Names n Stuff

Objectives

• Know what is meant by:– Internet– Intranet– URL – Uniform Resource Locator– URI – Uniform Resource Identifier– Protocol

• Understand the parts of a URL– http://www.google.com/phone/offers

Traceroute – showing the steps

• Try it• http://centralops.net/co/• Put in a web address……• Be patient

The big picture

ICANN IETF IABThe councils

RegistrarRegistrar

Registrar Verizon ATT NTT Deutche Telekom

BT Cable and Wireless

Sky PlusNet

You

Names P192 of the Book

URI versus URL

• What is the difference?

URI versus URL

• What is the difference?

“A URI is an identifier for some resource, but a URL gives you specific information as to obtain that resource.”“ A URI is a URL”“Generally, if the URL describes both the location and name of a resource, the term to use is URI.”

See if you can register a name

• Think of a domain name• Choose a Registrar– (Licenced by ICANN to do this)– www.godaddy.com– www.simplynames.com

• Search to see if the name is available• Proceed to register it if you can

Objectives

• Know what is meant by:– Internet– Intranet– URL– Protocol

• Understand the parts of a URL– http://www.android.com/devices/

Examiner’s favourite question

• Internet– Latin inter = among/between– Worldwide network of networks, using the TCP/IP

protocol• Intranet– Latin intra = within– Private network, using the same technologies as

the Internet (TCP/IP)