Microsoft Certified: Azure Fundamentals (AZ-900) Practice Exam

What is a load balancer designed for web applications at the TCP level called?

1. Gateway

2. Load Balancer

3. Network Security Group

4. Traffic Manager

The correct answer is: Gateway

The correct answer is that a load balancer designed for web applications at the TCP level is specifically referred to as a Load Balancer. This service efficiently distributes network or application traffic across multiple servers to ensure reliability and performance. In the context of Azure, this type of load balancer operates at Layer 4 (the transport layer), functioning by directing TCP traffic to various back-end resources based on the defined rules. By balancing the load, it improves the overall availability and responsiveness of applications, particularly in handling large volumes of user requests. The other choices represent different Azure functionalities that do not specifically deal with the traffic distribution at the TCP level for web applications. A Gateway typically refers to a network node that serves as an access point to another network, not specifically for load balancing. A Network Security Group is used for filtering network traffic to and from Azure resources based on specified rules, while Traffic Manager is a DNS-based load balancer that optimizes the distribution of traffic across global Azure regions but does not operate at the TCP level like a standard Load Balancer does.