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Find downloading speed of Cable modem if 32QAM demodulation technique used?
Wiki User
∙ 15y ago
Ans 1.
when we download from 56k modem, data is changing from a digital signal to an analog signal.
Digital-to-analog conversions are perfectly accurate, so downloading at speeds up to 56K is possible. While uploading, data is changing from an analog signal to a digital signal. Analog-to-digital conversions are imperfect, so noise is introduced into the signal which in result decrease the band-width for uploading.
Ans 2.
The downloading speed of cable modem for 32 QAM is 1280 kbps ( TDMA )
Ans 3.
Single-mode fibers, ones with smaller cores uses infrared transmitted from laser light.
Multi-mode fibers, ones with larger cores uses infrared transmited from LED.
Wiki User
∙ 15y ago
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