How could you configure your site to maintain site availability with minimum downtime if one of the 5 regions was to lose network connectivity for an extended period of time?
A. Establish VPN Connections between the instances in each region. Rely on BGP to failover in the case of a region wide connectivity outage
B. Create an Elastic Load Balancer to place in front of the EC2 instances. Set an appropriate health check on each ELB.
C. Create a Route 53 Latency Based Routing Record Set that resolves to Elastic Load Balancers in each region and has the Evaluate Target Health flag set to true.
D. Create a Route 53 Latency Based Routing Record Set that resolves to an Elastic Load Balancer in each region. Set an appropriate health check on each ELB.
Answer : C
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