A network administrator is selecting a switch that will operate at the network core. Which three features should the switch support for optimum network performance and reliability? (Choose three.)

port security
security policies
10 Gigabit Ethernet
quality of service (QoS)
hot-swappable hardware 
Power over Ethernet (PoE)

ccna exploration 3 chapter 1 Exam Question And Answers 

A network administrator is selecting a switch that will operate at the network core. Which three features should the switch support for optimum network performance and reliability? (Choose three.)