Yes. Most network switches can handle all ports at 100% utilization in both directions simultaneously.
Take for example the Mellanox SX6790 available for less than $100 on eBay. It has 36 56gbps ports. 36 * 2 * 56 = 4032gbps and it is stated to have a switching capacity of 4.032Tbps.
Edit: I guess you are asking how one would possibly sip 1TiB/s of data into a given client. You would need multiple clients spread across several switches to generate such load. Or maybe some freaky link aggregation. 10x 800gbps links for your client, plus at least 10x 800gbps links out to the servers.
Take for example the Mellanox SX6790 available for less than $100 on eBay. It has 36 56gbps ports. 36 * 2 * 56 = 4032gbps and it is stated to have a switching capacity of 4.032Tbps.
Edit: I guess you are asking how one would possibly sip 1TiB/s of data into a given client. You would need multiple clients spread across several switches to generate such load. Or maybe some freaky link aggregation. 10x 800gbps links for your client, plus at least 10x 800gbps links out to the servers.