Deploy and Configure an Azure Virtual Machine Scale Sets AZ-104 Practice Questions (Page 6)

Questions 26–30

1. 26expert · hard

   You are deploying a Virtual Machine Scale Set that must be reachable from the internet on port 443. The scale set will be placed in a subnet that already has an NSG. You also need to ensure that the scale set instances can only be accessed via the load balancer, not directly via their public IPs. What should you do?

   • ADo not assign public IPs to the instances, and use a public load balancer with a load-balancing rule for port 443.
   • BUse an internal load balancer and a VPN gateway for internet access.
   • CAssign public IPs to the instances and use an NSG to restrict inbound traffic to the load balancer's frontend IP.
   • DUse Azure Application Gateway with a public frontend and assign public IPs to the instances.
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2. 27foundation · easy

   You configure autoscale for a Virtual Machine Scale Set. Which metric is commonly used to trigger scale-out when CPU usage exceeds a threshold?

   • AVM availability set
   • BNetwork out total
   • CDisk read bytes
   • DPercentage CPU
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4. 28application · medium

   You are creating a Virtual Machine Scale Set that must be placed in an existing virtual network. The scale set instances must be in the same subnet as other VMs and must be able to communicate with a database VM on a different subnet. You need to configure the network settings during deployment. What should you do?

   • AUse Azure Site Recovery to replicate the scale set into the existing VNet.
   • BDeploy the scale set without a network profile and then attach it to the existing VNet after creation.
   • CSpecify the existing virtual network and subnet in the scale set's network profile during creation.
   • DCreate the scale set with a new virtual network and peer it to the existing VNet.
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5. 29application · medium

   You have a Virtual Machine Scale Set with 5 instances. One instance has been running for a long time and has accumulated temporary files that are causing performance issues. You need to reset the instance to its original state without deleting it from the scale set. What should you do?

   • AReimage the instance using the Azure portal or CLI
   • BDeallocate and then start the instance
   • CRestart the instance using the Azure portal or CLI
   • DDelete the instance and let autoscale create a new one
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6. 30application · medium

   A company runs a web application on a Virtual Machine Scale Set. The application experiences predictable daily traffic spikes between 9:00 AM and 5:00 PM local time. The operations team wants to scale out before the spike begins and scale in after it ends, while also maintaining a minimum of 2 instances at all times. You need to configure autoscale for the scale set. What should you do?

   • AConfigure a custom autoscale profile with a default instance count of 2 and a scale-out rule based on the number of requests per instance.
   • BCreate a schedule-based autoscale rule with a recurring time range for weekdays, setting the instance count to 10 during the spike and 2 outside it.
   • CManually resize the scale set to 10 instances every morning and back to 2 every evening using Azure CLI.
   • DCreate a metric-based autoscale rule that scales out when CPU exceeds 70% and scales in when CPU drops below 30%.
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