapter Review 315
Chapter 14 Analyzing Existing Subnets 320
“Do I Know This Already?” Quiz 320
Foundation Topics 322
Defining a Subnet 322
An Example with Network 172.16.0.0 and Four Subnets 322
Subnet ID Concepts 324
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9780135792735_book.indb xix
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7/25/19 2:45 PM

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xx CCNA 200-301 Official Cert Guide, Volume 1
Subnet Broadcast Address 325
Range of Usable Addresses 325
Analyzing Existing Subnets: Binary 326
Finding the Subnet ID: Binary 326
Finding the Subnet Broadcast Address: Binary 327
Binary Practice Problems 328
Shortcut for the Binary Process 330
Brief Note About Boolean Math 331
Finding the Range of Addresses 331
Analyzing Existing Subnets: Decimal 331
Analysis with Easy Masks 332
Predictability in the Interesting Octet 333
Finding the Subnet ID: Difficult Masks 334
Resident Subnet Example 1 334
Resident Subnet Example 2 335
Resident Subnet Practice Problems 336
Finding the Subnet Broadcast Address: Difficult Masks 336
Subnet Broadcast Example 1 337
Subnet Broadcast Example 2 337
Subnet Broadcast Address Practice Problems 338
Practice Analyzing Existing Subnets 338
A Choice: Memorize or Calculate 338
Chapter Review 339