Top Tips Of Up To The Immediate Present DOP-C01 Questions Pool

NEW QUESTION 1
You have a development team that is planning for continuous release cycles for their application. They want to use the AWS services available to be able to deploy a web application and also ensure they can rollback to previous versions fairly quickly. Which of the following options can be used to achieve this requirement. Choose 2 answers from the options given below

• A. Usethe Elastic beanstalk servic
• B. Use Application versions and upload therevisions of your applicatio
• C. Deploy the revisions accordingly and rollback toprior versions accordingly.
• D. Usethe Elastic beanstalk servic
• E. Create separate environments for eachapplication revisio
• F. Revert back to an environment incase the new environmentdoes not work.
• G. Usethe Opswork service to deploy the web instance
• H. Deploy the app to the Opsworkweb laye
• I. Rollback using the Deploy app in Opswor
• J. Usethe Cloudformation servic
• K. Create separate templates for each applicationrevision and deploy them accordingly.

Answer: AC

Explanation:
The AWS documentation mentions the following
In Elastic Beanstalk, an application version refers to a specific, labeled iteration of deployable code for a web application. An application version points to an Amazon
Simple Storage Service (Amazon S3) object that contains the deployable code such as a Java WAR file.
An application version is part of an application. Applications
can have many versions and each application version is unique. In a running environment, you can deploy any application version you already uploaded to the application or you can upload and immediately deploy a new application version. You might upload multiple application versions to test differences between one
version of your web application and another.
For more information on Elastic beanstalk components, please refer to the below link:
◆ http://docs.aws.a mazon.com/elasticbeanstalk/latest/dg/concepts.compo nents.htm I
An AWS OpsWorks Stacks app represents code that you want to run on an application server. The code itself resides in a repository such as an Amazon S3 archive; the app contains the information required to deploy the code to the appropriate application server instances. For more information on Opswork apps, please refer to the below link:
• http://docs.aws.amazon.com/opsworks/latest/userguide/workingapps.html
Option B is incorrect. Our scenario is focusing on continuous development and continuous releases of the application versions. Since this is going to be an ongoing process, it is a best practice to upload the revision of your application and if required roll back to previous version.
Option D is incorrect. This question gives importance to the application hosted on the infrastructure. "They want to use the AWS services available to be able to deploy a web application and also ensure they can rollback to previous versions of the application quickly."
In this case, Cloud Formation provides a common language for you to describe and provision all the infrastructure resources in your cloud environment. Cloud Formation allows you to use a simple text file to model and provision, in an automated and secure manner, all the resources needed for your applications across all regions and accounts.
Hence, Cloud Formation is nothing to do with an application hosted on the infrastructure.

NEW QUESTION 2
You are managing an application that contains Go as the front end, MongoDB for document management and is hosted on a relevant Web server. You pre-bake AMI'S with the latest version of the Web server, then user the User Data section to setup the application. You now have a change to the underlying Operating system version and need to deploy that accordingly. How can this be done
in the easiest way possible.

• A. Createa new EBS Volume with the relevant OS patches and attach it to the EC2lnstance.
• B. Createa Cloudformation stack with the new AMI and then deploy the applicationaccordingly.
• C. Createa new pre-baked AM I with the new OS and use the User Data seciton to deploy theapplication.
• D. Createan Opswork stack with the new AMI and then deploy the application accordingly.

Answer: C

Explanation:
The best way in this scenario is to continue the same deployment process which was being used and create a new AMI and then use the User Data section to deploy the application.
For more information on AWS AMI's please see the below link:
• http://docs.aws.amazon.com/AWSCC2/latest/UserGuide/AMIs.htmls

NEW QUESTION 3
Your security officer has told you that you need to tighten up the logging of all events that occur on your AWS account. He wants to be able to access all events that occur on the account across all regions quickly and in the simplest way possible. He also wants to make sure he is the only person that has access to these events in the most secure way possible. Which of the following would be the best solution to assure his requirements are met? Choose the correct answer from the options below

• A. Use CloudTrail to logall events to one S3 bucke
• B. Make this S3 bucket only accessible by your security officer with a bucket policy that restricts access to his user only and also add MFA to the policy for a further level of securit
• C. ^/
• D. Use CloudTrail to log all events to an Amazon Glacier Vaul
• E. Make sure the vault access policy only grants access to the security officer's IP address.
• F. Use CloudTrail to send all API calls to CloudWatch and send an email to the security officer every time an API call is mad
• G. Make sure the emails are encrypted.
• H. Use CloudTrail to log all events to a separate S3 bucket in each region as CloudTrail cannot write to a bucket in a different regio
• I. Use MFA and bucket policies on all the different buckets.

Answer: A

Explanation:
AWS CloudTrail is a service that enables governance, compliance, operational auditing, and risk auditing of your AWS account. With CloudTrail, you can log,
continuously monitor, and retain events related to API calls across your AWS infrastructure. CloudTrail provides a history of AWS API calls for your account, including API calls made through the AWS Management Console, AWS SDKs, command line tools, and other AWS services. This history simplifies security analysis, resource change tracking, and troubleshooting.
You can design cloudtrail to send all logs to a central S3 bucket. For more information on cloudtrail, please visit the below URL:
◆ https://aws.amazon.com/cloudtrail/

NEW QUESTION 4
Your company is getting ready to do a major public announcement of a social media site on AWS. The website is running on EC2 instances deployed across multiple Availability Zones with a Multi-AZ RDS MySQL Extra Large DB Instance. The site performs a high number of small reads and writes per second and relies on an eventual consistency model. After comprehensive tests you discover that there is read contention on RDS MySQL. Which are the best approaches to meet these requirements? Choose 2 answers from the options below

• A. DeployElasticCache in-memory cache running in each availability zone
• B. Implementshardingto distribute load to multiple RDS MySQL instances
• C. Increasethe RDS MySQL Instance size and Implement provisioned IOPS
• D. Addan RDS MySQL read replica in each availability zone

Answer: AD

Explanation:
Implement Read Replicas and Elastic Cache
Amazon RDS Read Replicas provide enhanced performance and durability for database (DB) instances. This replication feature makes it easy to elastically scale out beyond the capacity constraints of a single DB Instance for read-heavy database workloads. You can create one or more replicas of a given source DB Instance and serve high-volume application read traffic from multiple copies of your data, thereby increasing aggregate read throughput.
For more information on Read Replica's, please visit the below link
• https://aws.amazon.com/rds/details/read-replicas/
Amazon OastiCache is a web service that makes it easy to deploy, operate, and scale an in-memory data store or cache in the cloud. The service improves the performance of web applications by allowing you to retrieve information from fast, managed, in-memory data stores, instead of relying entirely on slower disk-based databases.
For more information on Amazon OastiCache, please visit the below link
• https://aws.amazon.com/elasticache/

NEW QUESTION 5
You have a requirement to host a cluster of NoSQL databases. There is an expectation that there will be a lot of I/O on these databases. Which EBS volume type is best for high performance NoSQL cluster deployments?

• A. io1
• B. gp1
• C. standard
• D. gp2

Answer: A

Explanation:
Provisioned IOPS SSD should be used for critical business applications that require sustained IOPS performance, or more than 10,000 IOPS or 160 MiB/s of throughput per volume
This is ideal for Large database workloads, such as:
• MongoDB
• Cassandra
• MicrosoftSQL Server
• MySQL
• PostgreSQL
• Oracle
For more information on the various CBS Volume Types, please refer to the below link:
• http://docs.aws.amazon.com/AWSCC2/latest/UserGuide/ CBSVolumeTvpes.html

NEW QUESTION 6
You have a development team that is continuously spending a lot of time rolling back updates for an application. They work on changes, and if the change fails, they spend more than 5-6h in rolling back the update. Which of the below options can help reduce the time for rolling back application versions.

• A. Use Elastic Beanstalk and re-deploy using Application Versions
• B. Use S3 to store each version and then re-deploy with Elastic Beanstalk
• C. Use CloudFormation and update the stack with the previous template
• D. Use OpsWorks and re-deploy using rollback feature.

Answer: A

Explanation:
Option B is invalid because Clastic Beanstalk already has the facility to manage various versions and you don't need to use S3 separately for this.
Option C is invalid because in Cloudformation you will need to maintain the versions. Clastic Beanstalk can so that automatically for you.
Option D is good for production scenarios and Clastic Beanstalk is great for development scenarios. AWS beanstalk is the perfect solution for developers to maintain application versions.
With AWS Clastic Beanstalk, you can quickly deploy and manage applications in the AWS Cloud without worrying about the infrastructure that runs those
applications. AWS Clastic Beanstalk reduces management complexity without restricting choice or control. You simply upload your application, and AWS Clastic
Beanstalk automatically handles the details of capacity provisioning, load balancing, scaling, and application health monitoring.
For more information on AWS Beanstalk please refer to the below link: https://aws.amazon.com/documentation/elastic-beanstalk/

NEW QUESTION 7
Your CTO is very worried about the security of your AWS account. How best can you prevent hackers
from completely hijacking your account?

• A. Useshort but complex password on the root account and any administrators.
• B. UseAWS 1AM Geo-Lock and disallow anyone from logging in except for in your city.
• C. UseMFA on all users and accounts, especially on the root account.
• D. Don'twrite down or remember the root account password after creating the AWSaccount.

Answer: C

Explanation:
The AWS documentation mentions the following on MFA
AWS Multi-Factor Authentication (MFA) is a simple best practice that adds an extra layer of protection on top of your user name and password. With MFA enabled, when a user signs in to an AWS website, they will be prompted for their user name and password (the first factor—what they know), as well as for an authentication code from their AWS MFA device (the second factor—what they have). Taken together, these multiple factors provide increased security for your AWS account settings and resources.
For more information on MFA please visit the below link https://aws.ama zon.com/ia m/detai Is/mfa/

NEW QUESTION 8
You are building a Ruby on Rails application for internal, non-production use which uses MySQL as a database. You want developers without very much AWS experience to be able to deploy new code with a single command line push. You also want to set this up as simply as possible. Which tool is ideal for this setup?

• A. AWSCIoudFormation
• B. AWSOpsWorks
• C. AWS ELB+ EC2 with CLI Push
• D. AWS Elastic Beanstalk

Answer: D

Explanation:
With Elastic Beanstalk, you can quickly deploy and manage applications in the AWS Cloud without worrying about the infrastructure that runs those applications.
AWS Elastic Beanstalk reduces management complexity without restricting choice or control. You simply upload your application, and Elastic Beanstalk automatically handles the details of capacity provisioning, load balancing, scaling, and application health monitoring
Elastic Beanstalk supports applications developed in Java, PHP, .NET, Node.js, Python, and Ruby, as well as different container types for each language.
For more information on Elastic beanstalk, please visit the below URL:
• http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html

NEW QUESTION 9
You have been asked to de-risk deployments at your company. Specifically, the CEO is concerned about outages that occur because of accidental inconsistencies between Staging and Production, which sometimes cause unexpected behaviors in Production even when Staging tests pass. You already use Docker to get high consistency between Staging and Production for the application environment on your EC2 instances. How do you further de-risk the rest of the execution environment, since in AWS, there are many service components you may use beyond EC2 virtual machines?

• A. Develop models of your entire cloud system in CloudFormatio
• B. Use this model in Staging and Production to achieve greater parit
• C. */
• D. Use AWS Config to force the Staging and Production stacks to have configuration parit
• E. Any differences will be detected for you so you are aware of risks.
• F. Use AMIs to ensure the whole machine, including the kernel of the virual machines, is consistent,since Docker uses Linux Container (LXC) technology, and we need to make sure the container environment is consistent.
• G. Use AWS ECS and Docker clusterin
• H. This will make sure that the AMIs and machine sizes are the same across both environments.

Answer: A

Explanation:
After you have your stacks and resources set up, you can reuse your templates to replicate your infrastructure in multiple environments. For example, you can create environments for development, testing, and production so that you can test changes before implementing them into production. To make templates reusable, use the parameters, mappings, and conditions sections so that you can customize your stacks when you create them. For example, for your development environments, you can specify a lower-cost instance type compared to your production environment, but all other configurations and settings remain the same
For more information on Cloudformation best practices please refer to the below link: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/best-practices.html

NEW QUESTION 10
You've created a Cloudformation template as per your team's requets which is required for testing an application. By there is a request that when the stack is deleted, that the database is preserved for future reference. How can you achieve this using Cloudformation?

• A. Ensurethat the RDS is created with Read Replica's so that the Read Replica remainsafter the stack is torn down.
• B. IntheAWSCIoudFormation template, set the DeletionPolicy of theAWS::RDS::DBInstance'sDeletionPolicy property to "Retain."
• C. Inthe AWS CloudFormation template, set the WaitPolicy of the AWS::RDS::DBInstance'sWaitPolicy property to "Retain."
• D. Inthe AWS CloudFormation template, set the AWS::RDS::DBInstance'sDBInstanceClassproperty to be read-only.

Answer: B

Explanation:
With the Deletion Policy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS Cloud Formation deletes the resource by default. Note that this capability also applies to update operations that lead to resources being removed.
For more information on Cloudformation Deletion policy, please visit the below URL:
◆ http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html

NEW QUESTION 11
You need to deploy a new application version to production. Because the deployment is high-risk, you need to roll the new version out to users over a number of hours, to make sure everything is working correctly. You need to be able to control the proportion of users seeing the new version of the application down to the percentage point. You use ELB and EC2 with Auto Scaling Groups and custom AMIs with your code pre-installed assigned to Launch Configurations. There are no data base- level changes during your deployment. You have been told you cannot spend too much money, so you must not increase the number of EC2 instances much at all during the deployment, but you also need to be able to switch back to the original version of code quickly if something goes wrong. What is the best way to meet these requirements?

• A. Create a second ELB, Auto Scaling Launch Configuration, and Auto Scaling Group using the Launch Configuratio
• B. Create AMIs with all code pre-installe
• C. Assign the new AMI to the second Auto Scaling Launch Configuratio
• D. Use Route53 Weighted Round Robin Records to adjust the proportion of traffic hitting the two ELBs.S
• E. Use the Blue-Green deployment method to enable the fastest possible rollback if neede
• F. Create a full second stack of instances and cut the DNS over to the new stack of instances, and change the DNS back if a rollback is needed.
• G. Create AMIs with all code pre-installe
• H. Assign the new AMI to the Auto Scaling Launch Configuration, to replace the old on
• I. Gradually terminate instances running the old code (launched with the old Launch Configuration) and allow the new AMIs to boot to adjust the traffic balance to the new cod
• J. On rollback, reverse the process by doing the same thing, but changing the AMI on the Launch Config back to the original code.
• K. Migrate to use AWS Elastic Beanstal
• L. Use the established and well-tested Rolling Deployment setting AWS provides on the new Application Environment, publishing a zip bundle of the new code and adjusting the wait period to spread the deployment over tim
• M. Re-deploy the old code bundle to rollback if needed.

Answer: A

Explanation:
This is an example of a Blue Green Deployment
You can shift traffic all at once or you can do a weighted distribution. With Amazon Route 53, you can define a percentage of traffic to go to the green environment and gradually update the weights until the green environment carries the full production traffic. A weighted distribution provides the ability to perform canary analysis where a small percentage of production traffic is introduced to a new environment. You can test the new code and monitor for errors, limiting the blast radius if any issues are encountered. It also allows the green environment to scale out to support the full production load if you're using Elastic Load Balancing

For more information on Blue Green Deployments, please visit the below URL:
• https://dOawsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf

NEW QUESTION 12
Which of the following is false when it comes to using the Elastic Load balancer with Opsworks stacks?

• A. Youcan attach only one load balancer to a layer.
• B. A Classic Load Balancer can span across AWSOpsWorks Stacks layers.
• C. Eachload balancer can handle only one layer.
• D. Youneed to create the load balancer before hand and then attach it to the Opsworkstack.

Answer: B

Explanation:
The AWS Documentation mentions the following
To use Clastic Load Balancing with a stack, you must first create one or more load balancers in the same region by using the Clastic Load Balancing console, CLI, or API. You should be aware of the following:
You can attach only one load balancer to a layer. Cach load balancer can handle only one layer.
AWS OpsWorks Stacks does not support Application Load Balancer. You can only use Classic Load Balancer with AWS OpsWorks Stacks. For more information on Clastic Load Balancer with Opswork,
please visit the below url http://docs.aws.a mazon.com/opsworks/latest/userguide/layers-elb.html

NEW QUESTION 13
Your company has a number of Cloudformation stacks defined in AWS. As part of the routine housekeeping activity, a number of stacks have been targeted for deletion. But a few of the stacks are not getting deleted and are failing when you are trying to delete them. Which of the following could be valid reasons for this? Choose 2 answers from the options given below

• A. Thestacks were created with the wrong template versio
• B. Since the standardtemplate version is now higher, it is preventing the deletion of the stacks.You need to contact AWS support.
• C. Thestack has an S3 bucket defined which has objects present in it.
• D. Thestack has a EC2 Security Group which has EC2 Instances attached to it.
• E. Thestack consists of an EC2 resource which was created with a custom AMI.

Answer: BC

Explanation:
The AWS documentation mentions the below point
Some resources must be empty before they can be deleted. For example, you must delete all objects in an Amazon S3 bucket or remove all instances in an Amazon
CC2 security group before you can delete the bucket or security group
For more information on troubleshooting cloudformation stacks, please visit the below URL:
• http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/troubleshooting.html

NEW QUESTION 14
You have configured the following AWS services in your organization - Auto Scalinggroup, Elastic Load Balancer, and EC2 instances. You have been requested to terminate an instance from the Autoscaling Group when the CPU utilization is less than 30%. How can you achieve this.

• A. Createa Cloud Watch alarm to send a notification to SQ
• B. SQS can then remove oneinstance from the Autoscaling Group.
• C. Createa CloudWatch alarm to send a notification to the Auto Scalinggroup when theaggregated CPU utilization is less than 30% and configure the Auto Scalingpolicy to remove one instance.
• D. Createa CloudWatch alarm to send a notification to the EL
• E. The ELB can then removeone instance from the Autoscaling Group.
• F. Createa CloudWatch alarm to send a notification to the admin tea
• G. The admin team canthen manually terminate an instance from the Autnsraline Groun.

Answer: B

Explanation:
The AWS Documentation mentions the following
You should have two policies, one for scaling in (terminating instances) and one for scaling out (launching instances), for each event to monitor. For example, if you want to scale out when the network bandwidth reaches a certain level, create a policy specifying that Auto Scaling should start a certain number of instances to help with your traffic. But you may also want an accompanying policy to scale in by a certain number when the network bandwidth level goes back down
For more information on the scaling plans, please see the below link: http://docs.aws.amazon.com/autoscaling/latest/userguide/sca I ing_plan.htmI

NEW QUESTION 15
You are a Devops Engineer for your company. Your company is using Opswork stack to rollout a collection of web instances. When the instances are launched, a configuration file need to be setup prior to the launching of the web application hosted on these instances. Which of the following steps would you carry out to ensure this requirement gets fulfilled. Choose 2 answers from the options given below

• A. Ensure that the Opswork stack is changed to use the AWS specific cookbooks
• B. Ensure that the Opswork stack is changed to use custom cookbooks
• C. Configure a recipe which sets the configuration file and add it to the ConfigureLifeCycle Event of the specific web layer.
• D. Configure a recipe which sets the configuration file and add it to the Deploy LifeCycleEvent of the specific web layer.

Answer: BC

Explanation:
This is mentioned in the AWS documentation Configure
This event occurs on all of the stack's instances when one of the following occurs:
• An instance enters or leaves the online state.
• You associate an Elastic IP address with an instance or disassociate one from an instance.
• You attach an Elastic Load Balancing load balancer to a layer, or detach one from a layer.
For example, suppose that your stack has instances A, B, and C, and you start a new instance, D. After D has finished running its setup recipes, AWS OpsWorks Stacks triggers the Configure event on A, B, C, and D. If you subsequently stop A, AWS Ops Works Stacks triggers the Configure event on B, C, and
D. AWS OpsWorks Stacks responds to the Configure event by running each layer's Configure recipes, which update the instances' configuration to reflect the current set of online instances. The Configure event is therefore a good time to regenerate configuration files. For example, the HAProxy Configure recipes reconfigure the load balancer to accommodate any changes in the set of online application server instances.
You can also manually trigger the Configure event by using the Configure stack command. For more information on Opswork lifecycle events, please refer to the below URL:
• http://docs.aws.a mazon.com/opsworks/latest/userguide/workingcookbook-events.htm I

NEW QUESTION 16
Which of the following features of the Elastic Beanstalk service will allow you to perform a Blue Green Deployment

• A. Rebuild Environment
• B. Swap Environment
• C. Swap URL's
• D. Environment Configuration

Answer: C

Explanation:
With the Swap url feature, you can keep a version of your environment ready. And when you are ready to cut over, you can just use the swap url feature to switch over
to your new environment
For more information on swap url feature, please refer to the below link:
• http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.CNAMCSwap.html

NEW QUESTION 17
Which of the following can be configured as targets for Cloudwatch Events. Choose 3 answers from
the options given below

• A. AmazonEC2 Instances
• B. AWSLambda Functions
• C. AmazonCodeCommit
• D. AmazonECS Tasks

Answer: ABD

Explanation:
The AWS Documentation mentions the below
You can configure the following AWS sen/ices as targets for Cloud Watch Events

For more information on Cloudwatch events please see the below link:
• http://docs.aws.amazon.com/AmazonCloudWatch/latest/events/WhatlsCloudWatchEvents.htmI

NEW QUESTION 18
You are designing a system which needs, at a minimum, 8 m4.large instances operating to service traffic. When designing a system for high availability in the us-east-1 region, which has 6 Availability Zones, your company needs to be able to handle the death of a full availability zone. How should you distribute the servers, to save as much cost as possible, assuming all of the EC2 nodes are properly linked to an ELB? Your VPC account can utilize us-east-1's AZ's a through f, inclusive.

• A. 3 servers in each of AZ's a through d, inclusiv
• B. 8 servers in each of AZ's a and b.
• C. 2 servers in each of AZ's a through e, inclusive.
• D. 4 servers in each of AZ's a through conclusive.

Answer: C

Explanation:
The best way is to distribute the instances across multiple AZ's to get the best and avoid a disaster scenario. With this scenario, you will always a minimum of more than 8 servers even if one AZ were to go down. Even though A and D are also valid options, the best option when it comes to distribution is Option C. For more information on High Availability and Fault tolerance, please refer to the below link:
https://media.amazonwebservices.com/architecturecenter/AWS_ac_ra_ftha_04.pdf

NEW QUESTION 19
You are planning on using AWS Code Deploy in your AWS environment. Which of the below features of AWS Code Deploy can be used to Specify scripts to be run on each instance at various stages of the deployment process

• A. AppSpecfile
• B. CodeDeployfile
• C. Configfile
• D. Deploy file

Answer: A

Explanation:
The AWS Documentation mentions the following on AWS Code Deploy
An application specification file (AppSpec file), which is unique to AWS CodeDeploy, is a YAML- formatted file used to:
Map the source files in your application revision to their destinations on the instance. Specify custom permissions for deployed files.
Specify scripts to be run on each instance at various stages of the deployment process. For more information on AWS CodeDeploy, please refer to the URL: http://docs.aws.amazon.com/codedeploy/latest/userguide/application-specification-files.htmI

NEW QUESTION 20
You have been given a business requirement to retain log files for your application for 10 years. You need to regularly retrieve the most recent logs for troubleshooting. Your logging system must be cost-effective, given the large volume of logs. What technique should you use to meet these requirements?

• A. Store your log in Amazon CloudWatch Logs.
• B. Store your logs in Amazon Glacier.
• C. Store your logs in Amazon S3, and use lifecycle policies to archive to Amazon Glacier.
• D. Store your logs on Amazon EBS, and use Amazon EBS snapshots to archive them.

Answer: C

Explanation:
Option A is invalid, because cloud watch will not store the logs indefinitely and secondly it won't be the cost effective option.
Option B is invalid, because it won't server the purpose of regularly retrieve the most recent logs for troubleshooting. You will need to pay more to retrieve the logs faster from this storage.
Option D is invalid, because it is not an ideal or cost effective option.
You can define lifecycle configuration rules for objects that have a well-defined lifecycle. For example: if you are uploading periodic logs to your bucket, your application might need these logs for a week or a month after creation, and after that you might want to delete them.
Some documents are frequently accessed for a limited period of time. After that, these documents are less frequently accessed. Over time, you might not need real-time access to these objects, but your organization or regulations might require you to archive them for a longer period and then optionally delete them later.
You might also upload some types of data to Amazon S3 primarily for archival purposes, for example digital media archives, financial and healthcare records, raw genomics sequence data, long-term database backups, and data that must be retained for regulatory compliance.
For more information on Lifecycle management please refer to the below link: http://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.htmI
Note:
Option C is the cheapest option, but Cloud watch can store logs indefinetly or between 10 years and
one day.
"Log Retention—By default, logs are kept indefinitely and never expire. You can adjust the retention policy for each log group, keeping the indefinite retention, or
choosing a retention periods between 10 years and one day." https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/WhatlsCloudWatchLogs.html

NEW QUESTION 21
......