A hub is a device that connects:

A.
two LANs using different protocols.

B.
a LAN with a WAN.

C.
a LAN with a metropolitan area network (MAN).

D.
two segments of a single LAN.

Explanation:
A hub is a device that connects two segments of a single LAN. A hub is a repeater. It provides transparent
connectivity to users on all segments of the same LAN. It is a level 1 device.
Incorrect answers:
A:
A bridge operates at level 2 of the OSI layer and is used to connect two LANs using different protocols (e.g.,
joining an ethernet and token network) to form a logical network.
B:
A gateway, which is a level 7 device, is used to connect a LAN to a WAN.
C:
A LAN is connected with a MAN using a router, which operates in the network layer.