5 Questions
What is the most challenging part in the implementation and deployment of a high-speed wide area public digital network?
The link between subscriber and network: the digital subscriber line (ADSL).
What does ADSL stand for?
ADSL stands for Asymmetric Digital Subscriber Line.
Explain the term 'asymmetric' in the context of ADSL technology.
ADSL provides more capacity downstream (from the carrier’s central office to the customer’s site) than upstream (from customer to carrier), making it a good fit for Internet requirements.
How does ADSL utilize frequency division multiplexing (FDM) to achieve high-speed digital data transmission?
ADSL uses frequency division multiplexing (FDM) in a novel way to exploit the 1-MHz capacity of twisted pair, and when echo cancellation is used, the entire frequency band for the upstream channel overlaps the lower portion of the downstream channel.
What is the maximum range provided by the ADSL scheme, and what factors does it depend on?
The ADSL scheme provides a range of up to 5.5 km, depending on the diameter of the cable and its quality.
Test your knowledge of digital subscriber line technology with this ADSL quiz. Learn about the challenges and benefits of implementing and deploying high-speed wide area public digital networks, and understand the complexities of asymmetric digital subscriber line technology.
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