AWS Route 53 Hybrid DNS Quiz

1. Which Route 53 record type is used to associate a domain name with an IPv6 address?

A record

AAAA record

CNAME record

PTR record

2. In Route 53 multi-value answer routing, what is the maximum number of records returned per query?

2

4

8

16

3. Which Route 53 feature allows you to test DNS failover before a real failure occurs?

Health check simulation

Evaluate target health option

Test failover in Route 53 console

DNS query replay

4. What is the TTL (Time To Live) default value for Route 53 hosted zone name servers?

60 seconds

300 seconds

3600 seconds

172800 seconds

5. In a hybrid DNS setup, how does Route 53 Resolver prevent DNS query loops between AWS and on-premises networks?

By enforcing DNSSEC signatures

By using conditional forwarding rules and query logging

By automatically blocking recursive queries

By implementing TTL-based caching

6. What is the primary use case for Route 53 geoproximity routing?

Route traffic based on user's geographic location with adjustable bias

Route traffic to the nearest AWS region

Distribute traffic equally across all regions

Route traffic based on DNS server location

7. In Route 53, what is the maximum number of health checks you can associate with a single record set?

1

5

Unlimited

100

8. Which Route 53 routing policy is best for distributing traffic proportionally across multiple resources?

Simple routing

Weighted routing

Geolocation routing

Multi-value answer routing

9. What does DNSSEC in Route 53 provide for your hosted zones?

Encryption of DNS query traffic

Digital signatures to verify DNS response authenticity

Automatic backup of DNS records

Rate limiting for DNS queries

10. In a hybrid DNS architecture, what is the role of a Route 53 Resolver outbound endpoint?

Forward queries from AWS to on-premises DNS servers

Accept DNS queries from on-premises networks

Cache DNS responses for all regions

Replicate hosted zones across accounts

11. What is the primary advantage of using Route 53 Resolver endpoints in a hybrid DNS environment?

They enable bidirectional DNS resolution between AWS and on-premises networks

They eliminate the need for NAT gateways

They automatically scale DNS query capacity without additional configuration

They provide encryption for all DNS queries without TLS overhead

12. What is the primary benefit of using Route 53 Traffic Flow for complex routing scenarios?

It reduces DNS query latency by 50%

It allows visual creation and management of complex routing policies

It automatically optimizes TTL values

It eliminates the need for health checks

13. In a multi-region failover scenario, what determines the order in which Route 53 attempts failover?

The alphabetical order of region names

The health check status and failover record set order

The number of endpoints in each region

The latency measurement to each region

14. Which Route 53 feature enables you to monitor DNS query patterns and troubleshoot resolution issues?

Health check alarms

Query logging

Traffic flow policies

DNS firewall rules

15. What feature allows you to create conditional forwarding rules in Route 53 Resolver for specific domains?

DNS firewall

Resolver rules

Query logging

DNSSEC signing

16. In Route 53 latency-based routing, how does the service determine which endpoint to route traffic to?

By measuring real-time latency from the user to each endpoint

By using historical latency data from the region

By checking the endpoint's current CPU utilization

By randomly selecting from available endpoints

17. What is the minimum time interval for Route 53 health checks in standard mode?

10 seconds

30 seconds

60 seconds

120 seconds

18. Which health check type monitors an HTTP endpoint without requiring the endpoint to return a specific status code?

HTTP health check

TCP health check

CloudWatch alarm health check

Calculated health check

19. In a hybrid DNS setup, what is the purpose of a Route 53 Resolver inbound endpoint?

Forward on-premises DNS queries to AWS hosted zones

Allow on-premises resolvers to query Route 53 hosted zones

Cache DNS responses for improved performance

Replicate DNS records across multiple regions

20. Which Route 53 routing policy distributes traffic based on geographic location of the requester?