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Wireless Local Loop (WLL)

Self-Test
1. Much of the growth of WLL in the future will come from emerging economies because it is an efficient way to deliver POTS for millions of subscribers.
a. true
b. false
2. The reason that WLL is attractive to developed countries is that it allows operators to bypass wireline networks to deliver basic telephone service and data access.
a. true
b. false
3. GSM is the digital-cellular standard that is most suited to WLL applications because of its high capacity, high quality voice, and high level of privacy.
a. true
b. false
4. Ease and speed of service implementation, scalability, versatility, maintenance, and reliability make WLL the preferred alternative to copper from an economic standpoint.
a. true
b. false
5. Market estimates show that the demand for WLL in emerging economies will be due to the fact that the demand for new POTS services will exceed the ability of the PTTs to install copper wire.
a. true
b. false
6. The market for WLL is huge, but various market segments require the right system costs and features. Therefore, more than one technology will evolve as the leader, depending on the application.
a. true
b. false
7. What two issues that will determine how quickly WLL will be deployed in developed markets?
a. cost and population
b. population and geography
c. geography and politics
d. cost and bandwidth
8. Which of the following is not one of the five categories across which WLL will be implemented?
a. digital cellular
b. CT–2/DECT
c. proprietary implementations
d. none of the above
9. Which of the following technologies has significant advantages in medium-density and high-density population areas because it is capable of carrying higher levels of traffic, provides better voice quality, and can transmit data at higher rates?
a. GSM
b. PCS
c. CT–2
d. DECT
10. An important consideration for WLL is that it can be deployed and activated very quickly. It is feasible to deploy and activate a system within which of the following amounts of time?
a. 10 to 15 days
b. 15 to 30 days
c. 90 to 120 days
d. 180 to 360 days
11. Analysts predict that the cost of WLL will continue to decline rapidly, while which of the following is predicted to happen to the cost of installing copper?
a. increase slowly
b. decrease slowly
c. stay the same
d. increase rapidly
12. Various WLL technologies and deployment options should be evaluated in terms of which of the following?
a. population density of the service area
b. connection costs
c. level of penetration
d. all of the above

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