Answer:
In this example you will learn to create a simple calculator that can add, subtract, multiply or divide depending upon the input from the user.
Explanation:
That is encryption. Encrypted files usually have a password assigned. In order to decrypt the file, you need to have the password.
Answer:
hotspots.
Explanation:
Hotspots is a small geographical location with at least one access point in an outdoor/indoor setting, that provide people with maximum wireless coverage within that area and its mostly uses a wireless local-area network (WLAN) using a router to connect to an Internet service provider.
