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| Section | Weight | Objectives |
|---|---|---|
| Design Cost-Optimized Architectures | 20% | - Design cost-effective compute and network solutions
|
| Design Resilient Architectures | 26% | - Design for reliability and recovery
|
| Design Secure Architectures | 30% | - Design secure access to AWS resources
|
| Design High-Performing Architectures | 24% | - Design high-performance networking solutions
|
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NEW QUESTION # 947
A company runs multiple workloads on virtual machines (VMs) in an on-premises data center. The company is expanding rapidly. The on-premises data center is not able to scale fast enough to meet business needs. The company wants to migrate the workloads to AWS.
The migration is time sensitive. The company wants to use a lift-and-shift strategy for non-critical workloads.
Which combination of steps will meet these requirements? (Select THREE.)
Answer: A,C,D
Explanation:
AWS Application Migration Service (AWS MGN) is the recommended tool for a lift-and-shift strategy, especially for time-sensitive migrations. It automates the replication of on-premises VMs to AWS, minimizing the effort required for migration and testing.
Key steps:
* Replication with AWS MGN: The AWS Replication Agent is installed on the VMs to continuously replicate data to AWS, allowing you to manage migration easily.
* Testing and Cutover: Initial replication allows for testing in AWS before performing the final cutover, ensuring that the migration process is smooth and data integrity is maintained.
* AWS Documentation: AWS MGN is recommended for migrating virtual machines to the cloud with minimal downtime and disruption.
NEW QUESTION # 948
A company hosts an application on Amazon EC2 instances that are part of a target group behind an Application Load Balancer (ALB). The company has attached a security group to the ALB.
During a recent review of application logs, the company found many unauthorized login attempts from IP addresses that belong to countries outside the company's normal user base. The company wants to allow traffic only from the United States and Australia.
Answer: D
Explanation:
Why Option B is Correct:
AWS WAF: Provides a simple way to create geographic match rules to block or allow traffic based on country IP ranges.
Least Operational Overhead: Attaching the WAF rule to the ALB ensures centralized control without modifying ACLs or instance firewalls.
Why Other Options Are Not Ideal:
Option A: Network ACLs operate at the subnet level and can become complex to manage for dynamic or evolving IP ranges.
Option C: Managing IP-based rules in security groups and ACLs lacks scalability and does not provide country-based filtering.
Option D: Configuring host-based firewalls increases operational overhead and does not leverage AWS-managed solutions.
AWS Reference:
AWS WAF Geomatch:AWS Documentation - WAF Geomatch
NEW QUESTION # 949
A solutions architect is designing the network architecture for an application that runs on Amazon EC2 instances in an Auto Scaling group. The application needs to access data that is in Amazon S3 buckets.
Traffic to the S3 buckets must not use public IP addresses. The solutions architect will deploy the application in a VPC that has public and private subnets.
Which solutions will meet these requirements? (Select TWO.)
Answer: C,D
Explanation:
Option B:A gateway endpoint for S3 allows traffic to S3 without using public IPs and integrates with route tables.
Option D:Deploying EC2 instances in a private subnet with a NAT gateway enables outbound internet connectivity for other requirements without public IPs.
Option A:Egress-only internet gateways are for IPv6 traffic and do not work for IPv4 in this context.
Option C:Interface endpoints are not required for S3 as gateway endpoints are more suitable and cost-effective.
Option E:A customer gateway is for hybrid connectivity (e.g., on-premises), not suitable for this case.
AWS Documentation Reference:
VPC Endpoints
Amazon S3 Gateway Endpoints
NEW QUESTION # 950
A company runsmultiple applications on Amazon EC2 instances in a VPC.
Application Aruns in aprivate subnetthat has acustom route table and network ACL.
Application Bruns in asecond private subnet in the same VPC.
The companyneeds to prevent Application A from sending traffic to Application B.
Which solution will meet this requirement?
Answer: A
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
The requirement is toprevent Application A from sending traffic to Application B.
Understanding AWS Network Security Components:
Security Groups
Stateful(if traffic is allowed in one direction, it is automatically allowed in the reverse).
Do not support explicit deny rules, onlyallow rules.
Not suitable for blocking traffic in this scenario.
Network ACLs (NACLs)
Stateless(must define explicit rules for both inbound and outbound traffic).
Support explicit DENY rules.
Best suited for blocking traffic between subnets.
Analysis of the Options:
Option A: Deny Outbound Rule in Security Group for Application B#(Incorrect) Security Groups do not support explicit deny rules.
Does not block traffic from Application A to Application B.
Option B: Deny Outbound Rule in Security Group for Application A#(Incorrect) Security Groups do not support explicit deny rules.
Cannot effectively prevent Application A from sending traffic to Application B.
Option C: Deny Outbound Rule in NACL for Application B Subnet#(Incorrect) This wouldprevent Application B from sending traffic, butthe requirement is to block traffic from Application A to Application B.
Incorrect subnet is being modified.
Option D: Deny Outbound Rule in NACL for Application A Subnet#(Correct Choice) Prevents Application A from sending traffic to Application B by blocking outbound requests at the network level.
Effectively stops communication from A to B at the subnet level.
Why Option D is the Best Choice?
#NACLs support explicit deny rules, unlike security groups.#Blocks outbound traffic from Application A before it reaches Application B.#Works at the subnet level, making it scalable.
References:
AWS Network ACLs
NEW QUESTION # 951
A company wants to use AWS Direct Connect to connect on-premises networks to AWS. The company runs many VPCs in a single Region and plans to scale to hundreds of VPCs.
Which service will simplify and scale the network architecture?
Answer: A
Explanation:
As the number of VPCs grows, managing individual VPC connections becomes complex and unscalable.
AWS Transit Gateway is specifically designed to act as a central hub that connects multiple VPCs and on- premises networks through Direct Connect.
Option B simplifies network architecture by allowing hundreds or thousands of VPCs to connect through a single gateway, reducing routing complexity and operational overhead. Transit Gateway supports scalable routing, centralized inspection, and simplified expansion.
The other options do not address network connectivity or scaling challenges. Therefore, B is the correct solution.
NEW QUESTION # 952
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