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Answer: Use Amazon CloudWatch to access the AWS/Route 53 namespace and to check the DNSQueries metric for the public hosted zone.
To assess whether the change in TTL has increased the number of queries to Route 53 beyond expected levels, the network engineer needs to monitor the DNS queries made to the example.com public hosted zone. Option B is the correct solution because it directly involves using Amazon CloudWatch to access the AWS/Route 53 namespace and check the DNSQueries metric for the public hosted zone. This metric provides the number of DNS queries that Route 53 receives for the specified hosted zone, which is exactly the information needed. Option A suggests using AWS CloudTrail and CloudWatch Logs, which is not the most efficient way to monitor DNS queries specifically. Option C refers to the AWS/Route 53 Resolver namespace, which is not relevant for monitoring queries to a public hosted zone. Option D suggests configuring logging to CloudWatch for the public hosted zone, which, while it could provide the necessary data, is not as straightforward or efficient as directly using the DNSQueries metric in CloudWatch.
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A company utilizes Amazon Route 53 to manage a public hosted zone for example.com. A network engineer recently decreased the TTL on multiple records to 60 seconds. The engineer needs to evaluate if this adjustment has caused the query volume to Route 53 to exceed the anticipated levels established prior to the change. The engineer must retrieve the total number of queries made to the example.com public hosted zone.
Which solution will deliver this information?
A
Create a new trail in AWS CloudTrail to include Route 53 data events. Send logs to Amazon CloudWatch Logs. Set up a CloudWatch metric filter to count the number of queries and create graphs.
B
Use Amazon CloudWatch to access the AWS/Route 53 namespace and to check the DNSQueries metric for the public hosted zone.
C
Use Amazon CloudWatch to access the AWS/Route 53 Resolver namespace and to check the InboundQueryVolume metric for a specific endpoint.
D
Configure logging to Amazon CloudWatch for the public hosted zone. Set up a CloudWatch metric filter to count the number of queries and create graphs.