The recently opened Visa University (2015) is a nice learning facility at the HQ. Subsidized cafeteria and onsite gym at HQ and Austin locations. Not sure if this is a pro, but there are a lot of inflated titles which is great for resume but leads to a lot of VP's reporting to VP's and a top heavy organization.
Mesh networking is a type of network topology in which a device (node) transmits its own data as well as serves as a relay for other nodes. Routers are used to provide the best and most efficient data path for effective communication.
An intranet is a private network, operated by a large company or other organisation, which uses internet technologies, but is insulated from the global internet. An extranet is an intranet that is accessible to some people from outside the company, or possibly shared by more than one organisation.