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  • 更新 2022-09-03
  • 科目 英语
  • 题型 阅读理解
  • 难度 中等
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Technically the domain name system consists of three parts. First is the addressing system of Internet Protocol(IP)numbers, the 32-bit numbers that are the true addresses of computers connected to the Internet. Next is the naming system, the by-now familiar names that include .com .org .edu .etc., which are collectively known as top level domains, or TLDs. The naming system was devised to find a computer or send email. Finally, there is the routing system, which “maps” domain names to IP numbers. Computers called “root servers” contain a kind of giant directory that links specific names to specific addresses on the Internet.
There are several political headaches about domain names that have no clear solutions. Because domain names have to be unique, they are inevitably linked to trademark disputes when two or more businesses, or people, want the same name.
Domain names also raise issues of privacy. Using a search tool such as the Whonami Global Internet Name Search site, anyone can look up the name and address of whoever is registered as the owner of a domain name.
In 1998, the U.S. government handed over management of the entire domain name system to the Internet Corporation for Assigned Names and Numbers, or ICANN, based in Marina Del Rey. ICANN’s board of directors held one of its periodic general meetings recently in Stockholm, an event that featured an outpouring of frustration and controversy about how the group is managing its new responsibilities.
If you want to send email, you must own the following except          .

A.a computer
B.the addressing system
C.a domain address
D.a telephone line or cable

Which of the following is NOT true?

A.The domain name system was once under the control of the U.S. government.
B.The general meeting of ICANN is held on a regular basis.
C.Two businesses can have the same domain names.
D.Search sites help people to get information about domain name owners.

The purpose of naming system was to          .

A.link specific names to specific addresses on the Internet
B.find people on computers.
C.distinguish computers or send email
D.solve problems for businesses and people

Domain names which have no clear solutions          .

A.cause people’s headache
B.cause difficult situations for the government
C.get businesses to change their trademarks
D.force businesses to put trademarks on their goods.
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Technicallythedomainnamesystem