You want to improve the resilience of your EC2 web server. Which of the following is the most effective and efficient approach?
A) launch parallel, load-balanced instances in multiple AWS regions
B) launch parallel, load-balanced instances in multiple availability zones within a single AWS Region
C) launch parallel, auto scaled instances in multiple AWS Regions
D) launch parallel, auto scaled instances in multiple Availability Zones within a single AWS region
Ans: B) launch parallel, load-balanced instances in multiple availability zones within a single AWS Region
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Fill in the blank(s) with the appropriate word(s).