If you can't allocate a socket, can your app work (game in offline mode)? If you can't allocate memory, can your app work (... example ...)? I guess something

If you can't allocate a socket, can your app work (game in offline mode)? If you can't allocate memory, can your app work (... example ...)? I guess something like trying to load a huge file (say spreadsheet) in excel-type of app.