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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?
AnyCompany has acquired Example Corp. AnyCompany's infrastructure is all on premises, and Example Corp's infrastructure is completely in the AWS Cloud. The
companies are using AWS Direct Connect with AWS Transit Gateway to establish connectivity between each other.
Example Corp has deployed a new application across two Availability Zones in a VPC with no internet gateway. The CIDR range for the VPC is 10.0.0.0/16. Example
Corp needs to access an application that is deployed on premises by AnyCompany. Because of compliance requirements, Example Corp must access the application
through a limited contiguous block of approved IP addresses (10.1.0.0/24).
A network engineer needs to implement a highly available solution to achieve this goal. The network engineer starts by updating the VPC to add a new CIDR range of
10.1.0.0/24.
What should the network engineer do next to meet the requirements?
The correct answer is B. In each Availability Zone in the VPC, create a subnet that uses part of the allowed IP address range. Create a private NAT gateway in each of the new subnets. Update the route tables that are associated with other subnets to route application traffic to the private NAT gateway in the corresponding Availability Zone. Add a route to the route table that is associated with the subnets of the private NAT gateways to send traffic destined for the application to the transit gateway.
This solution meets the requirements because:
* It uses a private NAT gateway, which can route traffic to other VPCs or on-premises networks through a transit gateway or a virtual private gateway1.
* It creates a subnet in each Availability Zone that uses part of the approved IP address range, which ensures high availability and compliance.
* It updates the route tables to send traffic from the other subnets to the private NAT gateway in the same Availability Zone, which reduces latency and improves performance.
* It adds a route to the route table of the private NAT gateway subnets to send traffic destined for the application to the transit gateway, which enables connectivity to the on-premises network.
The other options are incorrect because:
* Option A uses a public NAT gateway, which is not necessary for connecting to other VPCs or on-premises networks. A public NAT gateway also requires an elastic IP address, which is not part of the approved IP address range.
* Option C creates only one subnet and one private NAT gateway, which does not provide high availability across multiple Availability Zones.
* Option D uses a public NAT gateway, which is not necessary for connecting to other VPCs or on-premises networks. A public NAT gateway also requires an elastic IP address, which is not part of the approved IP address range. Additionally, option D creates only one subnet and one public NAT gateway, which does not provide high availability across multiple Availability Zones.
A company wants to improve visibility into its AWS environment. The AWS environment consists of multiple VPCs that are connected to a transit gateway. The transit gateway connects to an on-premises data center through an AWS Direct Connect gateway and a pair of redundant Direct Connect connections that use transit VIFs. The company must receive notification each time a new route is advertised to AWS from on premises over Direct Connect.
What should a network engineer do to meet these requirements?
https://docs.aws.amazon.com/network-manager/latest/cloudwan/cloudwan-cloudwatch-events.html
To receive notification each time a new route is advertised to AWS from on premises over Direct Connect, a network engineer should onboard Transit Gateway Network Manager to Amazon CloudWatch Logs Insights and use Amazon EventBridge (Amazon CloudWatch Events) to send notifications when routes change (Option B). This solution allows for real-time monitoring of route changes and automatic notification when new routes are advertised.
A company uses a 4 Gbps AWS Direct Connect dedicated connection with a link aggregation group (LAG) bundle to connect to five VPCs that are deployed in the us-east-1 Region. Each VPC serves a different business unit and uses its own private VIF for connectivity to the on-premises environment. Users are reporting slowness when they access resources that are hosted on AWS.
A network engineer finds that there are sudden increases in throughput and that the Direct Connect connection becomes saturated at the same time for about an hour each business day. The company wants to know which business unit is causing the sudden increase in throughput. The network engineer must find out this information and implement a solution to resolve the problem.
Which solution will meet these requirements?
To meet the requirements of finding out which business unit is causing the sudden increase in throughput and resolving the problem, the network engineer should review the Amazon CloudWatch metrics for VirtualInterfaceBpsEgress and VirtualInterfaceBpsIngress to determine which VIF is sending the highest throughput during the period in which slowness is observed (Option B). After identifying the VIF that is causing the issue, they can upgrade the bandwidth of the existing dedicated connection to 10 Gbps to resolve the problem (Option B).
A network engineer is using AWS Direct Connect connections and MACsec to encrypt data from a corporate data center to the Direct Connect location. The network engineer learns that the MACsec secret key might have been compromised. The network engineer needs to update the connection with an uncompromised secure key.
Which solution will meet this requirement?
