Which of the following protocols is NOT used to build a routing table?

The correct choice is LPD because it stands for Line Printer Daemon, which is a protocol for managing print jobs on a network. It is unrelated to the process of routing data packets or building a routing table. In contrast, OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol) are dynamic routing protocols used to discover and maintain routing information in a network. They actively participate in building the routing table by exchanging routing updates and determining the best paths for data transmission.

Static routing, on the other hand, refers to manually configuring routes in a routing table, which allows a network administrator to set specific paths for data without searching for routes dynamically. Therefore, while OSPF, BGP, and static routing all contribute to the construction and management of routing tables, LPD does not play any role in this process and is focused solely on print job management.