East-West traffic refers to data flows between servers or devices within the same datacenter. When a hosted virtual server is duplicated to another physical server for redundancy, it generates significant East-West traffic as the data is replicated between the two servers. Reference:
Network+ N10-008 Objectives: 3.3 Given a scenario, implement secure network architecture concepts.

Explanation
Latency, also known as round-trip time (RTT), is the time it takes for a data packet to travel from a source to its destination and back again. It is a key indicator of network performance and can be used to identify fluctuations that may impact the user experience of an application.
Bandwidth, loss, and cyclic redundancy check (CRC) are other important network performance metrics, but they are not directly related to the application team's requirement to monitor for fluctuations in RTT.
References:
CompTIA Network+ N10-008 Exam Objectives, Objective 1.6: Network Performance Monitoring CompTIA Network+ N10-008 Study Guide, Chapter 10: Network Performance Monitoring and Troubleshooting Additional Notes:
The network team can use a variety of tools and techniques to monitor RTT, such as ping, traceroute, and network monitoring software.
When setting up alerts, the network team should consider the acceptable range of RTT for the application. They should also configure alerts to trigger at different levels of severity, so that they can take prompt action to resolve any issues.

Option A (disabling the SSID broadcast on the WAP in the patio area) would not necessarily improve connectivity in the patio, and it could make it more difficult for users to connect to the wireless network. Option B (enabling 5GHz only within the patio area) might improve connectivity for devices that support the 5GHz frequency band, but it would not help devices that only support the 2.4GHz frequency band. Option D (installing a repeater on the back wall of the patio area) might help to extend the range of the wireless network, but it would not necessarily improve connectivity for users in the patio.

VoIP uses UDP port 5060 unsecured and UDP port 5061 secured.