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Unformatted text preview: tion. Hosts are often thought of as a single computer, although many computers can
operate under a single host name and many hosts can also be run off a single computer.
You don’t buy a domain name but can register it, paying for a renewable right to use that
domain name. Domains need to be registered within a generic top‐level domain such as “. com”
or “. org” or within a two‐character country code top‐level domain such as “. uk,” “. ly,” or “. md. ”
Registering a domain that uses someone else’s trademark in an attempt to extract financial gain
is considered cybersquatting. The United States and other nations have anticybersquatting laws,
and I CANN has a dispute resolution system that can overturn domain name claims if a registrant
is considered to be cybersquatting. Every device connected to the I nternet has an I P address. These addresses are assigned by the
organiz ation that connects the user to the I nternet. An I P address may be assigned temporarily,
for use only during that online session.
We’re running out of I P addresses. The current scheme (I Pv4) is being replaced by I Pv6, a
scheme that will give us many more addresses and additional feature benefits but is not
backward compatible with the I Pv4 standard. Transitioning to I Pv6 will be costly, take time, and
introduce delay when traffic transfers between I Pv4 and I Pv6 networks.
The domain name system is a distributed, fault‐tolerant system that uses nameservers to map
host/domain name combinations to I P addresses. QU E S TI ONS AND E XE RC I S E S
1. Find the Web page for your school’s information systems department. What is the URL that gets
you to this page? Label the host name, domain name, path, and file for this URL. Are there
additional subdomains? I f so, indicate them, as well.
2. Go to a registrar and see if someone has registered your first or last name as a domain name. I f
so, what’s hosted at that domain? I f not, would you consider registering your name as a domain
name? Why or why n...
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This document was uploaded on 01/31/2014.
- Winter '14