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The Amazon ANS-C01 Exam consists of multiple-choice and multiple-response questions, and candidates are given 170 minutes to complete the exam. ANS-C01 exam is available in English, Japanese, Korean, and Simplified Chinese. The passing score is 750 out of 1000, and the exam fee is $300 USD.

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The AWS Certified Advanced Networking Specialty exam is a challenging certification that demonstrates your expertise in networking and AWS technologies. AWS Certified Advanced Networking Specialty Exam certification is highly valued in the industry and can open up a lot of career opportunities for professionals who hold it. If you are interested in validating your advanced networking skills, then Amazon ANS-C01 is the right certification for you.

Amazon AWS Certified Advanced Networking Specialty Exam Sample Questions (Q240-Q245):

NEW QUESTION # 240
A company is growing rapidly. Data transfers between the company's on-premises systems and Amazon EC2 instances that run in VPCs are limited by the throughput of a single AWS Site-to- Site VPN connection between the company's on-premises data center firewall and an AWS Transit Gateway.
A network engineer must resolve the throttling by designing a solution that is highly available and secure. The solution also must scale the VPN throughput from on premises to the VPC resources to support the increase in traffic.
Which solution will meet these requirements?

A. Configure a software appliance-based VPN connection over the internet from the on-premises firewall to an EC2 instance that has a large instance size and networking capabilities.
B. Configure multiple dynamic BGP-based Site-to-Site VPN connections to the transit gateway.
Configure equal-cost multi-path routing (ECMP).
C. Configure multiple static routing-based Site-to-Site VPN connections to the transit gateway.
Configure equal-cost multi-path routing (ECMP).
D. Configure a new Site-to-Site VPN connection to the transit gateway. Enable acceleration for the Site-to-Site VPN connection.

Answer: B

Explanation:
https://aws.amazon.com/blogs/networking-and-content-delivery/scaling-vpn-throughput-using- aws-transit-gateway/

NEW QUESTION # 241
A company runs an application on Amazon EC2 instances. A network engineer implements a NAT gateway in the application's VPC to replace self-managed NAT instances. After the network engineer shifts traffic from the self-managed NAT instances to the NAT gateway, users begin to report issues.
During troubleshooting, the network engineer discovers that the connection to the application is closing after approximately 6 minutes of inactivity.
What should the network engineer do to resolve this issue?

A. Check for decreases in the ActiveConnectionCount Amazon CloudWatch metric for the NAT gateway. Configure UDP keepalive on the application EC2 instances.
B. Check for increases in the PacketsDropCount Amazon CloudWatch metric for the NAT gateway.
Configure an HTTPS timeout value on the application EC2 instances.
C. Check for increases in the IdleTimeoutCount Amazon CloudWatch metric for the NAT gateway.
Configure TCP keepalive on the application EC2 instances.
D. Check for increases in the ErrorPortAllocation Amazon CloudWatch metric for the NAT gateway.
Configure an HTTP timeout value on the application EC2 instances.

Answer: C

Explanation:
Internet connection drops after 350 seconds
Problem
Your instances can access the internet, but the connection drops after 350 seconds.
Cause
If a connection that's using a NAT gateway is idle for 350 seconds or more, the connection times out.
When a connection times out, a NAT gateway returns an RST packet to any resources behind the NAT gateway that attempt to continue the connection (it does not send a FIN packet).
Solution
To prevent the connection from being dropped, you can initiate more traffic over the connection.
Alternatively, you can enable TCP keepalive on the instance with a value less than 350 seconds.

NEW QUESTION # 242
In AWS Direct Connect, to provide for failover, AWS recommends that you request and configure two dedicated connections to AWS. These connections can terminate on one or two routers in your network.
You can do this while __________________ with AWS Direct Connect step.
Response:

A. creating a Virtual Interface
B. completing the cross-connect
C. configuring redundant connections
D. verifying your Virtual Interface

Answer: C

NEW QUESTION # 243
You have configured a new Amazon S3 endpoint in your VPC. You have created a public Amazon S3 bucket so that you can test connectivity. You can download objects from your laptop but not from instances in the VPC. Which of the following could NOT be a problem?
Response:

A. The VPC endpoint security policy is blocking access to specified S3 bucket.
B. The route to the Amazon S3 prefix list is not in the routing table for the instance's subnet
C. There are not enough free IP addresses in your subnet, so you must choose a larger subnet or remove unused interfaces and IP addresses.
D. Domain Name System (DNS) was not enabled for the VPC, so you must enable DNS.

Answer: C

NEW QUESTION # 244
A software-as-a-service (SaaS) provider hosts its solution on Amazon EC2 instances within a VPC in the AWS Cloud. All of the provider's customers also have their environments in the AWS Cloud. A recent design meeting revealed that the customers have IP address overlap with the provider's AWS deployment. The customers have stated that they will not share their internal IP addresses and that they do not want to connect to the provider's SaaS service over the internet.
Which combination of steps is part of a solution that meets these requirements? (Choose two.)

A. Deploy an AWS Transit Gateway, and connect the SaaS VPC to it. Share the transit gateway with the customers. Configure routing on the transit gateway.
B. Configure a VPC peering connection to the customer VPCs. Route traffic through NAT gateways.
C. Configure an endpoint service, and grant the customers permission to create a connection to the endpoint service.
D. Deploy the SaaS service endpoint behind an Application Load Balancer.
E. Deploy the SaaS service endpoint behind a Network Load Balancer.

Answer: C,E

Explanation:
As the service provider, you create a Network Load Balancer in your VPC as the service front end. You then select this load balancer when you create the VPC endpoint service configuration.
You grant permission to specific AWS principals so that they can connect to your service. As a service consumer, the customer creates an interface VPC endpoint, which establishes connections between the subnets that they select from their VPC and your endpoint service.
https://docs.aws.amazon.com/vpc/latest/privatelink/privatelink-share-your-services.html

NEW QUESTION # 245
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