Which of the following enrollment methods are not considered secure when deploying Android Enterprise devices?

SMS Enrollment Code is not considered secure because it transmits sensitive enrollment information, potentially including credentials or configuration details, over an unencrypted channel. This makes the data vulnerable to interception and compromise. QR Code, NFC bump, and Zero Touch are all considered secure enrollment methods. QR codes and NFC bumps typically encrypt the enrollment payload or rely on a secure connection initiated by the device. Zero Touch enrollment is inherently secure as devices are pre-provisioned with enrollment details directly from the reseller, ensuring a trusted and encrypted setup process without user intervention.