Western Governors University (WGU) ITEC3005 D341 Cloud Deployment and Operations Practice Exam

The Network Load Balancer (NLB) is particularly suitable for a Voice over Internet Protocol (VoIP) service that uses the Session Initiation Protocol (SIP) on port 5060 due to its capability to handle high-throughput and lower-latency connections. NLB operates at the transport layer (Layer 4), which allows it to efficiently route traffic based on IP protocol data. This is critical for VoIP services, as they demand fast and reliable transport of voice packets.

NLB is designed to handle millions of requests per second and maintain ultra-low latencies, which is essential for real-time communications such as voice calls. The load balancer can manage sudden spikes in traffic without interrupting the SIP signaling needed for call setup and management.

Additionally, NLB supports static IP addresses and can also serve as a single point of access for your VoIP application, ensuring high availability, which is vital for maintaining uninterrupted service for users.

In contrast, the other types of load balancers such as the Application Load Balancer (ALB) and Classic Load Balancer (CLB) are more suited for HTTP/HTTPS traffic (Layer 7), where more complex routing decisions based on the application layer are necessary. The Gateway Load Bal