Amazon Route 53 DNS Service

Questions and Answers

What is a hosted zone in Amazon Route 53 analogous to?

A collection of DNS servers

A set of routing policies

A traditional DNS zone file (correct)

A type of health check

What type of records are automatically created by Amazon Route 53 for hosted zones?

Alias and CNAME records

NS and SOA records (correct)

A and CNAME records

MX and TXT records

What is required to associate a Route 53 private hosted zone in one AWS account with a VPC in another account?

Using the AWS Management Console

Using the AWS CLI (correct)

Creating a new hosted zone

Configuring the VPC settings

What can you use Alias records to map?

All of the above Signup and view all the answers

What is not supported by Route 53?

Extending Route 53 to on-premises instances Signup and view all the answers

What type of health checks can be pointed at?

Endpoints that can be IP addresses or domain names Signup and view all the answers

What is the main difference between Alias and CNAME records?

Alias records can be used for resolving apex/naked domain names Signup and view all the answers

Which routing policy uses a database of latency from different parts of the world?

Latency routing policy Signup and view all the answers

What is Route 53 Traffic Flow used for?

Global Traffic Management (GTM) services Signup and view all the answers

What is not automatically registered with private hosted zones?

EC2 instances Signup and view all the answers

What is the primary function of Amazon Route 53?

To serve as a Domain Name System (DNS) service Signup and view all the answers

Which statement correctly describes the authoritative DNS server function of Route 53?

It becomes authoritative upon registering a domain Signup and view all the answers

How can Route 53 be made the authoritative DNS for an existing domain without a transfer?

By creating a public hosted zone and changing the existing provider's DNS records Signup and view all the answers

What is the default limit of domain names that can be managed in Route 53?

50 Signup and view all the answers

What protocol does Route 53 primarily use for DNS queries?

UDP port 53 Signup and view all the answers

What is a characteristic of the health checks in Route 53?

They monitor the availability of Internet-connected resources Signup and view all the answers

What account feature allows you to control access to a Route 53 hosted zone?

IAM (Identity and Access Management) Signup and view all the answers

What happens to changes made to DNS Name Servers through Route 53?

They can take effect in up to 48 hours due to TTL values Signup and view all the answers

Which of the following is NOT a routing type supported by Amazon Route 53 Traffic Flow?

Load Balancing Signup and view all the answers

What is the primary purpose of Route 53 Resolver?

To perform DNS resolution for hybrid clouds. Signup and view all the answers

What is the pricing model for Amazon Route 53 hosted zones?

Pay per hosted zone per month, with no partial month charges. Signup and view all the answers

Which of these features would result in higher pricing for Amazon Route 53?

Using latency-based routing. Signup and view all the answers

What is the benefit of using the versioning feature in Amazon Route 53 Traffic Flow?

It allows you to roll back to a previous routing policy version. Signup and view all the answers

Which of the following is NOT a way to provide resolution of Microsoft Active Directory Domain Controller DNS zones and AWS records?

Configuring a VPN connection between Active Directory and AWS. Signup and view all the answers

What is the primary purpose of Amazon Route 53 Resolver?

To enable bi-directional querying between on-premises and AWS over private connections Signup and view all the answers

What is charged in Amazon Route 53?

Hosted zones Signup and view all the answers

What feature allows you to maintain a history of changes to your routing policies in Route 53?

Versioning Signup and view all the answers

What type of routing is more expensive in Amazon Route 53?

Latency-based routing Signup and view all the answers

What is the purpose of Route 53 Resolver Endpoints?

To enable bi-directional querying between on-premises and AWS over private connections Signup and view all the answers

What is not charged in Amazon Route 53?

Alias records Signup and view all the answers

What is used to enable DNS resolution for hybrid clouds?

Route 53 Resolver Signup and view all the answers

What is the benefit of using the versioning feature in Amazon Route 53 Traffic Flow?

To easily roll back to a previous policy version Signup and view all the answers

What type of routing configurations can be created using Amazon Route 53 Traffic Flow?

Failover and geolocation Signup and view all the answers

What is required to extend an on-premises DNS to a VPC?

A DHCP options set Signup and view all the answers

Which statement is true regarding Alias records in Route 53?

Alias records support mapping to AWS service DNS names. Signup and view all the answers

What must be set to true for VPC settings in private hosted zones?

DNS resolution Signup and view all the answers

Which routing policy allows for multiple endpoints that return different IP addresses for a single domain?

Multi-value Answer Routing Policy Signup and view all the answers

What is a key feature of health checks in Amazon Route 53?

They connect to endpoints to assess instance health. Signup and view all the answers

What happens to CNAME records in Route 53 when dealing with apex domain names?

They are not allowed for apex domain names. Signup and view all the answers

What happens when you create a hosted zone with the same name as another hosted zone?

Multiple hosted zones with different records will coexist. Signup and view all the answers

Which routing policy requires the use of Route Flow?

Geo-proximity Routing Policy Signup and view all the answers

Which functionality does Route 53 Traffic Flow provide?

Global Traffic Management services Signup and view all the answers

What protocol is used to specify Fully Qualified Domain Names (FQDN) for NS servers?

UDP Signup and view all the answers

What can be done to make Route 53 the authoritative DNS for an existing domain without transferring it?

Create a public hosted zone and change the DNS Name Servers. Signup and view all the answers

Which statement about transferring domains to Route 53 is correct?

Domains can be transferred if the TLD is supported by Route 53. Signup and view all the answers

What is the role of health checks in Amazon Route 53?

To verify if Internet-connected resources are reachable and functional. Signup and view all the answers

Which of the following statements is true about the use of UDP and TCP in Route 53?

Route 53 primarily uses UDP but can use TCP when necessary. Signup and view all the answers

How does Route 53 handle domain name registration limits?

The limit can be increased by contacting support. Signup and view all the answers

What type of DNS service does Route 53 provide?

A highly available and scalable DNS service. Signup and view all the answers

Which feature of Route 53 allows for authoritative DNS within VPCs?

Private DNS Signup and view all the answers

What happens to changes made to DNS Name Servers through Route 53?

Changes may not take effect for up to 48 hours due to DNS TTL values. Signup and view all the answers

What is required to control management access to a Route 53 hosted zone?

Utilizing Amazon IAM for access control. Signup and view all the answers

What is a hosted zone in Amazon Route 53?

A collection of records for a specific domain. Signup and view all the answers

What happens when you create a hosted zone with the same name as another hosted zone?

An error is returned, as a hosted zone with the same name already exists. Signup and view all the answers

How long can it take for changes to DNS Name Servers to take effect after being modified in Route 53?

Up to 48 hours Signup and view all the answers

Which of the following is NOT a function provided by Amazon Route 53?

Domain registration Signup and view all the answers

What is the primary purpose of Amazon Route 53 Private DNS?

To manage DNS records for internal applications within a VPC. Signup and view all the answers

Which of the following is a benefit of using Alias records in Route 53?

They allow you to map a domain name to an Elastic Load Balancer. Signup and view all the answers

How can you control access to your Amazon Route 53 hosted zone?

By using AWS IAM. Signup and view all the answers

What is the main purpose of health checks in Route 53?

To verify the reachability and functionality of your resources. Signup and view all the answers

Which of the following statements is true about transferring a domain to Route 53?

You can only transfer domains to Route 53 if the TLD is supported. Signup and view all the answers

Which of the following is NOT a benefit of using Amazon Route 53?

Unlimited domain name registration. Signup and view all the answers

What is the main difference between a public hosted zone and a private hosted zone in Route 53?

Public hosted zones are used for public websites, while private hosted zones are used for internal applications within a VPC. Signup and view all the answers

What type of routing policy can be used to create routing configurations based on factors like latency, endpoint health, and load?

Traffic Flow Policies Signup and view all the answers

What feature of Amazon Route 53 allows you to manage a history of changes to your routing policies?

Routing Policy Versioning Signup and view all the answers

Which of these features in Amazon Route 53 would likely lead to higher pricing?

Latency-Based Routing Signup and view all the answers

What is the purpose of Route 53 Resolver Endpoints?

To resolve DNS queries within a VPC Signup and view all the answers

Which of the following is NOT a way to provide resolution of Microsoft Active Directory Domain Controller DNS zones and AWS records?

Deploying a DNS Proxy Server in the VPC Signup and view all the answers

What is charged in Amazon Route 53?

Hosted Zones Signup and view all the answers

What is the main purpose of Amazon Route 53 Resolver?

To perform DNS resolution for hybrid cloud environments Signup and view all the answers

Which type of routing configurations can be created using Amazon Route 53 Traffic Flow?

A combination of failover, geolocation, and latency-based routing Signup and view all the answers

What is the primary purpose of health checks in Amazon Route 53?

To monitor the health and availability of your applications Signup and view all the answers

What is the benefit of using the versioning feature in Amazon Route 53 Traffic Flow?

It provides a mechanism for reverting to previous routing policy configurations. Signup and view all the answers

Which of the following statements about hosted zones in Amazon Route 53 is correct?

A hosted zone can manage multiple records together. Signup and view all the answers

What is a limitation of Alias records compared to CNAME records?

Alias records cannot point to ELB instances. Signup and view all the answers

Which routing policy in Amazon Route 53 is specifically designed to route based on the geographical location of the user?

Geo-location Routing Policy Signup and view all the answers

What is required for health checks in Amazon Route 53 to function properly?

Health checks must be directed to an endpoint. Signup and view all the answers

How can you extend an on-premises DNS to a VPC in Amazon Route 53?

By creating a DHCP options set. Signup and view all the answers

What is a notable difference between Alias records and CNAME records when resolving domain names?

CNAME records can't resolve apex names. Signup and view all the answers

Which feature allows you to associate a Route 53 hosted zone with a VPC from a different AWS account?

Cross-account association Signup and view all the answers

Which record type is specifically designed for mapping resources to Amazon services in Route 53?

Alias record Signup and view all the answers

Which routing policy uses multiple IP addresses to respond to a single DNS query?

Multi-value Answer Routing Policy Signup and view all the answers

What must be set to true for private hosted zones in Amazon Route 53 in regards to VPC?

DNS Resolution Signup and view all the answers

Study Notes

Amazon Route 53 Overview

Highly available and scalable Domain Name System (DNS) service.
Provides worldwide distributed DNS service alongside edge locations.
Functions to perform include routing internet traffic and health checks for resources.

Domain Registration and Management

Authoritative DNS server when a domain is registered with Route 53, creating a public hosted zone.
For existing domains, create a public hosted zone and update Name Servers without transferring the domain.
Changes to Name Servers may take up to 48 hours due to DNS Time To Live (TTL) values.
Domains can only be transferred if the Top-Level Domain (TLD) is supported.

Hosted Zones

Hosted zone is a collection of DNS records for a specified domain, similar to a traditional DNS zone file.
Two types of hosted zones: public and private; NS and SOA records are automatically created.
Multiple hosted zones can share the same name but contain different records.

Health Checks

Health checks verify the availability and functionality of internet-connected resources.
Can be pointed at endpoints that are IP addresses or domain names.
Various health check types can be created for monitoring resources.

DNS Record Types

Supports multiple DNS record types, including Alias records, which map to AWS resources (e.g., ELB, CloudFront).
Alias records allow apex domain name resolution, unlike CNAME records.
Wildcard entries supported for all record types except NS records.

Routing Policies

Determine how Route 53 responds to queries; policies include Simple, Failover, Geo-location, Latency, Multi-value Answer, and Weighted Routing.
Simple Routing Policy is basic; Failover redirects traffic based on health checks.

Traffic Flow

Global Traffic Management (GTM) feature enables creation of routing policies based on specific criteria like latency and load.
Includes versioning for routing policies to maintain change history and rollback options.

Route 53 Resolver

Enables bi-directional DNS querying between on-premises networks and AWS using private connections.
Facilitates DNS resolution for hybrid cloud environments.

Pricing

Charges incurred per hosted zone per month without partial month billing.
Hosted zones deleted within 12 hours of creation incur no charges.
Health checks and specific route types may have varying costs, with some services like Alias records free under certain conditions.

Amazon Route 53 Overview

Highly available and scalable Domain Name System (DNS) service.
Provides worldwide distributed DNS service alongside edge locations.
Functions to perform include routing internet traffic and health checks for resources.

Domain Registration and Management

Authoritative DNS server when a domain is registered with Route 53, creating a public hosted zone.
For existing domains, create a public hosted zone and update Name Servers without transferring the domain.
Changes to Name Servers may take up to 48 hours due to DNS Time To Live (TTL) values.
Domains can only be transferred if the Top-Level Domain (TLD) is supported.

Hosted Zones

Hosted zone is a collection of DNS records for a specified domain, similar to a traditional DNS zone file.
Two types of hosted zones: public and private; NS and SOA records are automatically created.
Multiple hosted zones can share the same name but contain different records.

Health Checks

Health checks verify the availability and functionality of internet-connected resources.
Can be pointed at endpoints that are IP addresses or domain names.
Various health check types can be created for monitoring resources.

DNS Record Types

Supports multiple DNS record types, including Alias records, which map to AWS resources (e.g., ELB, CloudFront).
Alias records allow apex domain name resolution, unlike CNAME records.
Wildcard entries supported for all record types except NS records.

Routing Policies

Determine how Route 53 responds to queries; policies include Simple, Failover, Geo-location, Latency, Multi-value Answer, and Weighted Routing.
Simple Routing Policy is basic; Failover redirects traffic based on health checks.

Traffic Flow

Global Traffic Management (GTM) feature enables creation of routing policies based on specific criteria like latency and load.
Includes versioning for routing policies to maintain change history and rollback options.

Route 53 Resolver

Enables bi-directional DNS querying between on-premises networks and AWS using private connections.
Facilitates DNS resolution for hybrid cloud environments.

Pricing

Charges incurred per hosted zone per month without partial month billing.
Hosted zones deleted within 12 hours of creation incur no charges.
Health checks and specific route types may have varying costs, with some services like Alias records free under certain conditions.

Amazon Route 53 Overview

Highly available and scalable Domain Name System (DNS) service.
Provides worldwide distributed DNS service alongside edge locations.
Functions to perform include routing internet traffic and health checks for resources.

Domain Registration and Management

Authoritative DNS server when a domain is registered with Route 53, creating a public hosted zone.
For existing domains, create a public hosted zone and update Name Servers without transferring the domain.
Changes to Name Servers may take up to 48 hours due to DNS Time To Live (TTL) values.
Domains can only be transferred if the Top-Level Domain (TLD) is supported.

Hosted Zones

Hosted zone is a collection of DNS records for a specified domain, similar to a traditional DNS zone file.
Two types of hosted zones: public and private; NS and SOA records are automatically created.
Multiple hosted zones can share the same name but contain different records.

Health Checks

Health checks verify the availability and functionality of internet-connected resources.
Can be pointed at endpoints that are IP addresses or domain names.
Various health check types can be created for monitoring resources.

DNS Record Types

Supports multiple DNS record types, including Alias records, which map to AWS resources (e.g., ELB, CloudFront).
Alias records allow apex domain name resolution, unlike CNAME records.
Wildcard entries supported for all record types except NS records.

Routing Policies

Determine how Route 53 responds to queries; policies include Simple, Failover, Geo-location, Latency, Multi-value Answer, and Weighted Routing.
Simple Routing Policy is basic; Failover redirects traffic based on health checks.

Traffic Flow

Global Traffic Management (GTM) feature enables creation of routing policies based on specific criteria like latency and load.
Includes versioning for routing policies to maintain change history and rollback options.

Route 53 Resolver

Enables bi-directional DNS querying between on-premises networks and AWS using private connections.
Facilitates DNS resolution for hybrid cloud environments.

Pricing

Charges incurred per hosted zone per month without partial month billing.
Hosted zones deleted within 12 hours of creation incur no charges.
Health checks and specific route types may have varying costs, with some services like Alias records free under certain conditions.

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Description

Learn about Amazon Route 53, a highly available and scalable Domain Name System (DNS) service that provides a worldwide distributed DNS service, health checks, and more.