AWS Certified Advanced Networking – Specialty (ANS-C01) — Question 179

A company is building a new workload on AWS that uses an Application Load Balancer (ALB). The company has configured a new ALB target group that uses slow start mode. A team begins registering Amazon EC2 instances as targets in the new target group. During testing, the team observes that the targets did not enter slow start mode.

What caused the targets to not enter slow start mode?

Answer options

• A. The ALB configuration uses the round robin routing algorithm for traffic.
• B. The target group did not contain at least one healthy target configured in slow start mode.
• C. The target group must contain EC2 instances that are all the same instance type.
• D. The ALB configuration uses the 5-tuple criteria for traffic.

Correct answer: B

Explanation

The correct answer is B because slow start mode requires at least one healthy target to function. If there are no healthy targets configured for slow start, the targets will not enter this mode. Options A, C, and D do not directly affect the slow start mode functionality in this context.