You are unpacking and setting up workstations
system. the school
system has given you cables to connect the computer twork once they are
set up in the classrooms. you connect one end of the cables into the buildin nic
cards. what will you plug the other end into?
the mdf
the idf
a router
a drop

For setting up workstations in classrooms, one end of cables connected into the built in NIC and other end will be connected to a drop.

Explanation:

A drop will be used for connectivity in this case, which will work as connection point in a network. Drops are just like outlets in wall having  Ethernet Jacks where a network device or system can be plugged into it.