A technician uses a method where each server is configured with a public/private encryption key pair and identified by a host key fingerprint. What is this method?

The correct answer is B. SSH.

SSH, or Secure Shell, is a protocol that uses public/private encryption key pairs for secure communication over a network. Each server is identified by a host key fingerprint, which helps ensure the integrity and authenticity of the server the client is connecting to. This method is widely used for secure remote administration of systems.