Exam 300-320 Question id=2770 Enterprise Data Center Integration

A network engineer is designing a network that must incorporate active-active redundancy to eliminate disruption when a link failure occurs between the core and distribution layer. What two technologies will allow this ?

A. Hot Standby Routing Protocol (HSRP)
B. Rapid Spanning Tree Protocol (RSTP)
C. Equal Cost Multi-Path (ECMP)
D. Multichassis EtherChannel (MEC)
E. Rapid Spanning Tree Protocol Plus (RSTP+)

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