1 files changed, 101 insertions, 0 deletions
diff --git a/backup/temp_version_backup/chapter12.ipynb b/backup/temp_version_backup/chapter12.ipynb
new file mode 100755
index 00000000..ae98ce2e
--- /dev/null
+++ b/backup/temp_version_backup/chapter12.ipynb
@@ -0,0 +1,101 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:70c87938501c80a4a95b89850ad3f0f2a57b63c9811bc118f804b4d657133c5f"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 12 Introduction to Networking and local area networks"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 12.1 Page no 448"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given\n",
+      "N = 20\n",
+      "\n",
+      "#Calculation\n",
+      "L = (N*(N-1))/2.0\n",
+      "\n",
+      "#Result\n",
+      "print\"The number of interconnecting wires required are \",L\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The number of interconnecting wires required are  190.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 12.2 Page no 474"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given\n",
+      "block = 1500\n",
+      "ethernet = 10.0*10**6\n",
+      "token_ring = 16.0*10**6\n",
+      "\n",
+      "#Calculation\n",
+      "t1_bit = 1/ethernet\n",
+      "t1_byte = 8*t1_bit\n",
+      "t1_1526 = 1526 *t1_byte\n",
+      "t2_bit = 1/token_ring\n",
+      "t2_byte = 8 * t2_bit\n",
+      "t2_1521 =1521*t2_byte\n",
+      "\n",
+      "#Result\n",
+      "print\"(a) Time required for 1526 bytes is \",t1_1526*10**6,\"ns\"\n",
+      "print\"(b) Time required for 1521 bytes is \",t2_1521*10**3,\"ms\"\n",
+      "\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "(a) Time required for 1526 bytes is  1220.8 ns\n",
+        "(b) Time required for 1521 bytes is  0.7605 ms\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file