Networking and Content Delivery

Refer to the exhibit. A security group is attached to an Application Load Balancer (ALB) that serves HTTPS traffic on port 443. Users can access the application via HTTPS. However, the ALB's health checks to targets on port 80 are failing. What is the reason?

Instances in a private subnet need outbound internet access for software updates. The route table sends 0.0.0.0/0 to a NAT gateway, but updates fail. Which condition should you check first?

A company has two Amazon VPCs (VPC-A and VPC-B) in the same AWS Region with non-overlapping CIDR blocks. The SysOps administrator needs to establish private IP connectivity between the two VPCs with high throughput and minimal cost. Which solution should the administrator implement?

A SysOps Administrator manages a VPC with public and private subnets. The private subnets need to access the internet for software updates. The Administrator creates a NAT Gateway in a public subnet and updates the private subnet route table to point 0.0.0.0/0 to the NAT Gateway. However, instances in the private subnet still cannot reach the internet. What is the MOST likely reason?

A company has a VPC with public and private subnets. The private subnets need outbound internet access to download software updates while preventing any inbound internet traffic. The SysOps administrator must minimize costs. Which solution should the administrator implement?

A SysOps Administrator is configuring a VPC with a public subnet and a private subnet. The public subnet has an Internet Gateway. An EC2 instance in the private subnet needs to access an S3 bucket. What is the MOST secure way to provide this access?

An organization has a VPC with public and private subnets. The private subnets need to access the internet for software updates. A NAT gateway is deployed in a public subnet and the private subnet route table has a route for 0.0.0.0/0 pointing to the NAT gateway. However, instances in the private subnet cannot reach the internet. What could be the issue?

A SysOps administrator needs to allow traffic from a specific IP address range (203.0.113.0/24) to access an Amazon EC2 instance in a VPC. Which configuration step should be performed?

A company runs an application across multiple Availability Zones. The application servers are in private subnets and need outbound internet access to download software updates and patches. The SysOps administrator needs a highly available, fully managed solution to provide this outbound connectivity. Which solution should be used?

A company has a VPC with a CIDR block of 10.0.0.0/16. They need to connect to an on-premises network using a site-to-site VPN. The on-premises network uses 10.0.0.0/16 as well. Which solution avoids routing conflicts?

A company has a VPC with an IPv4 CIDR block of 10.0.0.0/16. They need to connect to an on-premises network with a CIDR of 10.0.0.0/8. What is the issue?

A company has a VPC with multiple subnets. The SysOps administrator wants to ensure that EC2 instances in a private subnet can access Amazon S3 without going through a NAT Gateway or internet gateway. Which solution meets this requirement?

Users are intermittently reporting 502 Bad Gateway errors when accessing the application through an Application Load Balancer. The team needs to identify which target IPs are associated with the failures and the request processing time for those requests. Application logs on instances do not capture failures before the ALB connection. What should be enabled?

An EC2 instance in the subnet associated with the network ACL above cannot receive HTTP traffic (port 80) from the internet. The instance has a security group allowing HTTP inbound. What is the cause?

A company has an Amazon VPC with public and private subnets across two Availability Zones. The company hosts a web application on EC2 instances in the private subnets. The application needs to access an Amazon S3 bucket to upload and download files. The SysOps administrator must ensure that traffic to S3 does not traverse the internet and minimizes data transfer costs. Which solution should the administrator implement?

Which THREE components are required to set up a site-to-site VPN connection between an on-premises network and an AWS VPC? (Choose three.)

EC2 instances in private subnets need to access S3 buckets. Currently the instances use a NAT Gateway to reach S3 over the internet. The team wants to keep S3 traffic private (within the AWS network) and reduce NAT Gateway data processing costs. What is the correct solution?

A SysOps administrator needs to ensure that all traffic to an Amazon S3 bucket is encrypted in transit. Which configuration should be used?

A SysOps administrator needs to ensure high availability for a web application running on EC2 instances across multiple Availability Zones. Which TWO actions should the administrator take?

Which TWO actions can be taken to improve the availability of a web application hosted on EC2 instances behind an Application Load Balancer? (Select two.)

A company hosts a web application behind an Application Load Balancer (ALB) in us-east-1. Users in Europe report high latency. The SysOps administrator decides to use AWS Global Accelerator to improve performance by directing traffic to the closest edge location. However, the application logs require the original client IP addresses of users. The ALB currently provides the client IP via the X-Forwarded-For header, but the development team warns that Global Accelerator may change the source IP. Which configuration should the administrator choose to meet both performance and logging requirements?

A company has an on-premises data center connected to AWS via an AWS Direct Connect private virtual interface (VIF). The SysOps administrator needs to ensure that all traffic between the on-premises network and Amazon S3 in the same AWS Region stays within the AWS network and does not traverse the internet. Which solution should the administrator implement?

A company has two Amazon VPCs: VPC-A (10.0.0.0/16) and VPC-B (10.1.0.0/16) in the same AWS Region. The SysOps administrator needs to enable private IP connectivity between the two VPCs without using the public internet. The solution must be simple, low-cost, and provide high throughput. Which AWS service should the administrator use?

A company has multiple on-premises branch offices, each with a site-to-site VPN connection to a single VPC in AWS. The SysOps administrator needs to enable communication between the branch offices using the AWS cloud as a hub. Which configuration should be implemented to achieve this with the least operational overhead?

Refer to the exhibit. A SysOps Administrator runs the above command and sees that an EC2 instance is unhealthy. The health check is configured to check the HTTP endpoint '/health' on port 80. The instance's security group allows inbound HTTP traffic from the ALB's security group. What is the MOST likely cause?

A SysOps administrator is configuring an Application Load Balancer to route traffic to multiple target groups based on the URL path. The ALB is not routing traffic correctly. Which listener rule configuration should be used to route requests with path /api/* to target group A and all other requests to target group B?

A company has an Application Load Balancer (ALB) in the us-east-1 region. Users in Asia report high latency. The SysOps administrator wants to use AWS Global Accelerator to improve performance by directing traffic to the closest edge location. Which step is required to integrate Global Accelerator with the ALB?

A company hosts a static website on Amazon S3. Users access the website from around the world. The SysOps administrator needs to deliver content with low latency and support HTTPS with a custom domain. Which AWS service should be used?

A company is using Amazon Route 53 as its DNS service. The SysOps team needs to route traffic to multiple resources based on the geographic location of the users. Which TWO routing policies can achieve this? (Select TWO.)

A SysOps administrator is configuring a VPC with a public subnet and a private subnet. The private subnet needs to access the internet to download patches. The administrator creates a NAT Gateway in the public subnet and updates the private subnet route table. However, instances in the private subnet cannot reach the internet. What is the most likely cause?

A company is using an Application Load Balancer (ALB) to distribute traffic to a fleet of EC2 instances. The security team reports that the ALB is receiving a high number of requests with suspicious User-Agent strings. The SysOps team needs to block these requests at the load balancer level without changing the application code. Which action should be taken?

A SysOps administrator is designing a highly available web application across multiple AWS regions. The application uses an Application Load Balancer in each region. Which TWO services can be used to route traffic to the closest regional load balancer based on latency?

A company uses Amazon CloudFront to deliver content from an Application Load Balancer (ALB) origin. The SysOps administrator needs to restrict access to the content so that only users from a specific geographic location can view it. Which CloudFront feature should be used?

Refer to the exhibit. A SysOps administrator has attached the bucket policy shown to an S3 bucket. Users from the IP range 192.0.2.0/24 report that they can access objects, but users from other IP ranges also report they can access objects. What is the most likely reason?

A security team applied Network ACL rules to a subnet to allow inbound TCP traffic on port 443 (HTTPS). Users connecting from the internet can initiate connections, but they never receive responses. The NACL is applied to the subnet containing the web servers. What is missing?

A company hosts a web application on Amazon EC2 instances in two AWS regions: us-east-1 and eu-west-1. The application is behind an Application Load Balancer (ALB) in each region. The SysOps administrator wants to direct users to the region that provides the lowest latency, automatically routing traffic away from a region if it becomes unhealthy. Which Amazon Route 53 routing policy should be used?

A company has an on-premises data center connected to an AWS VPC via an AWS Direct Connect connection. The company's SysOps administrator wants to ensure that traffic from the VPC destined for the on-premises network uses the Direct Connect connection instead of the internet. Which configuration should be used?

A company has two VPCs in the same AWS account and Region: VPC-A (10.0.0.0/16) and VPC-B (10.1.0.0/16). The SysOps administrator needs to establish connectivity between these VPCs so that resources in VPC-A can reach resources in VPC-B using private IP addresses. The solution must be highly available and not involve a third-party appliance. Which solution should the administrator implement?

A SysOps administrator notices that traffic from an Application Load Balancer to EC2 instances is failing intermittently. Security groups for the instances allow traffic from the ALB security group on port 80. The ALB target group health checks are failing. What is the most likely cause?

Drag and drop the steps to enable AWS CloudTrail logging for a specific S3 bucket into the correct order.

A company has a web application running on EC2 instances behind an Application Load Balancer (ALB) in the us-west-2 Region. Users are distributed globally and experience high latency. The SysOps administrator wants to improve latency and offload SSL termination to the edge. Which AWS service should be used with the ALB as the origin?

A company is using an Application Load Balancer (ALB) to distribute traffic to a fleet of EC2 instances. The SysOps administrator receives reports that some users are experiencing intermittent HTTP 503 errors. What is the most likely cause?

A company has an Amazon CloudFront distribution that delivers static content from an Amazon S3 bucket. The SysOps administrator needs to ensure that the content can only be accessed through CloudFront and not directly from the S3 bucket URL. The solution should use AWS managed services with minimal configuration. Which solution should the administrator implement?

A company runs an application on Amazon EC2 instances behind an Application Load Balancer (ALB). The ALB terminates SSL/TLS and forwards traffic to the instances over HTTP. The SysOps administrator needs to capture the original client IP address in the instance logs. How should the administrator configure this?

A company has a VPC with public and private subnets. The public subnet has a NAT Gateway. The private subnet has an EC2 instance that needs to download patches from the internet. The route table for the private subnet has a default route (0.0.0.0/0) pointing to the NAT Gateway. However, the instance cannot reach the internet. What is the most likely cause?

A company has a VPC with public and private subnets. A NAT Gateway is deployed in the public subnet to allow instances in the private subnet to access the internet. However, private instances cannot reach an external service at 203.0.113.50:443. What should be checked first?

A company has an application running on EC2 instances in a VPC. The application needs to access an S3 bucket in the same AWS region. Which configuration provides the MOST secure and cost-effective access?

Which TWO security measures should be implemented to protect a VPC from DDoS attacks? (Choose two.)

A company wants to establish a dedicated, low-latency, private connection between its on-premises data center and an AWS VPC. The company does not want to use the public internet. Which AWS service should be used to meet this requirement?

A company uses AWS Direct Connect to connect its on-premises network to AWS. The SysOps team notices that traffic from the on-premises network to a VPC is not using the Direct Connect connection but instead is going over the internet. The VPC has a virtual private gateway attached and the on-premises router is advertising a specific route. What is the most likely cause?

A company is using Amazon CloudFront to distribute content globally. The company wants to restrict access to content so that only users from specific countries can access it. Which CloudFront feature should be used?

A company is designing a VPC with public and private subnets. The private subnets need internet access for patching, but must not be directly reachable from the internet. Which TWO components should be used together?