When verifying file integrity on a remote system that is bandwidth limited, which of the following tool combinations provides the STRONGEST confidence?

3DES is an encryption cipher, not a hashing algorithm, and combining MD5 with an encryption cipher does not provide file integrity verification - it introduces unnecessary complexity.

On a bandwidth-limited link, using two separate hash algorithms (MD5 and SHA-1) to verify a file provides corroborating integrity checks - an attacker or error would need to simultaneously defeat both hashes to go undetected. Both algorithms produce compact digests that consume negligible bandwidth, making this combination practical for constrained environments while improving confidence over using a single hash.

While SHA-256 and RSA together provide strong integrity and authentication, RSA asymmetric operations add significant computational and bandwidth overhead unsuitable for a bandwidth-limited remote link.

AES is a symmetric encryption algorithm, not a hashing function, so combining SHA-256 with AES does not provide meaningful file integrity verification in the context described.