Which of the following encryption types would be used to protect company information when stored on a cloud server being shared by multiple companies?

Secure Socket Layer (SSL) encryption is a deprecated protocol primarily used for encrypting data in transit, not data at rest on a server.

Transport Layer Security (TLS) encryption is a successor to SSL and is used for encrypting data in transit over a network connection, not for data stored on a disk.

Whole disk encryption encrypts the entire storage device, which is not suitable for a multi-tenant cloud server where the disk is shared and different tenants require individual control over their specific data.

File and folder level encryption protects specific data at rest, making it ideal for multi-tenant environments where only certain information needs to be encrypted without affecting other tenants or shared system files. This granular approach ensures that even if the underlying disk is shared or accessed, only authorized parties with the correct keys can decrypt the targeted files and folders.