An organization has multiple applications running in VPCs across multiple AWS accounts. The network engineer has deployed a central VPC with a pair of software VPN instances that run IPSec tunnels with dynamic routing to VGWs of all application VPCs. This central VPC is connected to on-premises resources via a Direct Connect connection using a private VIF.
What additional configuration is required to enable the applications in VPCs to communicate with each other and access on-premises resources?
A company runs a large-scale application on a feel of Amazon EC2 instances that ate distributed across several VPCs A Network Load Balancer (NLB) in a separate VPC routes traffic to the EC2 instances The NLB's VPC is peered to all the application VPCs
The application must process millions of requests each minute during times of peak utilization Users are reporting that the connections to the application are failing during peak times Monitoring shows an increase in port allocation errors on the NLB.
Which action will solve this issue with the LEAST change to the architecture?
A company's developers wrote an AWS Lambda function to modify existing private route tables in response to a security appliance's auto scaling events. The Lambda function will be invoked on lifecycle hooks for an Auto Scaling group and Is configured to run in a VPC The developers are unsure if the following 1AM policy provides sufficient permissions to be used as an execution role for this Lambda function.
The developers ask a network engineer to review the permissions.
Which set of permissions should the network engineer add lo the policy?
A Network Engineer needs to create a public virtual interface on the company's AWS Direct Connect connection and only import routes which originated from the same region as the Direct Connect location.
What action should accomplish this?
All IP addresses within a 10.0.0.0/16 VPC are fully utilized with application servers across two Availability Zones. The application servers need to send frequent UDP probes to a single central authentication server on the Internet to confirm that is running up-to-date packages. The network is designed for application servers to use a single NAT gateway for internal access. Testing reveals that a few of the servers are unable to communicate with the authentication server.
A company has two redundant AWS Direct Connect connections to a VPC. The VPC is configured using BGP metrics so that one Direct Connect connection is used as the primary traffic path. The company wants the primary Direct Connect connection to fail to the secondary in less than one second.
What should be done to meet this requirement?
A company uses a newly provisioned 1-Gbps AWS Direct Connect connection to configure a virtual interface for access to Amazon S3
Which configuration values is the network engineer required to provide? (Select TWO.)
A company is delivering web content from an Amazon EC2 instance in a public subnet with address 2001 db8 1 100 1 Users report they are unable to access the web content The VPC Flow Logs tor the subnet contain the following entries.
Which action will restore network reachability to the EC2 instance1?
A company has deployed a production environment in the AWS Cloud The environment is contained in a VPC and includes a virtual private gateway The company has established an AWS Direct Connect connection which includes a private virtual interface (VIF) and a VPN connection to the on-premises data center
For traffic originating in the VPC what is the order of BGP path selection from MOST preferred to LEAST preferred?
A gaming company is running an online multiplayer game in multiple AWS Regions The company needs traffic from its end users to be routed to the Region that is closest to the end users geographically When maintenance occurs in a Region, traffic must be routed to the next closest Region with no changes to the IP addresses being used as connections by the end users
Which solution will meet these requirements?
A company’s Network Engineering team is solely responsible for deploying VPC infrastructure using AWS CloudFormation. The company wants to give its Developers the ability to launch applications using CloudFormation templates so that subnets can be created using available CIDR ranges.
What should be done to meet these requirements?
An organization has ordered a new AWS Direct Connect connection. The AWS Management Console reports that the connection is available and BGP status is up. However, the networking team is not able to reach instances in the VPC using ping on the organization's private IP address
What could cause this connectivity issue? (Choose two.)
Your company decides to use Amazon S3 to augment its on-premises data store. Instead of using the company’s highly controlled, on-premises Internet gateway, a Direct Connect connection is ordered to provide high bandwidth, low latency access to S3. Since the company does not own a publically routable IPv4 address block, a request was made to AWS for an AWS-owned address for a Public Virtual Interface (VIF).
The security team is calling this new connection a “backdoor”, and you have been asked to clarify the risk to the company.
Which concern from the security team is valid and should be addressed?
Your organization has a newly installed 1-Gbps AWS Direct Connect connection. You order the cross-connect from the Direct Connect location provider to the port on your router in the same facility. To enable the use of your first virtual interface, your router must be configured appropriately.
What are the minimum requirements for your router?
A customer is using ABC Telecom as a network provider. The customer has 10 different offices connected to ABC Telecom’s MPLS backbone. The customer is setting up an AWS Direct Connect connection to AWS and has provided the LOA-CFA to ABC Telecom. ABC Telecom has terminated the Direct Connect circuit into their MPLS backbone. To uniquely identify the customer’s traffic over the MPLS backbone, the customer must encapsulate all traffic with VLAN tag 100. The customer wants to send traffic to multiple VPCs.
Which two steps should be taken to meet the customer’s requirement? (Select two.)
A legacy, on-premises web application cannot be load balances effectively. There are both planned and unplanned events that cause usage spikes to millions of concurrent users. The existing infrastructure cannot handle the usage spikes. The CIO has mandated that the application be moved to the cloud to avoid further disruptions, with the additional requirement that source IP addresses be unaltered to support network traffic-monitoring needs. Which of the following designs will meet these requirements?
A company with several VPCs in the us-east-1 Region wants to reduce the cost of its workloads A network engineer has identified that all traffic bound to Amazon services is flowing through a NAT gateway. Additionally, all the VPCs are peered to a hub VPC for access to common services.
A company has a hybrid environment across its on-premises network and the AWS Cloud The company wants to use Amazon Elastic File System (Amazon EFS) to store and share data between on-premises services that are required to resolve DNS queries through on-premises DNS servers The company wants to use a custom domain name to connect to Amazon EFS The company also wants to avoid using the Amazon EFS target IP address.
What should a network engineer do to meet these requirements?
A company is using AWS to host all of its applications. Each application is isolated in its own Amazon VPC. Different environments such as Development, Test, and Production are also isolated in their own VPCs. The Network Engineer needs to automate VPC creation to enforce the company’s network and security standards. Additionally, the CIDR range used in each VPC needs to be unique.
Which solution meets all of these requirements?
You are deploying an EC2 instance in a private subnet that requires access to the Internet. One of the requirements for this solution is to restrict access to only particular URLs on a whitelist. In addition to the whitelisted URL, the instances should be able to access any Amazon S3 bucket in the same region via any URL.
Which of the following solutions should you deploy? (Select two.)
Your company needs to leverage Amazon Simple Storage Solution (S3) for backup and archiving. According to company policy, data should not flow on the public Internet even if data is encrypted. You have set up two S3 buckets in us-east-1 and us-west-2. Your company data center is located on the West Coast of the United States. The design must be cost-effective and enable minimal latency.
Which design should you set up?
Your company runs an HTTPS application using an Elastic Load Balancing (ELB) load balancer/PHP on nginx server/RDS in multiple Availability Zones. You need to apply Geographic Restriction and identify the client’s IP address in your application to generate dynamic content.
How should you utilize AWS services in a scalable fashion to perform this task?
The Web Application Development team is worried about malicious activity from 200 random IP addresses. Which action will ensure security and scalability from this type of threat?
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