Home Access Networks Overview

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Questions and Answers

Which technology is commonly used by residences to access the Internet?

  • Dial-Up
  • Satellite
  • Fiber optics
  • DSL (correct)

Where is a DSL modem typically located in relation to the telephone line?

  • At the residence (correct)
  • On the street
  • At the ISP's headquarters
  • At the central office (CO)

What does DSLAM stand for in the context of home Internet access?

  • Digital Subscriber Line Access Multiplexer (correct)
  • Digital Subscriber Line Access Modem
  • Data System Link Analysis Model
  • Digital Signal Line Adapter Module

Why is DSL often provided by the local telephone company to residences?

<p>Due to the existing telephone line infrastructure (C)</p> Signup and view all the answers

What is the purpose of a splitter in a DSL setup?

<p>To separate the data and telephone signals (A)</p> Signup and view all the answers

In DSL Internet access, why are downstream and upstream transmission rates different?

<p>Due to the distance between the home and the CO (D)</p> Signup and view all the answers

What is a characteristic feature of hybrid fiber coax (HFC) systems for cable Internet access?

<p>They involve fiber optics and coaxial cables (A)</p> Signup and view all the answers

Why must residences located far from the CO consider alternative forms of Internet access instead of DSL?

<p>Because of limitations in DSL's operational distance (C)</p> Signup and view all the answers

What is the purpose of a DSLAM in a DSL network infrastructure?

<p>To separate data and phone signals (C)</p> Signup and view all the answers

How do DSL standards contribute to internet access limitations for residences?

<p>By varying transmission rates based on location (A)</p> Signup and view all the answers

What is the main reason why residences typically obtain DSL Internet access from the same local telephone company?

<p>To have a single point of contact for both phone and internet services (A)</p> Signup and view all the answers

Why does a DSL modem translate digital data into high-frequency tones for transmission over telephone wires to the CO?

<p>To ensure compatibility with existing telephone infrastructure (C)</p> Signup and view all the answers

In the context of broadband residential access, what role does the DSLAM play in the network infrastructure?

<p>It serves as a point of connection between multiple homes and the telco's CO (D)</p> Signup and view all the answers

Why do Korea, Netherlands, Finland, and Sweden lead in Internet access with more than 80% of households having high-speed broadband?

<p>Because they have extensive fiber optic networks in place (C)</p> Signup and view all the answers

What distinguishes DSL from cable Internet access in terms of service provider usually being the ISP?

<p>Cable Internet is typically provided by cable TV companies, not telcos (D)</p> Signup and view all the answers

Why is it common for residences located far from the Central Office (CO) to resort to alternative forms of Internet access instead of DSL?

<p>DSL standards do not support long distances between the home and the CO. (D)</p> Signup and view all the answers

In a DSL setup, what factor significantly influences the maximum transmission rate a residence can achieve?

<p>Distance between the home and the Central Office (CO) (B)</p> Signup and view all the answers

What feature contributes to the term 'asymmetric' when describing DSL Internet access?

<p>Different downstream and upstream transmission rates (A)</p> Signup and view all the answers

Why do hundreds or even thousands of households connect to a single DSLAM in a residential area?

<p>To save costs on infrastructure development (A)</p> Signup and view all the answers

What distinguishes cable Internet access from DSL in terms of infrastructure utilization?

<p>Cable Internet uses existing cable television infrastructure, while DSL utilizes telephone infrastructure. (D)</p> Signup and view all the answers

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