In which protocol are REST API requests transported?

A customer has requested that you provide them with an architecture and bill-of-materials for a stack of top-of- rack switches. The customer has 34 HPE DL360 servers in the rack, each with four 1GBASE-T Ethernet ports which need to be connected to the network.
The customer is upgrading 50% of the 1GBASE-T Ethernet ports on the servers to 10GBASE-T Ethernet ports and needs the switching to support the upgraded servers. They are opposed to a chassis switch, and want to keep the number of managed devices on the network to a minimum.
Which architecture meets the customer requirements?

A customer has two HPE ProLiant Gen10 servers. They both require firmware installation.
Which HPE tool should you recommend for performing this task?

A customer has an ESXi server in a branch office They need to perform backups locally. The local backups must be replicated to the main data center with built-in deduplication
What should the customer install at the branch office?

Match each ProLiant solution to its ideal use case