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Question :-

A network architect is choosing core switches for an enterprise data center. One potential model has CLOS hardware architecture, and the other model has a cross-bar architecture. Which customer requirement would cause the network architect to select switches with CLOS architecture?
The customer has a multi-tenant data center, which needs to use Virtual Routing and Forwarding (VRF) to segment the network
The customer needs a highly-available core, which is best delivered with Intelligent Resilient Framework (IRF)
The customer has relatively small data center and does not have the budget to invest in high performance
The customer is planning to scale bandwidth up to 40G/100G in the next several years

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