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Computer Networks
Reference Models
Q
Transmission data rate is decided by ____________
AA. Network layer
BB. Physical layer
CC. Data link layer
DD. Transport layer
Correct Answer:
B. B. Physical layer
Explanation:
Physical layer is a layer 1 device which deals with network cables or the standards in use like connectors, pins, electric current used etc. Basically the transmission speed is determined by the cables and connectors used. Hence it is physical layer that determines the transmission speed in network. Some of the cables used for high speed data transmission are optical fiber cables and twisted pair cables.
