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Question 7 - CLF-C02 discussion

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A company wants to ensure that two Amazon EC2 instances are in separate data centers with minimal communication latency between the data centers.

How can the company meet this requirement?

A.
Place the EC2 instances in two separate AWS Regions connected with a VPC peering connection.
Answers
A.
Place the EC2 instances in two separate AWS Regions connected with a VPC peering connection.
B.
Place the EC2 instances in two separate Availability Zones within the same AWS Region.
Most voted
Answers (3)
Most voted
B.
Place the EC2 instances in two separate Availability Zones within the same AWS Region.
C.
Place one EC2 instance on premises and the other in an AWS Region. Then connect them by using an AWS VPN connection.
Answers
C.
Place one EC2 instance on premises and the other in an AWS Region. Then connect them by using an AWS VPN connection.
D.
Place both EC2 instances in a placement group for dedicated bandwidth.
Answers
D.
Place both EC2 instances in a placement group for dedicated bandwidth.
Suggested answer: B

Explanation:

The correct answer is B because placing the EC2 instances in two separate Availability Zones within the same AWS Region is the best way to meet the requirement. Availability Zones are isolated locations within an AWS Region that have independent power, cooling, and networking. Users can launch their resources, such as Amazon EC2 instances, in multiple Availability Zones to increase the fault tolerance and resilience of their applications. Availability Zones within the same AWS Region are connected with low-latency, high-throughput, and highly redundant networking. The other options are incorrect because they are not the best ways to meet the requirement. Placing the EC2 instances in two separate AWS Regions connected with a VPC peering connection is not the best way to meet the requirement because AWS Regions are geographically dispersed and may have higher communication latency between them than Availability Zones within the same AWS Region. VPC peering connection is a networking connection between two VPCs that enables users to route traffic between them using private IP addresses. Placing one EC2 instance on premises and the other in an AWS Region, and then connecting them by using an AWS VPN connection is not the best way to meet the requirement because on-premises and AWS Region are geographically dispersed and may have higher communication latency between them than Availability Zones within the same AWS Region.

AWS VPN connection is a secure and encrypted connection between a user's network and their VPC.

Placing both EC2 instances in a placement group for dedicated bandwidth is not the best way to meet the requirement because a placement group is a logical grouping of instances within a single Availability Zone that enables users to launch instances with specific performance characteristics. A placement group does not ensure that the instances are in separate data centers, and it does not provide low-latency communication between instances in different Availability Zones. Reference:

[Regions, Availability Zones, and Local Zones], [VPC Peering], [AWS VPN], [Placement Groups]

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asked 16/09/2024
Andy Hodges
39 questions
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Khoi Le

Edited 19 days ago

Voted B

Availability Zones (AZs) are distinct data centers within a single AWS Region, designed to be isolated from failures in other AZs. Each AZ is connected to others in the same region via low-latency, high-throughput links, allowing for minimal communication latency between instances in different AZs within the same region. By placing the EC2 instances in separate AZs within the same region, you ensure high availability while minimizing latency.

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Frank van Hout

Edited 19 days ago

Voted B

Choose B

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Billy Mitchell

Edited 19 days ago

Voted B

B correct

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