<?php
echo '<html>
<head>
<title>25U Subnetting Practice</title>
</head>
<body>';
// Binary conversions
echo '<h3>Convert the following to binary:</h3>';
for ($x = 0; $x <= 3; $x++) {
echo '<p>'.rand(0,256).' ____________________</p>';
}
// Decimal conversions
echo '<h3>Convert the following to decimal:</h3>';
for ($x = 0; $x <= 3; $x++) {
echo '<p>';
for ($y = 0; $y <= 7; $y++) {
echo rand(0,1);
}
echo ' ____________________</p>';
}
// CIDRs
echo '<h3>Convert the following slash notations to decimal and binary:</h3><table style="width:100%;"><tr><th style="width:30%;">Slash</th><th style="width:30%;">Decimal</th><th style="width:30%;">Binary</th></tr>';
for ($x = 0; $x <= 3; $x++) {
echo '<tr><td style="border: 1px solid;">'.rand(16,32).'</td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td>';
}
echo '</table>';
//Subnets
echo '<h3>Identify the following for these CIDRs:</h3>';
echo '<table style="width:100%;"><tr><th style="width:150px;">IP/CIDR</th><th style="width:150px;">SM</th><th style="width:150px;">NetID</th><th style="width:150px;">Host Range</th><th style="width:150px;">Broadcast</th><th style="width:150px;">Gateway</th><th style="width:150px;">Increment</th></tr>';
for ($x = 0; $x <= 6; $x++) {
echo '<tr><td style="border: 1px solid;">'.rand(0,256).'.'.rand(0,256).'.'.rand(0,256).'.'.rand(0,256).'/'.rand(16,32).'</td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td><td style="border: 1px solid;"> </td></tr>';
}
echo '</table>';
echo '<h3>Bonus: Calculate the three subnets that follow each of the above.</h3>';
echo '</body></html>';