Question

given in the ethernet switching topology, the switch the laptop to the switch, laptop on the server to switch, and when the server, server all of the server from. when the laptop why the switch can form their own application layer switching on switching all of the
this circuits are shared in series, and when one application turns off, the others can use
this circuits are added in parallel, and when one application turns off, the others will switch to the series circuits for power
this circuits are wired in parallel, and when one application turns off, the others will switch to parallel circuits for power
this circuits are wired in parallel, and when one application turns off, the others can use

Explanation:

When applications are opened, they need sockets for communication (like sending and receiving data). When an application is closed, it releases the socket so it can be reused. Sockets are in a CLOSE_WAIT state when an application is paused (not fully closed) and in a FIN_WAIT state when an application is shut down (fully closed).

Answer:

The sockets are closed in FIN_WAIT state, and when an application shuts off, the server will release its socket for reuse.