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.
Largest plane in the world to perform test flights in 2016. Microsoft co-founder Paul Allen started planning to build the largest plane in the world in 2011, along with several partners -- including Elon Musk. Now, that plane (called Stratolaunch) is under construction at the Mojave Air and Space Port in California, and is expected to undergo testing as soon as 2016.