Which network model would be appropriate for a 30-story building occupied by a single enterprise?

Your customer is a growing enterprise with limited capital to invest in network expansions.
They have noticed performance problems in their campus LAN, which have been traced back to a high oversubscription ratio between the aggregation and core layers. The customer's aggregation and core switches are connected using a single 1GbE connection.
Which solution improves network performance?

Which two items are key RFP elements? (Choose two.)

What describes customer business requirements?

Which two industry standard automation platforms are used to provision Juniper data center switches? (Choose two.)