What name is used to refer to the piece of equipment that connects a router (serial interface) to a leased line provider?
A) CSU/DSU
B) Ethernet switch
C) Frame Relay switch
D) RTS/CTS
A
Explanation: A) The Channel Service Unit/Data Service Unit (CSU/DSU) is used to connect a router's serial interface to a leased line provider. In most modern equipment, the CSU/DSU is internal to the router on the line card.
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