The issue described is related to network congestion and IP address allocation. When a tenant with a large attendance ends its session, the DHCP lease time of 24 hours means that the IP addresses used by that tenant's attendees are not released back into the pool for a full day. This can lead to an exhaustion of available IP addresses for subsequent tenants. D . Change the DHCP scope end to 10.1.10.250: Increasing the DHCP scope end will provide more available IP addresses for allocation, reducing the likelihood of running out of addresses when there are many users. G . Reduce the DHCP lease time to four hours: Reducing the DHCP lease time means that IP addresses are released back into the pool more quickly after being allocated, making them available for other users sooner and reducing issues with address exhaustion. These changes would most likely alleviate issues with users being unable to connect after sessions with large attendances. Reference: Best practices in managing DHCP include adjusting scope and lease times according to user patterns and network demand. Professormesser CompTIA Network+ Study Guide