Web apps can't send notifications when it's closed because it is not installed into the device as a software program, meaning it doesn't have enough access to do so. Plus you are closing it down so how is something that you close down supposed to work?
Answer:
have the same SSID but different channels
Explanation:
Based on the information provided within the question it can be said that the best option to accomplish this would be to have the same SSID but different channels. This would maintain the users connected to the same network name (SSID) but still be able to roam and jump from one access point to the other.
Answer:
Virtual Private Network (VPN)
Explanation:
A VPN can extend a private network over the internet securely to a mobile user or branch office. The traffic is encrypted between the private network and branch office or mobile users. VPN enables users to access and share resources like they were directly connected to the main network.
Answer:
examples are:
com or .edu is a top-level domain name (TLD)
cornell.edu is a second-level domain name (SLD)
bigred.cornell.edu is a third-level or three-part domain name
project.bigred.cornell.edu is a fourth-level or four-part domain name
hope this helps you.