Some vendors provide firewall, network intrusion detection, and performance analysis modules that can plug into switch ports. Some of these functions may be on combined modules. In other cases, the switch is used to create a mirror image of data that can go to an external device.
The airliner that holds the current record of highest passenger capacity is the Airbus A380. The Airbus A380 is a four-engine aircraft and is the largest commercial plane in the world. The A380 took the first flight in April 2005 and commercial service began in October 25th, 2007 with Singapore Airlines.
This giant was the world's largest operating airplane when it was rolled out in 1968, and is still in use by the U.S. Air Force today. It weighs 840,000 pounds and is 247 feet, 10 inches long, with a wingspan of 222 feet, 9 inches.