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Download AWS Certified Advanced Networking Specialty (ANS-C00) Exam Exam Dumps

NEW QUESTION 36

You deploy an Amazon EC2 instance that runs a web server into a subnet in a VPC. An Internet gateway is attached, and the main route table has a default route (0.0.0.0/0) configured with a target of the Internet gateway.

The instance has a security group configured to allow as follows:

* Protocol: TCP

* Port: 80 inbound, nothing outbound

The Network ACL for the subnet is configured to allow as follows:

* Protocol: TCP

* Port: 80 inbound, nothing outbound

When you try to browse to the web server, you receive no response.

Which additional step should you take to receive a successful response?

A. Add an entry to the Network ACL outbound rules for Protocol: TCP, Port Range: 80
B. Add an entry to the Network ACL outbound rules for Protocol: TCP, Port Range: 1024-65535
C. Add an entry to the security group outbound rules for Protocol: TCP, Port Range: 80
D. Add an entry to the security group outbound rules for Protocol: TCP, Port Range: 1024-65535

Answer: B

NEW QUESTION 37

You need to set up an Amazon Elastic Compute Cloud (EC2) instance for an application that requires the lowest latency and the highest packet-per-second network performance. The application will talk to other servers in a peered VPC.

Which two of the following components should be part of the design? (Select two.)

A. Select an instance with Amazon Elastic Block Store (EBS)-optimization.
B. Ensure that the instance supports jumbo frames and set 9001 MTU.
C. Ensure that proper OS drivers are installed.
D. Select an instance that has support for multiple ENIs.
E. Select an instance with support for single root I/O virtualization.

Answer: D,E

Explanation:

Explanation/Reference:

References: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html

NEW QUESTION 38

An organization is using a VPC endpoint for Amazon S3. When the security group rules for a set of instances were initially configured, access was restricted to allow traffic only to the IP addresses of the Amazon S3 API endpoints in the region from the published JSON file. The application was working properly, but now is logging a growing number of timeouts when connecting with Amazon S3. No internet gateway is configured for the VPC.

Which solution will fix the connectivity failures with the LEAST amount of effort?

A. Update the VPC routing to direct Amazon S3 prefix-list traffic to the VPC endpoint using the route table APIs.
B. Update the application server's outbound security group to use the prefix-list for Amazon S3 in the same region.
C. Create an additional VPC endpoint for Amazon S3 in the same route table to scale the concurrent connections to Amazon.
D. Create a Lambda function to update the security group based on AmazonIPSpaceChanged notifications.

Answer: B

NEW QUESTION 39

You manage a web service that is used by client applications deployed in 300 offices worldwide.

The web service architecture is an Elastic Load balancer (ELB) distributing traffic across four application servers deployed in an autoscaling group across two availability zones.

The ELB is configured to use round robin, and sticky sessions are disabled. You have configured the NACLs and Security Groups to allow port 22 from your bastion host, and port 80 from

0.0.0.0/0. The client configuration is managed by each regional IT team.

Upon inspection you find that a large amount of requests from incorrectly configured sites are causing a single application server to degrade. The remainder of the requests are equally distributed across all servers with no negative effects.

What should you do to remedy the situation and prevent future occurrences?

A. Mark the affected instance as degraded in the ELB and raise it with the client application team.
B. Update the NACL to only allow port 80 to the application servers from the ELB servers.
C. Update the Security Groups to only allow port 80 to the application servers from the ELB.
D. Terminate the affected instance and allow Auto Scaling to create a new instance.

Answer: C

Explanation:

This way we are preventing all access except from ALB to ec2 instances. nobody can directly hit as the ec2 instances without ELB as ibound security group set as per the rule mentioned C , only allow http traffic from ALB to the underneath ec2 instances.

NEW QUESTION 40

You need to set up an Amazon Elastic Compute Cloud (EC2) instance for an application that requires the lowest latency and the highest packet-per-second network performance. The application will talk to other servers in a peered VPC.

Which two of the following components should be part of the design? (Select two.)