Company XYZ wants design recommendations for Layer 2 redundancy (using Layer 2 technologies). The company wants to prioritize flexibility and scalability elements in the new design. Which two technologies help meet these requirements? (Choose two.)
A.
Configure DHCP snooping on the switches
B.
Use switch clustering at the distribution layer where possible
It asks for L2 technologies - 'D' is not a technology it is just a good idea, 'A' is irrelevant, 'B' makes sense such as VSS or Stackwise Virtual technology (L2), 'C' has nothing to do with scalability/flexibility whereas 'E' does.
B. Use switch clustering at the distribution layer where possible - Correct
D. Avoid stretching VLANs across switches - Correct
Explanation:
B. Switch clustering: This provides a scalable and flexible approach by allowing multiple physical switches to act as a single logical switch. It simplifies management and redundancy, enhancing scalability and flexibility at the distribution layer, as the system can grow without significant changes to the architecture.
D. Avoid stretching VLANs across switches: Stretched VLANs across multiple switches can lead to scalability issues and complexity in managing broadcast domains. By avoiding VLAN stretching, the design becomes more flexible, scalable, and easier to troubleshoot, as each switch can handle its local VLANs without overburdening the network.
I think ans are B and D
B. Use switch clustering at the distribution layer where possible: Switch clustering can be used to manage multiple switches as a single logical switch to improve redundancy and scalability. This improves overall network flexibility.
D. Avoid stretching VLANs across switches: Avoiding stretching VLANs across switches limits broadcast domains and improves network scalability. This reduces the complexity of the Spanning Tree Protocol (STP) and allows network redundancy to be managed efficiently.
C, E are correct.
UniDirectional Link Detection (UDLD) is a Layer 2 protocol, "root guard" is also Layer 2 protocol. The question clearly asked to use "Layer 2 technologies" only.
Strectching vlan increases broadcast domain and potential network loop. Instead, use VPLS or VxLAN for Layer2 connectivity across switches. CE emphasizes stability, BD more towards flexibility and scalability
Is there relationship about flexibility and scalability with UDLD？
upvoted 4 times
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