Ping
ping
ping hostnameyou can ping different ways, by hostname or IPexample by ip to Google's dns server.ping 8.8.8.8example by hostname to google.comping google.com
Typically Ping is used for that feature.
The user computer initiates it by sending the request over some random protocol to the http server, which responds by sending requested information over port :80 eq the http protocol to the user computer.
By sending a friend request.
by sending embee request to friends
by sending them a request
The other person might send you a friend request on Moshi Monsters.
Passive-interface command is used in all routing protocols to disable sending updates out from a specific interface.
When you press enter to go to website your computer is actually sending a request to another one (the server) which hosts the website. If, after a certain amount of time, your computer doesn't receive an answer from the server, it is said to have "timed out"
By sending communication sattelites- phones/connectivity By sending observatory sattelites- mapping earth, climatic alerts/assesment/security by sending exploratory sattelites- exciting to know the universe and its planets/stars/galaxies/possibility for future habitation
Sending a friend request to this person again will unblock them.
Sending this person a friend request again will unblock them from your tree.