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作者帖子
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小菲喵参与者
请大神给出建议选项和解释,非常感谢!!
QUESTION 59
A Solutions Architect needs to use AWS to implement pilot light disaster recovery for a three-tier web application hosted in an on-premises datacenter.
Which solution allows rapid provision of working, fully-scaled production environment?
A. Continuously replicate the production database server to Amazon RDS.
Use AWS CloudFormation to deploy the application and any additional servers if necessary.
B. Continuously replicate the production database server to Amazon RDS.
Create one application load balancer and register on-premises servers.
Configure ELB Application Load Balancer to automatically deploy Amazon EC2 instances for application and additional servers if the on-premises application is down.
C. Use a scheduled Lambda function to replicate the production database to AWS.
Use Amazon Route 53 health checks to deploy the application automatically to Amazon S3 if production is unhealthy.
D. Use a scheduled Lambda function to replicate the production database to AWS.
Register on-premises servers to an Auto Scaling group and deploy the application and additional servers if production is unavailable.QUESTION 64
An organization has a long-running image processing application that runs on Spot Instances that will be terminated when interrupted. A highly available workload must be designed to respond to Spot Instance interruption notices. The solution must include a two-minute warning when there is not enough
capacity.
How can these requirements be met?
A. Use Amazon CloudWatch Events to invoke an AWS Lambda function that can launch On-Demand Instances.
B. Regularly store data from the application on Amazon DynamoDB. Increase the maximum number of instances in the AWS Auto Scaling group.
C. Manually place a bid for additional Spot Instances at a higher price in the same AWS Region and Availability Zone.
D. Ensure that the Amazon Machine Image associated with the application has the latest configurations for the launch configuration.QUESTION 71
A Solutions Architect is designing a solution to monitor weather changes by the minute. The frontend application is hosted on Amazon EC2 instances. The
backend must be scalable to a virtually unlimited size, and data retrieval must occur with minimal latency.
Which AWS service should the Architect use to store the data and achieve these requirements?
A. Amazon S3
B. Amazon DynamoDB
C. Amazon RDS
D. Amazon EBSQUESTION 82
An online company wants to conduct real-time sentiment analysis about its products from its social media channels using SQL.
Which of the following solutions has the LOWEST cost and operational burden?
A. Set up a streaming data ingestion application on Amazon EC2 and connect it to a Hadoop cluster for data processing. Send the output to Amazon S3 and use Amazon Athena to analyze the data.
B. Configure the input stream using Amazon Kinesis Data Streams. Use Amazon Kinesis Data Analytics to write SQL queries against the stream.
C. Configure the input stream using Amazon Kinesis Data Streams. Use Amazon Kinesis Data Firehose to send data to an Amazon Redshift cluster, andthen query directly against Amazon Redshift
D. Set up streaming data ingestion application on Amazon EC2 and send the output to Amazon S3 using Kinesis Data Firehose. Use Athena to analyze the
data.QUESTION 87
A company wants to durably store data in 8 KB chunks. The company will access the data once every few months. However, when the company does access
the data, it must be done with as little latency as possible.
Which AWS service should a Solutions Architect recommend if cost is NOT a factor?
A. Amazon DynamoDB
B. Amazon EBS Throughput Optimized HDD Volumes
C. Amazon EBS Cold HDD Volumes
D. Amazon ElastiCacheQUESTION 94
A Solutions Architect is designing a solution that will include a database in Amazon RDS. Corporate security policy mandates that the database, its logs, and
its backups are all encrypted.
Which is the MOST efficient option to fulfill the security policy using Amazon RDS?
A. Launch an Amazon RDS instance with encryption enabled. Enable encryption for logs and backups.
B. Launch an Amazon RDS instance. Enable encryption for database, logs and backups.
C. Launch an Amazon RDS instance with encryption enabled. Logs and backups are automatically encrypted.
D. Launch an Amazon RDS instance. Enable encryption for backups. Encrypt logs with a database-engine feature.QUESTION 109
A customer owns a MySQL database that is accessed by various clients who expect, at most, 100 ms latency on requests. Once a record is stored in the database, it rarely changed. Clients only access one record at a time.
Database access has been increasing exponentially due to increased client demand. The resultant load will soon exceed the capacity of the most expensive hardware available for purchase. The customer wants to migrate to AWS, and is willing to change database systems.
Which service would alleviate the database load issue and offer virtually unlimited scalability for the future?
A. Amazon RDS
B. Amazon DynamoDB
C. Amazon Redshift
D. AWS Data Pipeline -
anthonyhenry参与者
同是学员,抛砖,按目前理解:
59: B ? – 这个老师之前解释过,不过总觉得ELB不能单独实现instance的自动部署,请老师指点
64: A ? – A感觉至少可行,不确定是不是最佳方案。
71: B S3和DynamoDB 中后者能保证延时
82: B
87: a
94: c
109: b
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小菲喵参与者
谢谢上面同学的回复!
刚看到其他帖子上老师说要加上自己初步分析,所以在回复中补充进自己的分析和疑惑。
QUESTION 59
A Solutions Architect needs to use AWS to implement pilot light disaster recovery for a three-tier web application hosted in an on-premises datacenter.
Which solution allows rapid provision of working, fully-scaled production environment?
A. Continuously replicate the production database server to Amazon RDS.
Use AWS CloudFormation to deploy the application and any additional servers if necessary.
B. Continuously replicate the production database server to Amazon RDS.
Create one application load balancer and register on-premises servers.
Configure ELB Application Load Balancer to automatically deploy Amazon EC2 instances for application and additional servers if the on-premises application is down.
C. Use a scheduled Lambda function to replicate the production database to AWS.
Use Amazon Route 53 health checks to deploy the application automatically to Amazon S3 if production is unhealthy.
D. Use a scheduled Lambda function to replicate the production database to AWS.
Register on-premises servers to an Auto Scaling group and deploy the application and additional servers if production is unavailable.Answer: A or B? CloadFormation在题干中不知道是怎么对应上的,B是可行的但实现起来较A复杂。
QUESTION 64
An organization has a long-running image processing application that runs on Spot Instances that will be terminated when interrupted. A highly available workload must be designed to respond to Spot Instance interruption notices. The solution must include a two-minute warning when there is not enough
capacity.
How can these requirements be met?
A. Use Amazon CloudWatch Events to invoke an AWS Lambda function that can launch On-Demand Instances.
B. Regularly store data from the application on Amazon DynamoDB. Increase the maximum number of instances in the AWS Auto Scaling group.
C. Manually place a bid for additional Spot Instances at a higher price in the same AWS Region and Availability Zone.
D. Ensure that the Amazon Machine Image associated with the application has the latest configurations for the launch configuration.Answer: A? 其他三个选项似乎都不太合适。
QUESTION 71
A Solutions Architect is designing a solution to monitor weather changes by the minute. The frontend application is hosted on Amazon EC2 instances. The
backend must be scalable to a virtually unlimited size, and data retrieval must occur with minimal latency.
Which AWS service should the Architect use to store the data and achieve these requirements?
A. Amazon S3
B. Amazon DynamoDB
C. Amazon RDS
D. Amazon EBSAnswer: B or C? weather changes题干中看不出是需要关系or非关系型,但是看了上面同学说的DynamoDB可保证低延时,不知为什么不应是RDS?
QUESTION 82
An online company wants to conduct real-time sentiment analysis about its products from its social media channels using SQL.
Which of the following solutions has the LOWEST cost and operational burden?
A. Set up a streaming data ingestion application on Amazon EC2 and connect it to a Hadoop cluster for data processing. Send the output to Amazon S3 and use Amazon Athena to analyze the data.
B. Configure the input stream using Amazon Kinesis Data Streams. Use Amazon Kinesis Data Analytics to write SQL queries against the stream.
C. Configure the input stream using Amazon Kinesis Data Streams. Use Amazon Kinesis Data Firehose to send data to an Amazon Redshift cluster, andthen query directly against Amazon Redshift
D. Set up streaming data ingestion application on Amazon EC2 and send the output to Amazon S3 using Kinesis Data Firehose. Use Athena to analyze the
data.Answer: B or C?题干中有analysis不知为什么不选C redshift.
QUESTION 87
A company wants to durably store data in 8 KB chunks. The company will access the data once every few months. However, when the company does access
the data, it must be done with as little latency as possible.
Which AWS service should a Solutions Architect recommend if cost is NOT a factor?
A. Amazon DynamoDB
B. Amazon EBS Throughput Optimized HDD Volumes
C. Amazon EBS Cold HDD Volumes
D. Amazon ElastiCacheAnswer: A? 是因为几个选项中DynamoDB有最低延时?
QUESTION 94
A Solutions Architect is designing a solution that will include a database in Amazon RDS. Corporate security policy mandates that the database, its logs, and
its backups are all encrypted.
Which is the MOST efficient option to fulfill the security policy using Amazon RDS?
A. Launch an Amazon RDS instance with encryption enabled. Enable encryption for logs and backups.
B. Launch an Amazon RDS instance. Enable encryption for database, logs and backups.
C. Launch an Amazon RDS instance with encryption enabled. Logs and backups are automatically encrypted.
D. Launch an Amazon RDS instance. Enable encryption for backups. Encrypt logs with a database-engine feature.Answer: A or C? Enable encryption不知道有没有自动加密log和backup这一说。
QUESTION 109
A customer owns a MySQL database that is accessed by various clients who expect, at most, 100 ms latency on requests. Once a record is stored in the database, it rarely changed. Clients only access one record at a time.
Database access has been increasing exponentially due to increased client demand. The resultant load will soon exceed the capacity of the most expensive hardware available for purchase. The customer wants to migrate to AWS, and is willing to change database systems.
Which service would alleviate the database load issue and offer virtually unlimited scalability for the future?
A. Amazon RDS
B. Amazon DynamoDB
C. Amazon Redshift
D. AWS Data PipelineAnswer: A or B? 题干中MySQL往AWS上迁移,感觉应该对应RDS,但不知道是不是因为“willing to change database systems”才选B的?
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挨踢小茶管理员
Q59. 这题老实讲我也不是很确定,A和B都很有道理。 又看了一下关于Pilot Light的定义和图示。因为是一种DR的设计,所以B选项用ELB来注册On-prem的服务器是利用了两边的服务了,严格来说不满足DR的前提。而且,DR的一个先觉条件是解决RTO问题(另一个RPO问题已经通过RDS数据复制解决了),正好可以利用Cloudformation快速部署的特点。
Q64. A。因为Spot可能会因为整个AZ的容量不够而终止(也可能会因为价格浮动),因此再增加更多的Spot没有什么意义,可以排除BC。
Q71. B了。RDS如果不是用Aurora的话,满足不了题目说的unlimited size。其次,DynamoDB可以做到低延迟,而且也是具有弹性的。
Q82. B,技术上来说BC都可以,但是C需要维护一个Redshift集群,不太满足lowest cost和operational burden呀。
Q87. A,低延迟。
Q94. C。参照:https://docs.aws.amazon.com/zh_cn/AmazonRDS/latest/UserGuide/Overview.Encryption.html
Q109. B。
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anthonyhenry参与者
感谢老师。也感谢其他同学码题上来。
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小菲喵参与者
感谢老师和同学!
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挨踢小茶管理员
各位如果顺利考过认证,记得回来发战报啊~嘿嘿
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