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Recap - Subnet Facts

Lesson 23 of 46 in Coddy's IP Addressing and Subnetting course.

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Challenge

Easy

Everything about one subnet. The machine 172.16.9.100/27 lives somewhere; map its whole neighborhood. Print, in this order:

  1. The network address
  2. The broadcast address
  3. The number of usable hosts
  4. The first usable host
  5. The last usable host

Expected output:

172.16.9.96
172.16.9.127
30
172.16.9.97
172.16.9.126

Try it yourself

Terminal

All lessons in IP Addressing and Subnetting

1Bits and Binary

Numbers as BitsBinary to DecimalPowers of TwoRecap - Binary Warm-up

4CIDR Notation

Goodbye ClassesReading CIDRBlock SizesRecap - CIDR Reading

7Special Addresses

Private RangesLoopbackLink-LocalZero and Broadcast

10Capstone - The Office

The Floor PlanSizing Each TeamCarving the BlockThe Router's ViewRecap - Ship the Plan

2IPv4 Anatomy

Four OctetsThe 32-Bit ViewNetwork and HostValid or NotRecap - Read an Address

5Inside a Subnet

Network AddressBroadcast AddressUsable HostsFirst and Last HostRecap - Subnet Facts

8Planning Networks

Right-SizingVLSM Step by StepAllocation OrderChecking for OverlapRecap - Plan a Network

3The Subnet Mask

What a Mask DoesMask to PrefixPrefix to MaskANDing It OutRecap - Mask Basics

6Subnetting Drills

The Block Size TrickWhich Subnet Am I InSplitting a /24Splitting AgainRecap - Subnetting Drills

9IPv6 First Steps

Why IPv6Reading IPv6Prefixes in IPv6Recap - IPv6 Basics

Practice on your own: Terminal playground