Quality of Service (QoS)

Correct Answer: Enable Traffic Shaping to prioritize VoIP traffic

The best answer is to enable Traffic Shaping to prioritize VoIP traffic. Traffic shaping is a QoS (Quality of Service) technique that allows network administrators to prioritize certain types of traffic, like VoIP, over others. By prioritizing VoIP packets, the quality of voice calls can be maintained even during periods of high network utilization, such as during lunch hour when many employees may be using the internet. Restricting VoIP call times would not address the underlying issue of network congestion and could negatively impact business operations. While upgrading the internet connection could help, it may not be necessary if QoS is properly implemented. Deep Packet Inspection is used for analyzing network traffic in detail but would not directly improve VoIP call quality on its own.

Correct Answer: Implement Low Latency Queuing (LLQ) for the application

Implementing Low Latency Queuing (LLQ) is the best QoS technique for reducing latency in a business-critical application during peak hours. LLQ prioritizes delay-sensitive traffic, such as voice or video, over other traffic types. This ensures that the high-priority traffic experiences minimal delay, even during network congestion. Upgrading the internet connection, replacing network hardware, or migrating to the cloud may improve overall performance but do not specifically address the latency issue for the critical application during peak usage periods. QoS techniques like LLQ are designed to manage and prioritize traffic to meet the latency requirements of sensitive applications.

Correct Answer: Prioritization

The best answer is 'Prioritization'. Quality of Service (QoS) techniques help to prioritize network traffic. In the context of a streaming video problem, prioritization would involve allocating higher priority to the video streaming packets so they come first in the queue, hence improving streaming quality. The other answers while valid network methods do not directly improve video streaming quality. 'Policing' is more about regulating network traffic to prevent overuse and doesn't directly improve speed. 'Load balancing' is classified under distributing network traffic for uniform utilization but may not speed up video streaming. 'Error recovery' is a procedure that handles errors in data transmission but doesn't necessarily improve streaming quality as it is more reactive than proactive.