CHAPTER 8. THE DOMAIN NAME SYSTEM AND NETWORK -

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CHAPTER 8. THE DOMAIN NAME SYSTEM AND NETWORK -

AMAZON ROUTE 53 AND AMAZON CLOUDFRONT EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -20 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: 7. For regulatory compliance, your application may only provide data to requests coming from the United States. Which of the following routing policies can be configured to do this?

• Simple
• Latency
• Geolocation
• Multivalue

Answer:

• Geolocation

• Geolocation can control routing by the geographic origin of the request. The simple policy sends

traffic to a single resource. Latency sends content using the fastest origin resource. Multivalue can be used to make a deployment more highly available.

Question 2: 10. You have production infrastructure in one region sitting behind one DNS domain, and for disaster recovery purposes, you have parallel infrastructure on standby in a second AWS region behind a second domain. Which routing policy will automate the switchover in the event of a failure in the production system?

• Latency
• Weighted
• Geolocation
• Failover

Answer:

• Failover

Question 3: 12. Which of the following actions will you need to perform to transfer a domain from an external registrar to Route 53? (Choose two.)

• Unlock the domain transfer setting on the external registrar admin page.
• Request an authorization code from the external registrar.
• Copy the name server addresses from Route 53 to the external registrar admin page.
• Create a hosted zone CNAME record set.

Answer:

• Unlock the domain transfer setting on the external registrar admin page.

• Request an authorization code from the external registrar.
• A,
• To transfer a domain, you'll need to make sure the domain isn't set to locked. You'll also need an

authorization code that you'll provide to Route 53. Copying name server addresses is necessary only for managing domains that are hosted on but not registered with Route 53. CNAME record sets are used to define one hostname as an alias for another.Para transferir um domain de um external registrar para o Route53 é necessário: Desbloquear a transferência de domínio nas configurações de admin do external registrar.Solicitar um código de autorização do external registrar, que será fornecido ao Route53.

Question 4: 17. Which of the following is not a permitted origin for a CloudFront distribution?

• Amazon S3 bucket
• AWS MediaPackage channel endpoint
• API Gateway endpoint
• Web server

Answer:

• API Gateway endpoint

-

• API Gateway is used to generate custom client SDKs for your APIs to connect your backend

systems to mobile, web, and server applications or services.

• Não é possível usar o API Gateway Endpoint como Origin no Cloudfront Distribution.
• É possível utilizar um S3 Bucket, AWS MediaPacke channel endpoint, ou até mesmo um Web Server.

Question 5: 2. Your organization is planning a new website and you're putting together all the pieces of information you'll need to complete the project. Which of the following describes a domain?

• An object's FQDN
• Policies controlling the way remote requests are resolved
• One or more servers, data repositories, or other digital resources identified by a single

domain name

• A label used to direct network requests to a domain's resources

Answer:

• One or more servers, data repositories, or other digital resources identified by a single domain name

-

• A domain is a set of resources identified by a single domain name. FQDN stands for fully qualified

domain name. Policies for resolving requests are called routing policies.Question 6: 9. You're testing three versions of a new application, with each version running on its own server and the current production version on a fourth server. You want to route 5 percent of your total traffic to each of the test servers and route the remaining 85 percent of traffic to the production server. Which routing policy will you use?

• Failover
• Weighted

• Latency
• Geolocation

Answer:

• Weighted

• Weighted policies route among multiple resources by percentage. Failover incorporates backup

resources for higher availability. Latency selects the available resource with the lowest latency.Geolocation tailors request responses to the end user's location.Question 7: 19. Which of the following is not a direct benefit of using a CloudFront distribution?

• User requests from an edge location that's recently received the same request will be

delivered with lower latency.

• CloudFront distributions can be directly mapped to Route 53 hosted zones.
• All user requests will be delivered with lower latency.
• You can incorporate free encryption certificates into your infrastructure.

Answer:

• All user requests will be delivered with lower latency.

-

• Not every CloudFront distribution is optimized for low-latency service. Requests of na edge location

will only achieve lower latency after copies of your origin files are already cached. Therefore, a response to the first request might not be fast because CloudFront still has to copy the file from the origin server.

• Não é um beneficio direto do Cloudfront Distribution entregar TODAS requisições com baixa latência,

porque isto é alcançado somente após cachear.

• São benefícios do Cloudfront as requisições com baixa latência, após ser requisitado algo que foi

recebido recentemente. Mapeamento do Cloudfront com Route53 zones. Incorporar certificados de encriptação gratuitos na infraestrutura.Question 8: 8. Your web application is hosted within multiple AWS regions. Which of the following routing policies will ensure the fastest possible access for your users?

• Latency
• Weighted
• Geolocation