Extinction Agenda Book 2 Chapter 3

55問 • 1年前

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A startup uses a fleet of Amazon EC2 servers to manage its CRM application. These Amazon EC2 servers are behind Elastic Load Balancing (ELB). Which of the following configurations are NOT allowed for Elastic Load Balancing?

Use the Elastic Load Balancing to distribute traffic for four Amazon EC2 instances. Two of these instances are deployed in Availability Zone A of us-east-1 region and the other two instances are deployed in Availability Zone B of us-west-1 region

A retail company's procurement application becomes slow when traffic spikes. The application has a three-tier architecture (web, application and database tier) that uses synchronous transactions. The engineering team at the company has identified certain bottlenecks in the application tier but it does not want to change the underlying application architecture. As a solutions architect, which of the following solutions would you suggest to meet the required application response times while accounting for any traffic spikes?

Leverage horizontal scaling for the web and application tiers by using Auto Scaling groups and Application Load Balancer

A healthcare company runs a fleet of Amazon EC2 instances in two private subnets (named PR1 and PR2) across two Availability Zones (AZs) named A1 and A2. The Amazon EC2 instances need access to the internet for operating system patch management and third-party software maintenance. To facilitate this, the engineering team at the company wants to set up two Network Address Translation gateways (NAT gateways) in a highly available configuration. Which of the following options would you suggest?

Set up a total of two NAT gateways. NAT gateway N1 should be set up in public subnet PU1 in Availability Zone A1. NAT gateway N2 should be set up in public subnet PU2 in Availability Zone A2

The engineering team at an e-commerce company wants to set up a custom domain for internal usage such as internaldomainexample.com. The team wants to use the private hosted zones feature of Amazon Route 53 to accomplish this. Which of the following settings of the VPC need to be enabled? (Select two)

enableDnsHostnames, enableDnsSupport

What is a primary difference between EFS and EBS storage in AWS?

EFS storage can be shared across regions and EBS cannot

How long are one-minute data points maintained for viewing in Amazon CloudWatch?

15 days

What is the solution for logging actions taken within the AWS cloud, such as creating resources, deleting resources, and reconfiguring resources?

CloudTrail

At the monthly product meeting, one of the product owners proposes an idea to address an immediate shortcoming of the product system: storing a copy of the customer price schedule in the customer record in the database. You know that you can store large text or binary objects in DynamoDB. You give a tentative OK to do a minimum viable product (MVP) test, but you stipulate that it must comply with the size limitation on the attribute name and value. Which is the correct limitation?

The value and name combined must not exceed 400KB.

You are required to run Docker containers within AWS. What AWS solution provides this service?

EC2 Container Service (ECS)

You are implementing a content delivery network (CDN) using Amazon CloudFront. What are the locations, distributed throughout the world, that contain the cached data called?

Edge locations

When multiple resources can perform the same function, which one of the following is not a valid routing policy that Route 53 can use to select the appropriate resource for a request?

OS-based routing

Which of the following strategies does AWS use to deliver the promised levels of DynamoDB performance? (Choose two.)

Data is stored on solid state disks (SSDs)., The database is partitioned across a number of instances.

What does AWS provide for extremely large dataset transport to the cloud that provides for offline transport?

Snowball

If you want all user requests made to a CloudFront configuration to force HTTPS instead of HTTP transfers, what should you do?

Configure the Protocol Policy to specify Redirect HTTP to HTTPS

You are responsible for implementing Amazon Kinesis Data Analytics. What language is used to process the data streams as they flow through the system?

SQL

What is the maximum S3 PUTs per second rate supported in AWS?

3500

DynamoDB has many use cases. Which of the following are legitimate use cases for DynamoDB? (Choose three.)

Storing the metadata of BLOB data stored in S3, Storing web session data, Storing JSON data

You must enable alerts and other notifications to be sent to the appropriate individuals from the AWS cloud. What AWS service can provide this function?

Amazon Simple Notification Service (SNS)

What is true about edge locations when using CloudFront?

They are read/write

What cannot be accomplished with an EFS storage solution?

Connecting it to a Windows instance

What AWS service can be used to automate server scaling and configuration based on Chef or Puppet?

OpsWorks

Your client has been experiencing problems with their aging in-house infrastructure and is extremely concerned about managing the cost of maintaining their online presence. After deciding that the cost of developing a sound DR plan more than makes up for the negative impact of being offline, the board has directed you to prepare a proposal that achieves an RTO of 20 hours, an RPO of 1 hour, and keeps the costs of meeting those target time windows to a minimum. They have also mandated the use of the AWS Storage Gateway to mitigate the risk associated with a catastrophic NAS failure. Which of the following solutions best meet the requirements?

Work with the customer’s engineers to identify the key servers and data. Help them set up an AWS account with IAM users, groups, and roles. Build templates of the critical web/app servers and save these as AMIs. Agree upon RDS specifications that meet the stated requirements. Set up the Storage Gateway and the Snapshot schedule to meet the RPO. Document, script, or automate the steps to initiate the RDS instance, the EC2 instances, the steps to restore the latest data from the Storage Gateway snapshots into RDS, plus any DNS changes. Test the process with each of the operations team’s shifts.

You are planning an EFS implementation in AWS. You are uncertain how many files will be created and the total storage space required. What should you specify as the allocated EFS storage space?

You do not specify storage space allocation when creating an EFS file system

Given that Elastic Beanstalk automatically creates the environment to run your application code, what is the extra cost associated with its use?

No extra cost

What is the up-front cost incurred by creating S3 buckets?

For what purpose is the Elastic Transcoder used?

To convert media formats and sizes for different target devices and systems

What can be easily implemented to segregate a group of servers from the rest of your AWS cloud so that the servers can communicate with each other and the Internet, but not with other servers in your cloud?

VPC

Why might you choose a specific region when creating an S3 bucket rather than accepting a default region?

To place the bucket closer to the users for improved performance

What is the default upload operation type for data transferred to an S3 bucket?

A single PUT operation

What AWS service allows you to run code in the AWS cloud without provisioning any of the underlying resources required for code execution?

Lambda

Which of the following services should you implement in multiple availability zones in order to achieve high availability? (Choose two.)

EC2, RDS

You must transfer one exabyte of data into AWS and you do not want to transfer it across the Internet. What AWS solution should you use?

Snowmobile

What service within AWS provides for DNS name management and resolution?

Route 53

You must implement an S3 storage solution that encrypts data at rest in the S3 buckets. Which S3 storage class supports at-rest data encryption?

All of these

What cannot be specified for an S3 bucket?

The Availability Zone (AZ)

You are responsible for planning EFS implementation in AWS. What is the default limit on the number of EFS file systems that can be created per account?

Which one of the following languages is not supported by Elastic Beanstalk?

Perl

You want to provide multiple virtual hard disks to an EC2 instance. What can you attach to an instance to provide these virtual hard disks?

EBS volume

You are a consultant planning to deploy DynamoDB across three AZs. Your lead DBA is concerned about data consistency. Which of the following do you advise the lead DBA to do?

Ask the development team to code for strongly consistent reads. As the consultant, you will advise the CTO of the increased cost.

What HTTP response is given upon a successful upload of a file to an S3 bucket?

200

In the event of loss of access to an Availability Zone for any reason, which S3 storage class does not provide resiliency?

S3 One Zone-Infrequent Access

You must select the S3 storage class with the highest level of resiliency. Which class do you choose?

S3 Standard

What is the benefit of multipart upload?

Greater success is achieved when uploading large files

What is the default limit on the number of S3 buckets that can be created by an account?

100

Which one of the following storage methods is object-based?

S3 Standard

What kind of storage is used with EBS volumes?

Block storage

What instance type family is best used when things like specialized GPUs or FPGAs are required?

Accelerated computing

What AWS database solution is best suited for data warehouse implementations?

Redshift

How does AWS deliver high durability for DynamoDB?

DynamoDB data is automatically replicated across multiple AZs.

To use a custom domain name and URL when hosting a static website in a bucket, what two services of AWS are required?

S3 and Route 53

HTTP is used to upload to S3 buckets. Which HTTP method has eventual consistency with S3 bucket writes?

Deletes

You have been asked to provide a folder-like structure in S3 buckets. How can this be accomplished?

Using prefixes and delimiters

You have been asked to host a static website in AWS as quickly as possible. What is the simplest solution to use?

Which one of the following components is used at a customer location to implement a site-to-site VPN connection with AWS?

Customer gateway

What is used to cache, or store, data and connect with S3 buckets from the on-premises customer location?

Storage gateway

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critical flaw · 98問 · 2年前

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