QUESTION: 73

A bank built a new version of its banking application in AWS using containers that connect to an on-premises database over a VPN connection. This application version requires users to also update their client application.

The bank plans to deprecate the earlier client version. However, the company wants to keep supporting earlier clients through their on-premises version of the application to serve a small portion of the customers who haven’t yet upgraded.

What design will allow the company to serve both newer and earlier clients in the MOST efficient way?

Use an Amazon Route 53 multivalue answer routing policy to route older client traffic to the on-premises application version and the rest of the traffic to the new AWS based version.
Use a Classic Load Balancer for the new application. Route all traffic to the new application by using an Elastic Load Balancing (ELB) load balancer DNS. Define a user-agent-based rule on the backend servers to redirect earlier clients to the on-premises application.
Use an Application Load Balancer for the new application. Register both the new and earlier applications as separate target groups and use path-based routing to route traffic based on the application version.
Use an Application Load Balancer for the new application. Register both the new and earlier application backends as separate target groups. Use host header-based routing to route traffic based on the application version.

Answer(s): B

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QUESTION: 74

A company is deploying a non-web application on an AWS load balancer. All targets are servers located on- premises that can be accessed by using AWS Direct Connect. The company wants to ensure that the source IP addresses of clients connecting to the application are passed all the way to the end server.
How can this requirement be achieved?

Use a Network Load Balancer to automatically preserve the source IP address.
Use a Network Load Balancer and enable the X-Forwarded-For attribute.
Use a Network Load Balancer and enable the ProxyProtocol v2 attribute.
Use an Application Load Balancer to automatically preserve the source IP address in the X-Forwarded- For header.

Answer(s): D

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QUESTION: 75

An AWS CloudFormation template is being used to create a VPC peering connection between two existing operational VPCs, each belonging to a different AWS account. All necessary components in the
‘Remote’ (receiving) account are already in place.

The template below creates the VPC peering connection in the Originating account. It contains these components:

Which additional AWS CloudFormation components are necessary in the Originating account to create an operational cross-account VPC peering connection with AWS CloudFormation? (Choose two.)

Answer(s): D,E

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QUESTION: 76

A Network Engineer is provisioning a subnet for a load balancer that will sit in front of a fleet of application servers in a private subnet. There is limited IP space left in the VPC CIDR. The application has few users now but is expected to grow quickly to millions of users.
What design will use the LEAST amount of IP space, while allowing for this growth?

Use two /29 subnets for an Application Load Balancer in different Availability Zones.
Use one /29 subnet for the Network Load Balancer. Add another VPC CIDR to the VPC to allow for future growth.
Use two /28 subnets for a Network Load Balancer in different Availability Zones.
Use one /28 subnet for an Application Load Balancer. Add another VPC CIDR to the VPC to allow for future growth.

Answer(s): D

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