The correct answer is Internet.Internet: The Internet is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. Additional InformationPrivate key encryption: Private key encryption is the form of encryption where only a single private key can encrypt and decrypt information. It is a fast process since it uses a single key. However, protecting one key creates a key management issue when everyone is using private keys. Public key encryption: Public key encryption, or public key cryptography, is a method of encrypting data with two different keys and making one of the keys, the public key, available for anyone to use. The other key is known as the private key. Data encrypted with the public key can only be decrypted with the private key, and data encrypted with the private key can only be decrypted with the public key. Password: A password, sometimes called a passcode is secret data, typically a string of characters, usually used to confirm a user's identity Traditionally, passwords were expected to be memorized, but the large number of password-protected services that a typical individual accesses can make memorization of unique passwords for each service impractical.