A media company uses hybrid connectivity to access video editing applications deployed on EC2 instances launched in custom VPC in the us-west-1 region. Employees access these applications for uploading live production videos. Recently there are complaints of high latency while accessing these applications from employees. The company has decided to set up AWS Local Zones within on-premises data centers to mitigate the latency issue. Project Team deploying AWS Local zones is concerned about the IP address to be used for new EC2 instances in AWS Local Zones.
Which of the following can be recommended for IP address assignment for EC2 instances in AWS Local Zones?

Answer options:

A.Enable Local Zone in us-west-1 region Extend existing subnet from VPC created in parent region to AWS Local Zones. Assign an IP address for an EC2 instance in AWS Local Zones from this subnet.
B.Enable Local Zone in us-west-1 region. Create a new subnet from an existing VPC in the parent region. Assign this subnet to AWS Local Zones. Assign an IP address for an EC2 instance in AWS Local Zones from this subnet.
C.Enable Local Zone globally. Create a new subnet from an existing VPC in the parent region. Assign an IP address for an EC2 instance in AWS Local Zones from this subnet.
D.Enable Local Zone globally. Create a new subnet from an existing VPC in the parent region. Assign this subnet to AWS Local Zones. Assign an IP address for an EC2 instance in AWS Local Zones from this subnet.

Correct Answer – B
For creating AWS Local Zone, it needs to be enabled in a region & not globally.While creating a subnet in AWS Local Zones, subnets from parent VPC are extended to these AWS Local Zones.
Option A is incorrect as a new subnet needs to be created from existing VPC & not existing subnet can be extended to AWS Local Zones.
Option C is incorrect as the new subnet in the existing VPC needs to be allocated to AWS Local Zones before being used.
Option D is incorrect as Local Zones need to be enabled in the us-west-1 region & not globally.
For more information on AWS Local Zones, refer to the following URL
https://aws.amazon.com/blogs/compute/low-latency-computing-with-aws-local-zones-part-1/