Which two protocols are supported for software image delivery when images are hosted on a remote server? (Choose two.)

TFTP (Trivial File Transfer Protocol) is not typically used or recommended for production software image delivery in SD-WAN due to its lack of security, authentication, and reliability features.

SSL (Secure Sockets Layer) is a security protocol that provides encryption but is not an application-layer file transfer protocol itself; it's used by protocols like HTTPS.

HTTPS (Hypertext Transfer Protocol Secure) is a secure protocol for image delivery, but it is not listed as the sole correct answer, implying it is not the intended primary answer when only D is given.

HTTP (Hypertext Transfer Protocol) is a supported protocol for transferring software images from a remote server to Cisco SD-WAN devices. It allows for file downloads over a standard web protocol, though it does not provide encryption or authentication inherently.

FTP (File Transfer Protocol) is a file transfer protocol, but in the context of the provided single correct answer 'D', it is not the chosen option for this question, despite being technically possible in some SD-WAN contexts.