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  How to Hack WiFi Password: Guide to Crack Wi-Fi Network Wireless networks are accessible to anyone within the router’s transmission radius.  This makes them vulnerable to attacks. Hotspots are available in public places such as airports, restaurants, parks, etc. In this tutorial, we will introduce you to common techniques used to  exploit weaknesses in wireless network security implementations . We will also look at some of the countermeasures you can put in place to protect against such attacks.      What is a wireless network? A wireless network is a network that uses radio waves to link computers and other devices together. The implementation is done at the Layer 1 (physical layer) of the OSI model. How to access a wireless network? You will need a wireless network enabled device such as a laptop, tablet, smartphones, etc. You will also need to be within the transmission radius of a wireless network access point. Most devices (if the wireless network option is turned on) will prov
  Calculator program using Python     Create a simple calculator which can perform basic arithmetic operations like addition, subtraction, multiplication, or division depending upon the user input. Approach : User chooses the desired operation. Options 1, 2, 3, and 4 are valid. Two numbers are taken and an if…elif…else branching is used to execute a particular section. Using functions add(), subtract(), multiply() and divide() evaluate respective operations. Please select operation - 1. Add 2. Subtract 3. Multiply 4. Divide Select operations form 1, 2, 3, 4 : 1 Enter first number : 20 Enter second number : 13 20 + 13 = 33 Python # Python program for simple calculator   # Function to add two numbers def add(num1, num2):      return num1 + num2   # Function to subtract two numbers def subtract(num1, num2):      return num1 - num2   # Function to multiply two numbers def multiply(num1, num2):      return num1 * num2   # Function to divide two numbers def divide(num1, num2):