A web-startup runs its very successful social news application on Amazon EC2 with an Elastic Load Balancer, an Auto-Scaling group of Java/Tomcat application-servers, and DynamoDB as data store. The main web-application best runs on m2 x large instances since it is highly memory- bound Each new deployment requires semi-automated creation and testing of a new AMI for the application servers which takes quite a while ana is therefore only done once per week.
Recently, a new chat feature has been implemented in nodejs and wails to be integrated in the architecture. First tests show that the new component is CPU bound Because the company has some experience with using Chef, they decided to streamline the deployment process and use AWS Ops Works as an application life cycle tool to simplify management of the application and reduce the deployment cycles.
What configuration in AWS Ops Works is necessary to integrate the new chat module in the most cost- efficient and flexible way?

• A.Create two AWS OpsWorks stacks create two AWS Ops Works layers, create one custom recipe
• B.Create two AWS OpsWorks stacks create two AWS Ops Works layers, create two custom recipe
• C.Create one AWS OpsWorks stack, create one AWS Ops Works layer, create one custom recipe
• D.Create one AWS OpsWorks stack create two AWS Ops Works layers, create one custom recipe

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A company has a legacy application that processes data in two parts The second part of the process takes longer than the first, so the company has decided to rewrite the application as two microservices running on Amazon ECS that can scale independently.
How should a solutions architect integrate the microservices?

• A.Implement code in microservice 1 to send data to an Amazon S3 bucket. Use S3 event notifications to invoke microservice 2.
• B.Implement code in microservice 1 to publish data to an Amazon SNS topic Implement code in microservice 2 to subscribe to this topic
• C.Implement code in microservice 1 to send data to Amazon Kinesis Data Firehose. Implement code in microservice 2 to read from Kinesis Data Firehose.
• D.Implement code in microservice 1 to send data to an Amazon SQS queue Implement code in microservice 2 to process messages from the queue

Correct Answer: D

Explanation
Orchestrate Queue-based Microservices
In this tutorial, you will learn how to use AWS Step Functions and Amazon SQS to design and run a serverless workflow that orchestrates a message queue-based microservice. Step Functions is a serverless orchestration service that lets you easily coordinate multiple AWS services into flexible workflows that are easy to debug and easy to change. Amazon SQS is the AWS service that allows application components to communicate in the cloud.
This tutorial will simulate inventory verification requests from incoming orders in an e-commerce application as part of an order processing workflow. Step Functions will send inventory verification requests to a queue on SQS. An AWS Lambda function will act as your inventory microservice that uses a queue to buffer requests.
When it retrieves a request, it will check inventory and then return the result to Step Functions. When a task in Step Functions is configured this way, it is called a callback pattern. Callback patterns allow you to integrate asynchronous tasks in your workflow, such as the inventory verification microservice of this tutorial.

https://aws.amazon.com/getting-started/hands-on/orchestrate-microservices-with-message-queues-on-step-functi

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What is Oracle SQL Developer?

• A.A graphical Java tool distributed without cost by Oracle.
• B.An AWS developer who is an expert in Amazon RDS using both the Oracle and SQL Server DB engines
• C.A different DBMS released by Microsoft free of cost
• D.It is a variant of the SQL Server Management Studio designed by Microsoft to support Oracle DBMS functionalities

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An organization is planning to setup a management network on the AWS VPC. The organization is trying to secure the webserver on a single VPC instance such that it allows the internet traffic as well as the back- end management traffic. The organization wants to make so that the back end management network interface can receive the SSH traffic only from a selected IP range, while the internet facing webserver will have an IP address which can receive traffic from all the internet IPs.
How can the organization achieve this by running web server on a single instance?

• A.It is not possible to have two IP addresses for a single instance.
• B.The organization should create two network interfaces with the same subnet and security group to assign separate IPs to each network interface.
• C.The organization should create two network interfaces with separate subnets so one instance can have two subnets and the respective security groups for controlled access.
• D.The organization should launch an instance with two separate subnets using the same network interface which allows to have a separate CIDR as well as security groups.

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A company needs to migrate a large amount of data from an on-premises storage area network (SAN) to Amazon S3 The SAN currently has 200 TB of data and is receiving an additional 20 TB of data each month The company has a 500 Mbps connection to the internet What should the company do to migrate the data to Amazon S3 in the LEAST amount of time?

• A.Use an AWS Snowball Edge Storage Optimized device to migrate the initial 200 TB of data to Amazon S3 Sync any changed data by using AWS DataSync until the SAN is decommissioned
• B.Use a file syncing application to sync the data to Amazon S3 over the internet through a public S3 endpoint Sync any changed data the same way until the SAN is decommissioned
• C.Set up a 10 Gbps AWS Direct Connect connection Migrate the initial 200 TB of data to Amazon S3 by using a file syncing application Sync any changed data the same way until the SAN is decommissioned.
• D.Set up an AWS Site-to-Site VPN connection Use a file syncing application to sync the data to Amazon S3 through a private S3 endpoint Sync any changed data the same way until (he SAN is decommissioned

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