Highclere Castle, Berkshire, from Downton Abbey. The 5,000-acre estate and Jacobethan castle shot to fame due to ITV's hit series about British class. In fact, Downton could well have saved the property, owned by the Earl and Countess of Carnarvon, from closure. It needed Â£11.75 million worth of repairs prior to the series.
LDAP stands for Lightweight Directory Access Protocol. As the name suggests, it is a lightweight protocol for accessing directory services, specifically X.500-based directory services. LDAP runs over TCP/IP or other connection oriented transfer services.
LDAP has been around since the early 1990s and is a simplified subset of X.500 which has been around since the 1980s. LDAP is a staple of enterprise IT infrastructures for authenticating and storing data about users, and it's also successfully made the transition to Internet-scale platforms.