Chapter 18 Names For Computers

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Chapter 18 - Names For Computers

• Introduction
• People Prefer Names To Numbers
• Naming A Computer Can Be Difficult Or Fun
• Compuer Names Must be Unique
• Each computer on the Internet must have a unique
  name or the name would not distinquish the
  compter from all others.
• Suffixes On Computer Names
• Because a suffix appended to the name of a
  computer identifies the organization that owns
  the computer and the type of the organization,
  the full names of any two computers owned by
  separate organizations are guaranteed to differ
  from one another.

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Chapter 18 - Names For Computers

• Names With Many Parts
• Domain Names Outside The US
• uk, au, ca, ch, es, de
• Translating A Name To An Equivalent IP Address
  (try nslookup jaring.nmhu.edu from the command
  line)
• Domain Name System Works Like Directory
  Assistance

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Chapter 18 - Names For Computers

• Computer Name Lookup Is Automatic
• A computer on the Internet only needs to know the
  location of one domain name server. A program
  becomes a client of the domain name service when
  it sends a computer's name to the local domain
  name server. The local server answers the request
  by translating the name into an IP address.
  Although the server may contact remote servers to
  obtain the information, the client receives an
  answer from the local server.
• IP Addresses And Domain Names Are Unrelated
  except that a domain is typically assigned a
  "group" of IP addresses, ie. nmhu.edu has the
  group of addresses 192.132.89.0-255 and
  207.66.121.0-255 as well as several other groups
  of addresses

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Chapter 18 - Names For Computers

• Terms
• computer name
• domain name
• domain name server
• Domain Name System (DNS)