VXLAN (Virtual Extensible LAN) encapsulates Ethernet frames inside UDP packets, increasing packet size. This can lead to fragmentation and performance degradation unless Jumbo Frames are enabled. Breakdown of Options: A: 802.1Q tagging - VLAN tagging enables segmentation but does not address fragmentation issues. B: Spanning tree - STP prevents loops but does not improve performance for VXLAN traffic. C: Link aggregation - LACP combines links for higher bandwidth but does not prevent fragmentation. D: Jumbo frames - Correct answer. Enabling Jumbo Frames allows larger packet sizes, reducing fragmentation and improving VXLAN performance. Reference: CompTIA Network+ (N10-009) Official Study Guide - Domain 2.3: Explain network performance concepts. RFC 7348: VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks