What is the line speed of a DS0 in North America?
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A. B. C. D.C.
The line speed of a DS0 in North America is 64 kbps (option C).
DS0 is a basic digital signaling rate that refers to a 64-kilobit per second (kbps) channel used for voice and data communication over digital telecommunication networks. It is a fundamental unit of the digital hierarchy in North America and is used in several technologies such as T1, ISDN, and DS1.
The DS0 signal is created by sampling an analog voice or data signal at a rate of 8,000 times per second and encoding each sample into an 8-bit digital word. This results in a data rate of 64 kbps (8 bits x 8,000 samples per second).
DS0 channels can be combined to create higher-speed circuits such as T1 (1.544 Mbps) and E1 (2.048 Mbps) circuits. T1 circuits consist of 24 DS0 channels, while E1 circuits consist of 32 DS0 channels.
In summary, the line speed of a DS0 in North America is 64 kbps, and it is a fundamental unit of the digital hierarchy used in various digital communication technologies.