Select ALL correct statements about symmetric and asymmetric cryptography.

### Why this is right\n- **Symmetric encryption uses the same shared secret key to encrypt and decrypt.** Both parties need the shared key.\n- **Advanced Encryption Standard (AES) is an example of symmetric encryption.** It efficiently protects VPN traffic.\n- **Asymmetric cryptography uses a related public key and private key.** The public key may be shared while the private key stays secret.\n\n### The concept\nSymmetric encryption is efficient for protecting large amounts of traffic once both sides share a key. Asymmetric cryptography uses a key pair and can support authentication or key-related tasks. The two methods have different key arrangements and should not be confused.\n\n### The other options\n- **A public key must always be kept secret while the private key is shared.** This reverses the key roles.\n\n### Terms\n- **AES**: Advanced Encryption Standard, a symmetric encryption method.\n\n### Remember\nSymmetric means shared secret; asymmetric means a public and private key pair.