2019年aws的sap专业架构师考试题库英文版_Amazonsap考试步骤资源-CSDN文库

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QUESTION 1

You've been brought in as solutions architect to assist an enterprise customer with their migration of

an e-commerce platform to Amazon Virtual Private Cloud (VPC).

The previous architect has already deployed a 3-tier VPC. The

configuration is as follows:

VPC: vpc-2f8bc447

IGW: igw-2d8bc445

NACL: ad-208bc448

Subnets and Route Tables: Web

servers: subnet-258bc44d

Application servers: subnet-248bc44c

Database servers: subnet-9189c6f9 Route

Tables:

rtb-218bc449

rtb-238bc44b

Associations:

subnet-258bc44d : rtb-218bc449

subnet-248bc44c : rtb-238bc44b

subnet-9189c6f9 : rtb-238bc44b

You are now ready to begin deploying EC2 instances into the VPC. Web servers must have direct

access to the Internet. Application and database servers cannot have direct access to the Internet.

Which configuration below will allow you the ability to remotely administer your application and

database servers, as well as allow these servers to retrieve updates from the Internet?

Create a bastion and NAT instance in subnet-258bc44d, and add a route from rtb-238bc44b to

the NAT instance.整个题库只有此选项出现2个NAT

Add a route from rtb-238bc44b to igw-2d8bc445 and add a bastion and NAT instance within

subnet-248bc44c.

Create a bastion and NAT instance in subnet-248bc44c, and add a route from rtb-238bc44b to

subnet-258bc44d.

Create a bastion and NAT instance in subnet-258bc44d, add a route from rtb-238bc44b to

Igw-2d8bc445, and a new NACL that allows access between subnet-258bc44d and subnet-

248bc44c.

Answer: A

QUESTION 2

You are designing the network infrastructure for an application server in Amazon VPC. Users will

access all the application instances from the Internet, as well as from an on-premises network.

The on-premises network is connected to your VPC over an AWS Direct Connect link. How

would you design routing to meet the above requirements?

Configure a single routing table with a default route via the Internet gateway. Propagate a

default route via BGP on the AWS Direct Connect customer router. Associate the routing

table with all VPC subnets.

Configure a single routing table with a default route via the Internet gateway.

Propagate specific routes for the on-premises networks出现就选via BGP on the AWS Direct Connect

customer router. Associate the routing table with all VPC subnets.

Configure two routing tables: one that has a default route via the Internet gateway, and another that has a

default route via the VPN gateway.

Associate both routing tables with each VPC subnet.

Configure a single routing table with two default routes: one to the Internet via an Internet gateway, the

other to the on-premises network via the VPN gateway.

Use this routing table across all subnets in your VPC.

Answer: B

QUESTION 3

Within the IAM service a GROUP is regarded as a:

A collection of AWS accounts

It's the group of EC2 machines that gain the permissions specified in the GROUP.

There's no GROUP in IAM, but only USERS and RESOURCES.

A collection of users.

Answer: D

QUESTION 4

Amazon EC2 provides a repository of public data sets that can be seamlessly integrated into AWS

cloud-based applications.

What is the monthly charge for using the public data sets?

A 1 time charge of 10$ for all the datasets.

1$ per dataset per month

10$ per month for all the datasets

There is no charge for using the public data sets整个题库只有此题有10$，选择不需要花钱的选项

Answer: D

QUESTION 5

In the Amazon RDS Oracle DB engine, the Database Diagnostic Pack and the Database Tuning

Pack are only available with oracle Enterprise Edition

QUESTION 6

You have deployed a web application, targeting a global audience across multiple AWS Regions

under the domain name example.com.

You decide to use Route53 Latency-Based Routing to serve web requests to users from the

region closest to the user. To provide business continuity in the event of server downtime you

configure weighted record sets associated with two web servers in separate Availability Zones

per region. During a DR test you notice that when you disable all web servers in one of the

regions Route53 does not automatically direct all users to the other region.

What could be happening? Choose 2 answers

You did not set "Evaluate Target Health" to 'Yes"出现就选 on the latency alias resource

record set associated with example.com in the region where you disabled the servers

The value of the weight associated with the latency alias resource record set in the region with

the disabled servers is higher than the weight for the other region

One of the two working web servers in the other region did not pass its HTTP health check

Latency resource record sets cannot be used in combination with weighted resource record sets

关键词You did not setup an HTTP health check for one or more of the weighted resource

record sets associated with the disabled web servers

Answer: AE

QUESTION 7

An international company has deployed a multi-tier web application that relies on DynamoDB in a

single region. For regulatory reasons they need disaster recovery capability in a separate region

with a Recovery Time Objective of 2 hours and a Recovery Point Objective of 24 hours. They

should synchronize their data on a regular basis and be able to provision the web application

rapidly using CloudFormation.

The objective is to minimize changes to the existing web application, control the throughput of

DynamoDB used for the synchronization of data, and synchronize only the modified elements.

Which design would you choose to meet these requirements?

Use AWS Data Pipeline to schedule a DynamoDB cross region copy once a day, create a

"LastUpdated出现就选" attribute in your DynamoDB table that would represent the timestamp of

the last update and use it as a filter

Use AWS Data Pipeline to schedule an export of the DynamoDB table to S3 in the current region

once a day, then schedule another task Immediately after it that will import data from S3 to

DynamoDB in the other region

Use EMR and write a custom script to retrieve data from DynamoDB in the current region using a

SCAN operation and push it to DynamoDB in the second region

Send also each write into an SQS queue in the second region, use an auto-scaling group behind

the SQS queue to replay the write in the second region

Answer: A

QUESTION 8

Your company currently has a 2-tier web application running in an on-premises data center.

You have experienced several infrastructure failures in the past few months resulting in significant

financial losses. Your CIO is strongly considering moving the application to AWS. While working

on achieving buy-In from the other company executives, he asks you to develop a disaster

recovery plan to help improve business continuity in the short term. He specifies a target

Recovery Time Objective (RTO) of 4 hours and a Recovery Point Objective (RPO) of 1 hour or

less. He also asks you to implement the solution within 2 weeks.

Your database is 200GB in size and you have a 20Mbps Internet connection.

How would you do this while minimizing costs?

Create an EBS backed private AMI which includes a fresh install of your application.

Develop a CloudFormation template which includes your AMI and the required EC2, AutoScaling,

and ELB resources to support deploying the application across Multiple-Availability-Zones出现就

选. Asynchronously replicate transactions from your on-premises database to a database instance

in AWS across a secure VPN connection.

Deploy your application on EC2 instances within an Auto Scaling group across multiple

availability zones. Asynchronously replicate transactions from your on-premises database to a

database instance in AWS across a secure VPN connection.

Create an EBS backed private AMI which includes a fresh install of your application.

Setup a script in your data center to backup the local database every 1 hour and to encrypt and

copy the resulting file to an S3 bucket using multi-part upload.

Install your application on a compute-optimized EC2 instance capable of supporting the

application's average load.

Synchronously replicate transactions from your on-premises database to a database instance in

AWS across a secure Direct Connect connection.

Answer: A

QUESTION 9

You would like to create a mirror image of your production environment in another region for

disaster recovery purposes.

Which of the following AWS resources do not need to be recreated in the second region? Choose

2 answers

Route S3 Record Sets出现就选

Launch Configurations

EC2 Key Pairs

Security Groups

IAM Roles选项单独出现就选

Elastic IP Addresses (EIP)

Answer: AE

QUESTION 10

Your startup wants to implement an order fulfillment process for selling a personalized gadget

that needs an average of 3-4 days to produce with some orders taking up to 6 months.

You expect 10 orders per day on your first day, 1000 orders per day after 6 months and 10,000

orders after 12 months. Orders coming in are checked for consistency, then dispatched to your

manufacturing plant for production, quality control, packaging, shipment and payment processing.

If the product does not meet the quality standards at any stage of the process, employees may

force the process to repeat a step. Customers are notified via email about order status and any

critical issues with their orders such as payment failure.

Your base architecture includes AWS Elastic Beanstalk for your website with an RDS MySQL

instance for customer data and orders.

How can you implement the order fulfillment process while making sure that the emails are

delivered reliably?

Add a business process management application to your Elastic Beanstalk app servers and re-

use the RDS database for tracking order status.

Use one of the Elastic Beanstalk instances to send emails to customers.

Use SWF with an Auto Scaling group of activity workers and a decider instance in another Auto

Scaling group with min/max=1.

Use SES to send emails to customers. 结合出现就选

Use an SQS queue to manage all process tasks. Use an Auto Scaling group of EC2 instances

that poll the tasks and execute them.

Use SES to send emails to customers.

Use SWF with an Auto Scaling group of activity workers and a decider instance in another Auto

Scaling group with min/max=1.

Use the decider instance to send emails to customers.

Answer: B

QUESTION 11

Your company runs a customer facing event registration site. This site is built with a 3-tier

architecture with web and application tier servers and a MySQL database. The application

requires 6 web tier servers and 6 application tier servers for normal operation, but can run on a

minimum of 65% server capacity and a single MySQL database.

When deploying this application in a region with three availability zones (AZs), which

architecture provides high availability?

A web tier deployed across 2 AZs with 3 EC2 (Elastic Compute Cloud) instances in each A2

inside an Auto Scaling Group behind an ELB (elastic load balancer), and an application tier

deployed across 2 AZs with 3 EC2 instances In each AZ inside an Auto Scaling Group behind an

ELB, and one RDS (Relational Database Service) instance deployed with read replicas in the

other AZ.

A web tier deployed across 3 AZs with 2 EC2 结合出现就选 (Elastic Compute Cloud) instances in

each A

inside an Auto Scaling Group behind an ELB (elastic load balancer), and an application tier

deployed across 3 AZs with 2 EC2 instances In each AZ inside an Auto Scaling Group behind an

ELB, and a Multi-AZ RDS (Relational Database Service) deployment.

A web tier deployed across 2 AZs with 3 EC2 (Elastic Compute Cloud) instances in each AZ

inside an Auto Scaling Group behind an ELB (elastic load balancer), and an application tier

deployed across 2 AZs with 3 EC2 instances in each AZ inside an Auto Scaling Group behind an

ELB, and a Multi-AZ RDS (Relational Database Service) deployment

A web tier deployed across 3 AZs with 2 EC2 (Elastic Compute Cloud) instances in each AZ inside

an Auto Scaling Group behind an ELB (elastic load balancer), and an application tier deployed

across 3 AZs with 2 EC2 instances in each AZ inside an Auto Scaling Group behind an ELB, and

one RDS (Relational Database Service) instance deployed with read replicas in the two other AZs.

Answer: B

QUESTION 12

Your application is using an ELB in front of an Auto Scaling group of web/application servers

deployed across two AZs and a Multi-AZ RDS Instance for data persistence. The database CPU

is often above 80% usage and 90% of I/O operations on the database are reads. To improve

performance you recently added a single-node Memcached ElastiCache Cluster to cache

frequent DB query results. In the next weeks the overall workload is expected to grow by 30%.

Do you need to change anything in the architecture to maintain the high availability of the

application with the anticipated additional load? Why

Yes, you should deploy two Memcached ElastiCache Clusters in different AZs because the RDS

instance will not be able to handle the load if the cache node fails. Cpu超过80-90%，需要选择避免

出现fails，部署不同的AZ

No, if the cache node fails you can always get the same data from the DB without having any

availability impact.

No, if the cache node fails the automated ElastiCache node recovery feature will prevent any

availability impact.

Yes, you should deploy the Memcached ElastiCache Cluster with two nodes in the same AZ as the

RDS DB master instance to handle the load if one cache node fails.

Answer: A

QUESTION 13

An ERP application is deployed across multiple AZs in a single region. In the event of failure, the

Recovery Time Objective (RTO) must be less than 3 hours, and the Recovery Point Objective

(RPO) must be 15 minutes. The customer realizes that data corruption occurred roughly 1.5

hours ago. What DR strategy could be used to achieve this RTO and RPO in the event of this kind

of failure?

Take 15 minute DB backups stored in Glacier with transaction logs stored in S3 every 5 minutes.

Use synchronous database master-slave replication between two availability zones.

Take hourly DB backups to EC2 instance store volumes with transaction logs stored In S3 every 5

minutes.

Take hourly DB backups to S3, with transaction logs stored in S3 every 5 minutes. 需要1.5小时数据的恢

复，所以一小时单位备份，并每5分钟log备份

Answer: D

QUESTION 14

Refer to the architecture diagram above of a batch processing solution using Simple Queue

Service (SQS) to set up a message queue between EC2 instances which are used as batch

processors. CloudWatch monitors the number of job requests (queued messages) and an Auto

Scaling group adds or deletes batch servers automatically based on parameters set in

CloudWatch alarms.

You can use this architecture to implement which of the following features in a cost effective and

efficient manner?

A. Coordinate‘协调’出现就选 number of EC2 instances with number of Job requests automatically, thus improving cost

effectiveness.

Reduce the overall time for executing Jobs through parallel processing by allowing a busy EC2 instance that

receives a message to pass it to the next instance in a daisy-chain setup.

Implement fault tolerance against EC2 instance failure since messages would remain in SQS and work can

continue with recovery of EC2 instances.

Implement fault tolerance against SQS failure by backing up messages to S3.

Handle high priority Jobs before lower priority Jobs by assigning a priority metadata field to SQS messages.

Implement message passing between EC2 instances within a batch by exchanging messages through SQS.

Answer: A

QUESTION 15

Your system recently experienced down time. During the troubleshooting process you found that

a new administrator mistakenly terminated several production EC2 instances.

Which of the following strategies will help prevent a similar situation in the future?

The administrator still must be able to:

- launch, start, stop, and terminate development resources,

- launch and start production instances.

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