After scheduled network maintenance, users report that an externally hosted web application is particularly slow to load. Small items on the page load such as text documents and markup, but larger multimedia files do not load. Which of the following is the MOST likely cause of the reported issues?
A. Incorrect MTU in the network segment
B. Misconfiguration of QoS settings
C. Incorrect VLAN for the affected PCs
D. Excessive latency on the local LAN segment
