if you're talking about the effect that is timed with the typing of the text, i don't know what you call it but here's how to mimick it. get a program with a tone generator, experiment with a sine, square or triangle wave with a time duration of 2-15ms, (you'll have to play with it to know for sure - that's just a guess,) try frequency about 400 -600hz and use your ear until you get the right frequeny/pitch, and time duration. Once you've done this you can tag it to your video.

Is it the sound when something shows up on radar? Or is it that boing/beep sound?

its a beep sound and ty for the info vinniesrs but i actually just recorded the wound off of the movie hunt for the red october