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AWS Certified SysOps Administrator - Associate Questions and Answers

Question 1

A SysOps Administrator is maintaining an application that runs on Amazon EC2 instances behind an application Load Balancer (ALB). Users are reporting errors when attempting to launch the application. The administrator notices an increase in the httpcode_ELS_5xx_Count Amazon CloudWatch metric for the load balancer.

What is the possible cause for this increase?

Options:

A.

The ALB Is associated with private subnets within the VPC.

B.

The ALB received a request from a client, but the client closed the connection.

C.

The ALB security group is not configured to allow inbound traffic from the users.

D.

The ALB target group does not contain healthy EC2 instances.

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Question 2

An ecommerce site is using Amazon ElastiCache with Memcached to store session state for a web application and to cache frequently used data. For the last month, users have been complaining about performance. The metric data for the Amazon EC2 instances and the Amazon RDS instance appear normal, but the eviction count metrics are high.

What should be done to address this issue and improve performance?

Options:

A.

Scale the cluster by adding additional nodes

B.

Scale the cluster by adding read replicas

C.

Scale the cluster by increasing CPU capacity

D.

Scale the web layer by adding additional EC2 instances

Question 3

A company has a multi-tier web application. In the web tier, all the servers are in private subnets inside a VPC. The development team wants to make changes to the application that requires access to Amazon S3.

What should be done to accomplish this?

Options:

A.

Create a customer gateway to connect to Amazon S3 Modify the route table of the private subnets to use the customer gateway

B.

Create a gateway VPC endpoint for Amazon S3 Modify the route table of the private subnets to use the gateway VPC endpoint.

C.

Create a NAT gateway in the private subnets. Modify the route table of the subnets to use the NAT gateway.

D.

Create an S3 bucket policy to allow connections from the private subnets. Modify the route table.