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100-105 Part 4: IPv4 Addressing

Convert Masks, Drill 1

Convert Masks, Drill 1

🕔07:40, 16.May 2012 It’s practice, man, practice. Are we really talking about practice? Sure. Plain and simple, just some extra practice converting from one mask format to another. But how fast can you go? And can you reach your time goal every time, Read Full Article
Mask Conversion: Quick Draw McGraw or Quick Claude?

Mask Conversion: Quick Draw McGraw or Quick Claude?

🕔09:45, 14.May 2012 You pass by a cubicle, and see /26 written on a marker board. Later, you see a config with 255.255.224.0. One other time, you see this binary number: 11111111 11111111 11111111 11111000. How quickly do you: Recognize these numbers as Read Full Article
Mask Design Drill 2: Answers

Mask Design Drill 2: Answers

🕔07:00, 24.Apr 2012 Today’s post just lists the answers to the Mask Design drill #2. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: Pick the one mask Read Full Article
Mask Design Drill 2

Mask Design Drill 2

🕔07:00, 20.Apr 2012 Here’s another mask design drill, with the same idea as the previous two posts (chronologically speaking). For those of you with my ICND1 book, Chapter 16 spells out the details, and you can just use this as more practice. The Read Full Article
Mask Design Drill 1: Answers

Mask Design Drill 1: Answers

🕔09:30, 17.Apr 2012 Today’s post just lists the answers to the Mask Design drill #1. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: Pick the one mask Read Full Article
Mask Design Drill 1

Mask Design Drill 1

🕔10:25, 13.Apr 2012 Today’s post changes gears, at least for those of you who read regularly when the posts show up. The last few weeks, I’ve focused more on broader prep issues, and today, we’ll get back to something narrow but important: designing Read Full Article
Answers: How Many Hosts/Subnets Speed Practice 3

Answers: How Many Hosts/Subnets Speed Practice 3

🕔08:00, 2.Mar 2012 Today’s post answers the five questions in a previously posted exercise. What’s it about? Someone came before us at most every company and made up an IP addressing plan. These exams test our ability to look at that plan and Read Full Article
How Many Hosts/Subnets Speed Practice 3

How Many Hosts/Subnets Speed Practice 3

🕔10:59, 28.Feb 2012 Someone came before us at most every company and made up an IP addressing plan. These exams test our ability to look at that plan and decipher what the plan does, including answering this question: “How many subnets does this Read Full Article
Answers: How Many Subnets/Hosts 2

Answers: How Many Subnets/Hosts 2

🕔09:00, 27.Jun 2011 The answers for the most recent subnetting speed practice, for “find the number of subnets and hosts question 2” are below the fold – FYI. Ask questions as needed. The figure shows the big concept to find the number of Read Full Article
How Many Subnets/Hosts Speed Practice 2

How Many Subnets/Hosts Speed Practice 2

🕔11:59, 24.Jun 2011 It's Friday, and time for some subnetting practice. Today we'll do another round on figuring out the number of subnets in a network, and the number of hosts per subnet. Suggestions BEFORE CLICKING to see the rest: be ready to Read Full Article

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