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.
Currently the An-124 is the world's largest production military aircraft. Only the one-off Antonov An-225 is bigger. Development of this long-range heavy transport plane started in 1971. It made its first flight in 1982 and entered service with the Soviet Air Forces in 1987.