what is encryption-decryption ? what do you mean by cryptography? what is the difference between a switch and a router ?

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Encryption-decryption is the process of converting plain text into a coded message and then back to plain text. Cryptography is the study of secure communication techniques.

Encryption is the process of converting plain text into a coded message using an algorithm and a key.
Decryption is the process of converting the coded message back to plain text using the same algorithm and key.
Cryptography involves techniques for secure communication, including encryption, decryption, and digital signatures.
A switch is a network device that connects multiple devices on a local area network (LAN) and forwards data packets between them.
A router is a network device that connects multiple networks and forwards data packets between them based on their IP addresses.
The main difference between a switch and a router is that a switch operates at the data link layer (layer 2) of the OSI model, while a router operates at the network layer (layer 3).

what is encryption-decryption ? what do you mean by cryptography? what is the difference between a switch and a router ?

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