Increasing the MTU (Maximum Transmission Unit) size allows larger frames to be transmitted, reducing overhead and improving throughput - especially for large file transfers like backups.
A). QoS prioritizes traffic but doesn't reduce backup times directly.
B). SDN is a network management model, not a parameter change.
D). VXLAN encapsulates VLANs, not relevant to backup speeds.
E). TTL is for packet lifetime, not throughput.
References (CompTIA Network+ N10-009):
Domain: Network Infrastructure - MTU, jumbo frames, performance tuning.