A network engineer needs to update a company's hybrid network to support IPv6 for the upcoming release of a new application. The application is hosted in a VPC in the AWS Cloud. The company's current AWS infrastructure includes VPCs that are connected by a transit gateway. The transit gateway is connected to the on-premises network by AWS Direct Connect and AWS Site-to-Site VPN. The company's on-premises devices have been updated to support the new IPv6 requirements.The company has enabled IPv6 for the existing VPC by assigning a new IPv6 CIDR block to the VPC and by assigning IPv6 to the subnets for dual-stack support. The company has launched new Amazon EC2 instances for the new application in the updated subnets.When updating the hybrid network to support IPv6 the network engineer must avoid making any changes to the current infrastructure. The network engineer also must block direct access to the instances' new IPv6 addresses from the internet. However, the network engineer must allow outbound internet access from the instances.What is the MOST operationally efficient solution that meets these requirements?
Answer(s): B
In this scenario, the network engineer needs to update the hybrid network to support IPv6 without making changes to the current infrastructure. The company has already enabled IPv6 for the VPC by assigning a new IPv6 CIDR block to the VPC and assigning IPv6 addresses to the subnets for dual-stack support.Option B suggests updating the Direct Connect transit VIF and configuring BGP peering with the AWS assigned IPv6 peering address. This allows the company's on-premises devices to establish IPv6 connectivity with the VPC.The option also suggests updating the existing VPN connection to support IPv6 connectivity. This ensures that the VPC and the on-premises devices can communicate over IPv6 through the VPN connection.Additionally, an egress-only internet gateway is added to block direct access to the instances' new IPv6 addresses from the internet while allowing outbound internet access from the instances. This provides the necessary security and connectivity requirements.Finally, any affected VPC security groups and route tables should be updated to allow connectivity within the VPC and between the VPC and the on-premises devices. This ensures proper routing and communication between the different network components.
A network engineer must provide additional safeguards to protect encrypted data at Application Load Balancers (ALBs) through the use of a unique random session key.What should the network engineer do to meet this requirement?
Answer(s): D
Forward secrecy (FS) is a security feature that ensures that even if an attacker is able to compromise the session keys for a particular connection, they will not be able to use those keys to decrypt any past or future communications. This is because FS uses a new, unique session key for each connection.To enable FS on an ALB, you can change the ALB security policy to a policy that supports FS. You can do this by following these steps:Go to the ALB console.Select the ALB that you want to change.Click the Configuration tab.Under Security, click Edit.In the Security policy drop-down list, select a policy that supports FS.Click Save.Once you have enabled FS on an ALB, all connections to the ALB will use unique, random session keys. This will help to protect your data from being intercepted and decrypted by attackers.Here are some additional things to keep in mind when using FS on ALBs:FS is only available for connections that use the TLS 1.2 or TLS 1.3 protocols.If you are using a custom security policy, you will need to make sure that it includes a rule that enables FS.You can also use AWS Key Management Service (KMS) to encrypt session keys. This can be useful if you need to rotate session keys or if you want to store them in a secure location.
A company has deployed a software-defined WAN (SD-WAN) solution to interconnect all of its offices. The company is migrating workloads to AWS and needs to extend its SD-WAN solution to support connectivity to these workloads.A network engineer plans to deploy AWS Transit Gateway Connect and two SD-WAN virtual appliances to provide this connectivity. According to company policies, only a single SD-WAN virtual appliance can handle traffic from AWS workloads at a given time.How should the network engineer configure routing to meet these requirements?
Answer(s): C
A company is planning to deploy many software-defined WAN (SD-WAN) sites. The company is using AWS Transit Gateway and has deployed a transit gateway in the required AWS Region. A network engineer needs to deploy the SD-WAN hub virtual appliance into a VPC that is connected to the transit gateway. The solution must support at least 5 Gbps of throughput from the SD-WAN hub virtual appliance to other VPCs that are attached to the transit gateway.Which solution will meet these requirements?
A company is deploying a new application on AWS. The application uses dynamic multicasting. The company has five VPCs that are all attached to a transit gateway Amazon EC2 instances in each VPC need to be able to register dynamically to receive a multicast transmission.How should a network engineer configure the AWS resources to meet these requirements?
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Den Commented on July 30, 2025 answers have explanation which really helps to understand the topic Anonymous
Paul Commented on July 30, 2025 #115: the correct answer is D: Set field values and add messages. A Business Rule requires scripting to generate an event, so answer B is incorrect. UNITED STATES
Sarkar Commented on July 30, 2025 I just passed this exam. Here are some info: Number of Questions: Approximately 50-60 multiple-choice or multiple-select questions Duration: 90 minutes Passing Score: 70% (I got 88%) Questions from this exam dump: about 75% accurate and similar to real exam. Good luck to all. INDIA
Esteban Commented on July 30, 2025 Excellent practice! Anonymous
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