An engineer implements a configuration backup on the Cisco APIC. The backup job must meet these requirements: - The backup must transfer the encrypted data to the remote server. - The transfer must be

TFTP (Trivial File Transfer Protocol) does not provide encryption for data transfers and lacks features for resuming interrupted transfers, failing both requirements.

FTP (File Transfer Protocol) transfers data in cleartext by default, failing the encryption requirement, and does not inherently support resuming interrupted transfers.

SFTP (SSH File Transfer Protocol) provides robust encryption for data in transit, ensuring the backup data is transferred securely. Additionally, SFTP supports the ability to resume interrupted file transfers, which is crucial for reliability over potentially unstable connections.

HTTP (Hypertext Transfer Protocol) is primarily designed for web content and does not inherently offer the encryption and resume capabilities suitable for secure and reliable configuration backups.