Google Updated Associate-Cloud-Engineer Exam Questions and Answers by jose

https://cloud.google.com/compute/docs/instances/connecting-to-windows#remote-desktop-connection-app

https://cloud.google.com/compute/docs/instances/windows/generating-credentials

https://cloud.google.com/compute/docs/instances/connecting-to-windows#before-you-begin

"Google Cloud VPC Network Peering allows internal IP address connectivity across two Virtual Private Cloud (VPC) networks regardless of whether they belong to the same project or the same organization."

https://cloud.google.com/vpc/docs/vpc-peering

while

"Cloud Interconnect provides low latency, high availability connections that enable you to reliably transfer data between your on-premises and Google Cloud Virtual Private Cloud (VPC) networks."

https://cloud.google.com/network-connectivity/docs/interconnect/concepts/overview

and

"HA VPN is a high-availability (HA) Cloud VPN solution that lets you securely connect your on-premises network to your VPC network through an IPsec VPN connection in a single region."

https://cloud.google.com/network-connectivity/docs/vpn/concepts/overview

The reason is that when you do health check, you want the VM to be working. Do the first check after initial setup time of 3 mins = 180 s < 200 s is reasonable.

The reason why our autoscaling is adding more instances than needed is that it checks 30 seconds after launching the instance and at this point, the instance isnt up and isnt ready to serve traffic. So our autoscaling policy starts another instance  again checks this after 30 seconds and the cycle repeats until it gets to the maximum instances or the instances launched earlier are healthy and start processing traffic  which happens after 180 seconds (3 minutes). This can be easily rectified by adjusting the initial delay to be higher than the time it takes for the instance to become available for processing traffic.So setting this to 200 ensures that it waits until the instance is up (around 180-second mark) and then starts forwarding traffic to this instance. Even after a cool out period, if the CPU utilization is still high, the autoscaler can again scale up but this scale-up is genuine and is based on the actual load.

Initial Delay Seconds  This setting delays autohealing from potentially prematurely recreating the instance if the instance is in the process of starting up. The initial delay timer starts when the currentAction of the instance is VERIFYING.

Ref: https://cloud.google.com/compute/docs/instance-groups/autohealing-instances-in-migs

The goal is to pull (fetch) messages from a subscription and acknowledge them.

The gcloud pubsub subscriptions **pull** command retrieves messages from a specified subscription.

The --auto-ack flag instructs the command to automatically acknowledge the messages after they are successfully retrieved, combining the two required actions into one command.