Question

Difficulty: MediumAWS Network Services

A retail company is launching a global web application. The company must ensure that users experience minimal latency when accessing static assets. Additionally, they must implement a stateless security layer at the boundary of their application's subnets to control inbound and outbound traffic.

Which two AWS services or features should the company configure to meet these requirements? (Select TWO.)

  1. Amazon CloudFront to cache static assets globally at edge locations close to usersAnswer
  2. Network Access Control Lists (Network ACLs) to define stateless firewall rules at the subnet levelAnswer
  3. C
    Security Groups to apply stateless traffic filtering rules directly to the subnet
  4. D
    VPC Peering to route public user traffic directly to the subnets based on latency
  5. E
    AWS Transit Gateway to centrally cache static web assets at regional edge locations

Answer

The correct answers are Amazon CloudFront (to cache static assets globally) and Network Access Control Lists (to act as a stateless subnet-level firewall).
The correct services are Amazon CloudFront, which minimizes latency by caching static assets close to users, and Network Access Control Lists (NACLs), which serve as a stateless firewall at the subnet boundary.

Step-by-Step Solution

1
Analyze the requirement for low-latency delivery of static assets globally.
Amazon CloudFront is identified as the AWS content delivery network (CDN) that caches content at global edge locations.
CloudFront reduces latency by fetching content from the closest edge location to the user.
2
Analyze the requirement for a stateless firewall operating at the subnet level.
Network Access Control Lists (NACLs) are identified as the appropriate subnet-level stateless firewall.
NACLs apply rules to the entire subnet and evaluate inbound and outbound traffic independently.

Key Concept

AWS Network Services (Amazon CloudFront and Amazon VPC Network ACLs)
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