Half-duplex and Full-duplex Switching 

1. Half-duplex and Full-duplex
Switching
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2.  Local Area Network (LAN) communication can operate in
two modes. Half-duplex and Full-duplex.
 Half-duplex Local Area Network (LANs) are networks of the
past.
 Half-duplex Local Area Networks (LAN) exists normally in a
shared network medium like 10Base2 (coaxial cable), 10Base5
(coaxial cable), and Ethernet hubs.
 Devices operating in a half-duplex Local Area Network
(LAN) cannot send and receive data simultaneously.

3.  A device can either Send data or Receive data only in a half-
duplex Local Area Network (LAN).
 In half-duplex Local Area Networks (LANs), one device sends the
frame and all other devices in the collision domain listen for
the Ethernet frame.
 Collision is a problem in half duplex networks.

4.  Almost all current networks operate in full-duplex mode.
 In a Local Area Network (LAN) operating in full-duplex mode, a
device can send and receive Ethernet frames simultaneously.
 In a full-duplex mode, there are separate channels to send and
receive frames.
 There is no collision detection in devices operating in full-duplex
mode, since collision detection is not required.