AWS Developer Associate: 快速掌握Elastic Beanstalk部署与RDS费用结构

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在AWS Developer Associate Lead2Pass文档中，包含了关于AWS开发人员认证的一些关键知识点。这些题目主要考察了AWS服务的使用和理解。首先，QUESTION101涉及的是AWS Elastic Beanstalk的部署过程。当使用AWS Elastic Beanstalk控制台部署新应用或应用版本时（选项C），用户需要上传一个源代码包（source bundle）。这是因为Elastic Beanstalk作为一个应用管理平台，允许开发者上传整个项目结构，而不是单独上传每个文件。这样做便于管理和自动部署，简化了配置和更新应用程序的流程。官方文档提供了进一步的指导（链接：http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.deployment.source.html）。接着，QUESTION102聚焦于AWS RDS（关系数据库服务）中的MySQL使用。用户在选择使用RDS MySQL时，需要考虑费用构成。其中，用户通常会支付数据传输费用（选项A）、数据存储成本（选项C）以及每月的I/O请求次数（选项D）。但是，监控（Cloudwatch metrics）是免费的，用户无需为此付费。这表明RDS在定价上是以使用量计费，而监控作为基础服务，不计入额外的计费项（链接：http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html）。最后，QUESTION103提到了EBS（弹性块存储）卷的快照操作。创建EBS卷快照意味着用户可以备份数据，但选项部分并未提供完整的句子，可能是让用户选择在创建快照时不会产生的费用。通常，快照操作本身并不产生额外费用，但如果涉及到快照恢复、存储快照或频繁创建快照，可能会有额外的存储成本或操作成本。这些题目涵盖了AWS开发人员在实际工作中常见的场景，包括应用部署、数据库服务费用结构以及存储管理，这些都是理解和准备AWS Developer Associate认证考试的重要知识点。通过学习和掌握这些概念，开发者能够更有效地利用AWS服务来构建和扩展他们的应用程序。

Answer:

C

Explanation:

WhenausercreatesanEBSvolume,theusercanattachittoarunninginstance.Theusercan

attachmultiplevolumestothesameinstanceandstripethemtogethertoincreasetheI/O.The

usercantakeasnapshotfromtheexistingvolumebutcannotcreateanAMIfromthevolume.

However,theusercancreateanAMIfromasnapshot.

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumes.html

QUESTION



111

AWSElasticBeanstalkstoresyourapplicationfilesandoptionallyserverlogfilesin_________.



AmazonStorageGateway



AmazonGlacier



AmazonEC2



AmazonS3

Answer:

D

Explanation:

AWSElasticBeanstalkstoresyourapplicationfilesandoptionallyserverlogfilesinAmazon S3.

IfyouareusingtheAWSManagementConsole,Git,theAWSToolkitforVisualStudio,orAWS

ToolkitforEclipse,anAmazonS3bucketwillbecreatedinyouraccountforyouandthefilesyou

uploadwillbeautomaticallycopiedfromyourlocalclienttoAmazonS3.Optionally, youmay

configureElasticBeanstalktocopyyourserverlogfileseveryhourtoAmazonS3.Youdothisby

editingtheenvironmentconfigurationsettings.

http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/AWSHowTo.html

QUESTION



112

TheAWS consoleforDynamoDBenablesyoutodoallthefollowingoperations,except:



Setupalarmstomonitoryourtable'scapacityusage.



Create,update,anddeletetables.



ImportDatafromotherdatabasesorfromfiles.



Viewyourtable'stopmonitoringmetricsonreal-timegraphsfromCloudWatch.

Answer:

C

Explanation:

TheAWS consoleforDynamoDBenablesyoutodoalltheaboveoperationbutnotImporting

Datafromotherdatabasesorfromfilesanditisnotpossibletodoit.

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ConsoleDynamoDB.html

QUESTION



113

Anorganizationhascreatedmultiplecomponentsofasingleapplicationfor

compartmentalization.CurrentlyallthecomponentsarehostedonasingleEC2instance.Dueto

securityreasonstheorganizationwantstoimplementtwoseparateSSLsfortheseparate

modulesalthoughitisalreadyusingVPC.Howcantheorganization achievethiswithasingle

instance?



Create=a=VPC=instance=which=will=have=both=the=ACL=and=the=security=group=attached=to=it=and

haveseparaterulesforeachIPaddress.



CreateaVPCinstancewhichwillhavemultiplenetworkinterfaceswithmultiple elasticIP

addresses.

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