Networks use various forms of encryption like file, data, and link encryption to securely transmit information. File encryption protects central server and storage files by requiring an encryption key to read or modify them. Data encryption uses a pseudorandom key to scramble real data within transmitted network packets, obscuring it from unauthorized access. Additionally, link encryption can be applied between routers to fully encrypt entire data streams across the network.

1. How Encryption For Strong Security Works 1.Networks use data encryption, file encryption, and link encryption for strong security. File encryption protects files in central servers and mass storage devices from being read or changed without an encryption key.

2. How Encryption For Strong Security Works 2.An encryption program, usually in firmware, uses a string of numbers called a key to create a stream of data combining the real information with a pseudorandom stream of bits. The real data is buried i the pseudorandom “noise” . This is calld data encryption.

3. How Encryption For Strong Security Works 3.The PC's encrypted data, enclosed in unencrypted TCP/IP and Ethernet packets, crosses the network. Additionally, routers can use encryption between themselves to protect the entire stream of data. This is called link encryption.

4. How Encryption For Strong Security Works 4.Local file encryption protects data from physical intrusion.

5. How Encryption For Strong Security Works 5.VPN client software creates an encrypted tunnel to the firewall/VPN server.

6. How Encryption For Strong Security Works 6.A VPN is a form of link encryption often used across a private network of the Internet.