I'd say information-gathering but I'm not really sure
Do not text whilst at the dinner table or cross the road (even a Zebr crossing) while texting.
Answer:
Re transmit the packet
Explanation:
When data collisions occur several data packets are lost during transmission.
This will re transmit the packet.
Protocol will drop the packet.
In the CSS, background-image: url( "/path/to/file" )
http://www.w3schools.com is a handy reference.
It is mostly a science. It deals with computer science and discrete mathematics.