Analyzing IP Networks Exercise 1

 In 200-301 V1 Ch12: Classful IPv4 Networks, 200-301 V1 Part 4: IPv4 Addressing, CCENT-OLD, IPv4 Ch. 12 Network Analysis

This is the My Dear Aunt Sally (Multiplcation/Division/Addition/Subtraction) of the IP addressing and subnetting world. Nothing snazzy, just some extra exercises, and place to ask questions. Today’s post lists sample problems, the follow-up post will show the answers.

Related links:

Five Problem Statements

Each problem starts with a Dotted Decimal Notation (DDN) number. Your job:

  • Determine the class (A, B, C, D, E, or none)
  • If A, B, or C:
    1. Find the Network ID
    2. Find the Network Broadcast Address
    3. Find the numerically lowest and highest IP addresses that can be used by hosts in the network

Table 1 lists the five problems.

Table 1: Five Problems for Today’s Post

  DDN Value Class
1 100.100.100.100
2 200.200.200.200
3 300.300.300.300
4 128.128.128.128
5 191.191.191.191
Analyzing Classful Networks and My Dear Aunt Sally
Analyzing IP Networks – Answers, Exercise 1
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Jeff Palin

Hello Wendell. I noticed that you did not overtly specify that we were to use the “basic-defaults” of subnet masks for each network-class (or did I miss something). But I did so, and got everything correct.
But it was much too easy if you really wanted to test our grasp of the information.

Josh Desens

300.300.300.300 is an invalid IPv4 address.

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