Selected Answer: D It can't be A since it uses a L3 underlay, not a L2 underlay.

Selected Answer: D VXLAN provides the following benefits: VLAN flexibility in multitenant segments - D Higher scalability Improved network utilization https://www.ciscopress.com/articles/article.asp?p=2999385&seqNum=3

Selected Answer: D A - VXLAN extends Layer 2 networks over a Layer 3 underlay. B- VXLAN has an 8-byte header. C - VXLAN uses UDP (User Datagram Protocol) for transport. D - VXLAN is meant to support multi-tenancy by isolating traffic between different tenants in a virtualized data center environment. It allows for the creation of multiple virtualized network segments, each identified by a VXLAN Network Identifier (VNI).

It extends L2 across L3.

You've mistyped the answer shown, which is: "A. It extends Layer 2 and Layer 3 overlay networks over a **Layer 2** underlay" The underlay, as you pointed out, should be Layer 3, so A is incorrect. Leaving D as the correct answer.

Selected Answer: D A is incorrect bcoz VXLAN extends Layer 2 and Layer 3 overlay networks over a Layer 3 underlay, not a Layer 2 underlay. VXLAN encapsulates Layer 2 frames inside UDP packets, which lets them be carried over a Layer 3 network.

Shouldn't it be A?

Selected Answer: A A. **It extends Layer 2 and Layer 3 overlay networks over a Layer 3 underlay.** VXLAN is a network virtualization technology that enables the creation of Layer 2 and Layer 3 overlay networks on top of a Layer 3 (IP) underlay network. VXLAN is commonly used in virtualized and cloud environments to provide network segmentation and isolation. It lets you extend Layer 2 domains across Layer 3 networks. The other options are not accurate: B. VXLAN typically has a 50-byte packet header. C. VXLAN uses UDP (User Datagram Protocol) for transport, not TCP. D. VXLAN is often used in multi-tenant environments, but the term "multi-tenant solution" is a bit broad. VXLAN itself is a technology that enables network virtualization and segmentation, which can be used in multi-tenant scenarios.

Selected Answer: A D is the correct answer. D is wrong: 'A VXLAN is a virtual layer 2 network (known as the overlay network) built on top of an existing physical layer 3 network (known as the underlay network). VXLAN uses a logical tunnel to transport traffic between two endpoints.'

Whoops! D is the correct answer. A is wrong: 'A VXLAN is a virtual layer 2 network (known as the overlay network) built on top of an existing physical layer 3 network (known as the underlay network). VXLAN uses a logical tunnel to transport traffic between two endpoints.' 'Built on top of an existing physical layer 3 network' is the main point.

Selected Answer: D 'D' 'A' doesn't make sense. L2 underlay?

Selected Answer: D The correct characteristic of VXLAN is: D. It is a multi-tenant solution. Explanation: VXLAN (Virtual Extensible LAN) is built to provide network virtualization and extend Layer 2 networks across Layer 3 underlays, allowing isolated Layer 2 segments and making it well-suited for multi-tenant environments like data centers. Why the other options are incorrect: A: VXLAN extends Layer 2 networks over a Layer 3 underlay network, not a Layer 2 underlay. B: VXLAN uses a 8-byte header, not a 12-byte one. C: VXLAN uses UDP (not TCP) as its transport protocol, specifically over port 4789.

Selected Answer: D Correct answer is D, because all the others are just wrong, it's not over Layer 2, it's not 12 bit, and transport is UDP or TCP.