Which technology does VXLAN use to provide segmentation for Layer 2 and Layer 3 traffic?
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A. B. C. D.C.
VXLAN (Virtual Extensible LAN) is a network overlay technology that provides Layer 2 and Layer 3 segmentation over an existing Layer 3 infrastructure. It uses a technique called tunneling to encapsulate Layer 2 and Layer 3 traffic within Layer 4 UDP packets, which are then transported across an IP network.
To provide segmentation for Layer 2 and Layer 3 traffic, VXLAN uses a unique identifier called a Virtual Network Identifier (VNI). A VNI is a 24-bit identifier that is added to the VXLAN header, and it allows VXLAN to create multiple virtual Layer 2 networks (called VXLAN segments) over the same physical network infrastructure. Each VXLAN segment is identified by a unique VNI.
When a host sends traffic to another host in the same VXLAN segment, the traffic is encapsulated with the VNI and sent across the physical network infrastructure to the destination host. When the traffic reaches the destination host, the VNI is used to decapsulate the traffic and forward it to the appropriate destination.
Therefore, the correct answer to the question is C. VNI, since VXLAN uses Virtual Network Identifiers to provide segmentation for Layer 2 and Layer 3 traffic. Answers A (bridge domain), B (VLAN), and D (VRF) are all technologies that can also provide segmentation, but they are not directly related to VXLAN. Bridge domains and VLANs are technologies used in traditional Layer 2 networks, while VRF is a technology used to provide Layer 3 segmentation in a multi-tenant environment.