Which of the following is the BEST method to protect data in transit?

AES encryption is a strong symmetric encryption algorithm, but it is a method of encryption, not a level or type of protection that defines where it's applied.

Network-level encryption protects data as it travels across a network by encrypting the entire communication channel, making the data unreadable to unauthorized interceptors during transmission. Technologies like VPNs or TLS/SSL operate at this level, ensuring secure data in transit.

Disk-level encryption protects data at rest on a storage device, meaning the data is encrypted when stored on a hard drive, not while it is actively being transmitted.

Column-level encryption is a method of encrypting specific data columns within a database, protecting data at rest within that database, not data actively moving across a network.