A company needs two core switches for its mid-sized data center. The company requires ultradeep packet buffering, IPv6 routing, and up to 24 10GbE ports on each switch. Which switch
series best meets the company requirements?

A.
HP 5900AF Series

B.
HP 5920AF Series

C.
HP FlexFabric 11900 Series

D.
HP FlexFabric 12900 Series

Explanation:
http://h17007.www1.hp.com/us/en/networking/products/switches/HP_5920_Switch_Ser
ies/index.aspx#tab=TAB2