Google Professional Cloud Network Engineer

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Your application uses an external global Application Load Balancer, and backend servers are experiencing overload due to irregular spikes in client request rates. To adhere to Google-recommended practices, how should you limit concurrent sessions and return HTTP 429 (Too Many Requests) responses to clients?

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Create a Cloud Armor security policy, and associate the policy with the load balancer. Configure the security policy's settings as follows: action: throttle; conform action: allow; exceed action: deny-429.

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Configure the load balancer to accept only the defined amount of requests per client IP address, increase the backend servers to support more traffic, and redirect traffic to a different backend to burst traffic.

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Create a Cloud Armor security policy, and apply the predefined Open Worldwide Security Application Project (OWASP) rules to automatically implement the rate limit per client IP address.

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Configure a VM with Linux, implement the rate limit through iptables, and use a firewall rule to send an HTTP 429 response to the client application.

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