What type of authentication is used for remote write access in Mission Control?

The correct answer is multi-factor authentication, which enhances security by requiring two or more verification methods to gain access. This typically involves a combination of something the user knows (like a password), something the user has (such as a smartphone for a one-time code), or something the user is (biometric factors like fingerprint or facial recognition).

In the context of Mission Control, multi-factor authentication is utilized to ensure that only authorized users can perform sensitive operations, such as remote write access. This multi-layered approach reduces the chances of unauthorized access, as compromising one factor alone would not suffice to gain full access to the system.

The other options do not provide the same level of security. Single factor authentication relies solely on one method (like a password), which is much less secure. Similarly, username and password only offer basic security and are vulnerable to attacks. Token-based authentication could be a part of multi-factor systems, but on its own does not encompass the broader range of verification methods that multi-factor authentication does. Hence, multi-factor authentication is essential for maintaining the highest security standards.