Which of the following statements accurately describes VLANs?
Which of the following statements accurately describes VLANs?
A VLAN, or Virtual Local Area Network, allows for a network to be logically segmented regardless of physical location. This means that VLANs are not confined to the same racks or even the same data center. They can be configured to span across different networks within an organization, including multiple data centers, making option A the correct answer.
A is correct, even though it is a shitty practice and I would say B is highly preferable.
Plenty of people use layer 2 vlans across datacentres in a stretched storage and/or hypervisor cluster active/active mode. it's a high availability strategy (as opposed to DR)
Looks like Answer is correct. VLAN could be from different datacenter as well.
Correct answer is B. You cannot stretch a VLAN over WAN, the moment you do, you're using other technologies such as PW, vXLAN, etc. to transport your Layer2 vlan....but VLANs by themselves ca only span within a datacentre or campus.
VLANs, or Virtual Local Area Networks, are a way of segmenting a physical network into logical sub-networks. VLANs are typically used to isolate different groups of devices or applications on a network, such as to provide security or performance benefits. VLANs are not restricted to the same data center or the same racks, meaning that they can span multiple data centers or racks within a network. Instead, VLANs are typically defined based on logical criteria, such as the type of device or application being used, or the VLAN ID assigned to the device or application.
Given answer is incorrect. Correct Answer is B. VLANs are always restricted to the same data center. It can be spread across to multiple racks in the same datacenter. For example when a packet wants to leave a datacenter it has to use a WAN connection. And VLAN name itself Virual local area network. It cannot travel through WAN.
actually you could span Layer 2 across 2 data centers... you shouldn't but you could ;)
A stretched VLAN is a VLAN that spans multiple physical data centers. https://download3.vmware.com/vcat/vmw-vcloud-architecture-toolkit-spv1-webworks/Hybridity/Architecting%20a%20Hybrid%20Mobility%20Strategy/Architecting%20a%20Hybrid%20Mobility%20Strategy.2.14.html#:~:text=A%20stretched%20VLAN%20is%20a,complex%20considerations%20from%20the%20environment.
A. They are not restricted to the same data center or the same racks.
Looks like the answer is A but in the real world we typically don't extend VLANs across Datacenters. In a cloud environment two Datacenters are "well Connected" so extending VLANs works.
ANS A. A. They are not restricted to the same data center or the same racks. But the verbiage in Statement for Correct answer contradicts answer A.
I think this is purely wrong or poor verbiage for the questions itself. VLANs can span DCs in general ,but a single VLAN wont! The technology that is used to do that is actually VxLAN!
Virtual Local Area Networks (VLANs) are designed to segment network traffic logically, independent of physical location. This means that devices assigned to the same VLAN can communicate as if they are on the same physical network, regardless of their actual physical placement. Key Points: VLAN Flexibility: VLANs can span across multiple switches, racks, and even data centers, allowing for flexible network design and efficient resource utilization. CISCO.COM Layer 2 Adjacency: In data centers, it's common to extend VLANs across various switches to meet application requirements that need Layer 2 adjacency, such as high availability clusters.