Microsoft Azure Administrator Associate AZ-104 Practice Question
Your company hosts a web application on a set of virtual machines in Azure. The web application needs to be accessible from the internet, and you need to distribute incoming TCP traffic on port 80 across the VMs for load balancing. You also need to ensure high availability in case one of the VMs becomes unavailable. You want to minimize cost and complexity while meeting these requirements.
Configuring a public Azure Load Balancer meets the requirements. It distributes incoming internet traffic to your virtual machines, providing high availability through health probes that detect and remove unhealthy instances. It operates at Layer 4 (TCP/UDP) and is cost-effective and less complex compared to higher-level load balancers. Azure Application Gateway provides Layer 7 (HTTP/HTTPS) load balancing with additional features like web application firewall, but it is more complex and costly, which does not align with the requirement to minimize cost and complexity. Azure Traffic Manager is a DNS-based load balancer used for distributing traffic across different regions, which isn't required here. An internal Azure Load Balancer is used for traffic internal to Azure virtual networks, not for internet-facing applications.
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What are the main functions of a public Azure Load Balancer?
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What is the difference between Layer 4 and Layer 7 load balancing?
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When would I use Azure Traffic Manager instead of a Load Balancer?
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Microsoft Azure Administrator Associate AZ-104
Configure and manage virtual networking
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