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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 204 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 204
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company has deployed an application in which the front end of the application communicates with the backend instances through a Network Load Balancer (NLB) in the same VPC. The application is highly available across two Availability Zones. The company wants to limit the amount of traffic that travels across the Availability Zones. Traffic from the front end of the application must stay in the same Availability Zone unless there is no healthy target in that Availability Zone behind the NLB. If there is no healthy target in the same Availability Zone, traffic must be sent to the other Availability Zone.

Which solution will meet these requirements?

  • A. Create a private hosted zone with weighted routing for each Availability Zone. Point the primary record to the local Availability Zone NLB DNS record. Point the secondary record to the Regional NLB DNS record. Configure the front end of the application to perform DNS lookups on the local private hosted zone records.
  • B. Turn off cross-zone load balancing on the NLConfigure the front end of the application to perform DNS lookups on the local Availability Zone NLB DNS record.
  • C. Create a private hosted zone. Create a failover record for each Availability Zone. For each failover record, point the primary record to the local Availability Zone NLB DNS record and point the secondary record to the Regional NLB DNS record. Configure the front end of the application to perform DNS lookups on the local private hosted zone records.
  • D. Enable sticky sessions (session affinity) so that the NLB can bind a user’s session to targets in the same Availability Zone.
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Suggested Answer: B 🗳️
by Cacheirez at Aug. 13, 2024, 5:49 p.m.
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cas_tori
2 weeks, 6 days ago
Selected Answer: B
this is B
upvoted 1 times
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aragon_saa
1 month ago
Selected Answer: B
Answer is B
upvoted 2 times
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Cacheirez
1 month ago
Selected Answer: B
By disabling cross-zone load balancing on the NLB, the NLB will only route traffic to targets within the same Availability Zone as the incoming request. If no healthy targets exist in the local AZ, the NLB will route the traffic automatically to targets in another AZ.
upvoted 2 times
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