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NEW QUESTION 40
A startup launched a fleet of on-demand EC2 instances to host a massively multiplayer online role- playing game (MMORPG). The EC2 instances are configured with Auto Scaling and AWS Systems Manager.
What can be used to configure the EC2 instances without having to establish an RDP or SSH connection to each instance?
- A. EC2Config
- B. Run Command
- C. AWS CodePipeline
- D. AWS Config
Answer: B
Explanation:
You can use Run Command from the console to configure instances without having to login to each instance.
AWS Systems Manager Run Command lets you remotely and securely manage the configuration of your managed instances. A managed instance is any Amazon EC2 instance or on-premises machine in your hybrid environment that has been configured for Systems Manager. Run Command enables you to automate common administrative tasks and perform ad hoc configuration changes at scale. You can use Run Command from the AWS console, the AWS Command Line Interface, AWS Tools for Windows PowerShell, or the AWS SDKs. Run Command is offered at no additional cost. Hence, the correct answer is: Run Command.
Explanation:
Reference:
https://docs.aws.amazon.com/systems-manager/latest/userguide/execute-remote-commands.html AWS Systems Manager Overview:
https://www.youtube.com/watch?v=KVFKyMAHxqY
Check out this AWS Systems Manager Cheat Sheet:
https://tutorialsdojo.com/aws-systems-manager/
NEW QUESTION 41
A company is migrating its on-premises PostgreSQL database to Amazon Aurora PostgreSQL. The on-premises database must remain online and accessible during the migration. The Aurora database must remain synchronized with the on-premises database.
Which combination of actions must a solutions architect take to meet these requirements? (Choose two.)
- A. Create an AWS Database Migration Service (AWS DMS) replication server
- B. Create an ongoing replication task.
- C. Create a database backup of the on-premises database
- D. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to monitor the database synchronization
- E. Convert the database schema by using the AWS Schema Conversion Tool (AWS SCT).
Answer: A,E
NEW QUESTION 42
A car dealership website hosted in Amazon EC2 stores car listings in an Amazon Aurora database managed by Amazon RDS. Once a vehicle has been sold, its data must be removed from the current listings and forwarded to a distributed processing system.
Which of the following options can satisfy the given requirement?
- A. Create an RDS event subscription and send the notifications to AWS Lambda. Configure the Lambda function to fan out the event notifications to multiple Amazon SQS queues to update the processing system.
- B. Create a native function or a stored procedure that invokes a Lambda function. Configure the Lambda function to send event notifications to an Amazon SQS queue for the processing system to consume.
- C. Create an RDS event subscription and send the notifications to Amazon SNS. Configure the SNS topic to fan out the event notifications to multiple Amazon SQS queues. Process the data using Lambda functions.
- D. Create an RDS event subscription and send the notifications to Amazon SQS. Configure the SQS queues to fan out the event notifications to multiple Amazon SNS topics. Process the data using Lambda functions.
Answer: B
Explanation:
You can invoke an AWS Lambda function from an Amazon Aurora MySQL-Compatible Edition DB cluster with a native function or a stored procedure. This approach can be useful when you want to integrate your database running on Aurora MySQL with other AWS services. For example, you might want to capture data changes whenever a row in a table is modified in your database.
In the scenario, you can trigger a Lambda function whenever a listing is deleted from the database. You can then write the logic of the function to send the listing data to an SQS queue and have different processes consume it.
Hence, the correct answer is: Create a native function or a stored procedure that invokes a Lambda function. Configure the Lambda function to send event notifications to an Amazon SQS queue for the processing system to consume.
RDS events only provide operational events such as DB instance events, DB parameter group events, DB security group events, and DB snapshot events.
What we need in the scenario is to capture data-modifying events (INSERT, DELETE, UPDATE) which can be achieved thru native functions or stored procedures. Hence, the following options are incorrect:
– Create an RDS event subscription and send the notifications to Amazon SQS. Configure the SQS queues to fan out the event notifications to multiple Amazon SNS topics. Process the data using Lambda functions.
– Create an RDS event subscription and send the notifications to AWS Lambda. Configure the Lambda function to fan out the event notifications to multiple Amazon SQS queues to update the processing system.
– Create an RDS event subscription and send the notifications to Amazon SNS. Configure the SNS topic to fan out the event notifications to multiple Amazon SQS queues. Process the data using Lambda functions.
References:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Integrating.Lambda.h tml https://aws.amazon.com/blogs/database/capturing-data-changes-in-amazon-aurora-using-aws- lambda/ Amazon Aurora Overview:
https://youtu.be/iwS1h7rLNBQ
Check out this Amazon Aurora Cheat Sheet: https://tutorialsdojo.com/amazon-aurora/
NEW QUESTION 43
A company plans to migrate all of their applications to AWS. The Solutions Architect suggested to store all the data to EBS volumes. The Chief Technical Officer is worried that EBS volumes are not appropriate for the existing workloads due to compliance requirements, downtime scenarios, and IOPS performance.
Which of the following are valid points in proving that EBS is the best service to use for migration?
(Select TWO.)
- A. When you create an EBS volume in an Availability Zone, it is automatically replicated on a separate AWS region to prevent data loss due to a failure of any single hardware component.
- B. An EBS volume is off-instance storage that can persist independently from the life of an instance.
- C. EBS volumes can be attached to any EC2 Instance in any Availability Zone.
- D. Amazon EBS provides the ability to create snapshots (backups) of any EBS volume and write a copy of the data in the volume to Amazon RDS, where it is stored redundantly in multiple Availability Zones
- E. EBS volumes support live configuration changes while in production which means that you can modify the volume type, volume size, and IOPS capacity without service interruptions.
Answer: B,E
Explanation:
An Amazon EBS volume is a durable, block-level storage device that you can attach to a single EC2 instance. You can use EBS volumes as primary storage for data that requires frequent updates, such as the system drive for an instance or storage for a database application. You can also use them for throughput-intensive applications that perform continuous disk scans. EBS volumes persist independently from the running life of an EC2 instance. Here is a list of important information about EBS Volumes:
– When you create an EBS volume in an Availability Zone, it is automatically replicated within that zone to prevent data loss due to a failure of any single hardware component.
– An EBS volume can only be attached to one EC2 instance at a time.
– After you create a volume, you can attach it to any EC2 instance in the same Availability Zone
– An EBS volume is off-instance storage that can persist independently from the life of an instance. You can specify not to terminate the EBS volume when you terminate the EC2 instance during instance creation.
– EBS volumes support live configuration changes while in production which means that you can modify the volume type, volume size, and IOPS capacity without service interruptions.
– Amazon EBS encryption uses 256-bit Advanced Encryption Standard algorithms (AES-256)
– EBS Volumes offer 99.999% SLA.
The option that says: When you create an EBS volume in an Availability Zone, it is automatically replicated on a separate AWS region to prevent data loss due to a failure of any single hardware component is incorrect because when you create an EBS volume in an Availability Zone, it is automatically replicated within that zone only, and not on a separate AWS region, to prevent data loss due to a failure of any single hardware component.
The option that says: EBS volumes can be attached to any EC2 Instance in any Availability Zone is incorrect as EBS volumes can only be attached to an EC2 instance in the same Availability Zone. The option that says: Amazon EBS provides the ability to create snapshots (backups) of any EBS volume and write a copy of the data in the volume to Amazon RDS, where it is stored redundantly in multiple Availability Zones is almost correct. But instead of storing the volume to Amazon RDS, the EBS Volume snapshots are actually sent to Amazon S3.
References:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumes.html
https://aws.amazon.com/ebs/features/
Check out this Amazon EBS Cheat Sheet:
https://tutorialsdojo.com/amazon-ebs/
Here is a short video tutorial on EBS:
https://youtu.be/ljYH5lHQdxo
NEW QUESTION 44
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