Which of these protocols carries commands for reading from/writing to storage over a TCP/IP session?

Which technology uses LLDP TLVs to tell connected devices information such as the correct queue for PFC?

You are designing a Data Center with Spine Leaf architecture. Spine Switches are 8400 with 12 QSFP28 ports (F-B airflow) and leaf switches are 8360 switches stacked with VSX in each rack. The Customer sent you the following Specifications Each Spine Switch uses:
* 1 x 100G QSFP28 5M DACs to each Leaf switch Each Leaf Switch uses:
* 1 x 100G QSFP28 5M DACs to each Spine switch
* 2 x 100G 1M DAC for ISL
* 1 x 25G SFP28 DAC for Keep alive
What is the scalability in this design?

In Routing design for a two-tier topology between the data center and other parts of the network, select the best option from below

What is recommended for the routing protocol setup on leaf VSX pairs?