SSCP · Question #847
Which of the following devices enables more than one signal to be sent out simultaneously over one physical circuit?
The correct answer is B. Multiplexer. A multiplexer (MUX) is a device that combines multiple signals from multiple sources and transmits them simultaneously over a single physical circuit or transmission medium. This process is called multiplexing. Common types include Time Division Multiplexing (TDM) and Frequency…
Question
Which of the following devices enables more than one signal to be sent out simultaneously over one physical circuit?
Options
- ARouter
- BMultiplexer
- CChannel service unit/Data service unit (CSU/DSU)
- DWan switch
How the community answered
(43 responses)- A5% (2)
- B93% (40)
- D2% (1)
Explanation
A multiplexer (MUX) is a device that combines multiple signals from multiple sources and transmits them simultaneously over a single physical circuit or transmission medium. This process is called multiplexing. Common types include Time Division Multiplexing (TDM) and Frequency Division Multiplexing (FDM). Routers direct traffic between networks, CSU/DSUs connect digital lines to WAN links, and WAN switches forward frames across WAN links - none of these combine multiple signals onto one circuit.
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