COMPUTER NETWORKING LESSON 4: DNS AND WWW

DOMAIN NAME SYSTEM

DNS MEANING

WORLD WIDE WEB

WWW MEANING

DNS

an Internet

service that translates domain names into IP addresses.

PHONE BOOK

DNS are the Internet's equivalent of a — —-.

INTERNET PROTOCOL

IP MEANING

GOOGLE PUBLIC DNS

operates recursive name servers for public use at

the two following IP addresses: 8.8.8.8 and 8.8.4.4 for IPv4 service, as well as

2001:4860:4860::8888 and 2001:4860:4860::8844, for IPv6 access.

ROOT SERVERS

The authoritative name servers that serve the DNS root zone, commonly

known as the “— —-”, are a network of hundreds of servers in many

countries around the world.

ROOT SERVERS

contain the information that makes up the root zone, which

is the global list of top level domains.

ROOT SERVER SYSTEM

System consists of over

1000 individual machines (known as root server “instances”), which hold DNS root

data.

INTERNET ASSIGNED NUMBERS AUTHORITY

IANA MEANING

INNTERNET CORPORATION FOR ASSIGNED NAMES AND NUMBERS

ICANN MEANING

TOP LEVEL DOMAIN

TLD MEANING

13

HOW MANY ROOT SERVICES RESPOND TO THE QUERIES THEY RECEIVER EITHER WITH INFORMAITON FOUND IN THE ROOT ZONE AS IT IS MANAGED BY IANA FUNCTIONS OPERATED BY ICANN?

IANA

is a standards organization (1998) that oversees the global IP addresses

allocation, autonomous system number allocation, root zone management in DNS,

media types, and other Internet Protocol-related symbols and numbers.

ICANN

is non-profit private organization (1998 in California, USA) responsible for

the technical coordination of the Internet's domain name system (DNS) ensuring

the network's stable and secure operation.

TWO CHARACTER TERRITORY CODES

The country code top-level domains (ccTLD) based on the—- —- —- —- of country abbreviations.

GOC, EDU, COM , MIL, ORG, NET AND INT

WHAT ARE THE SEVEN GENERIC TLD?

WWW

is an architectural framework for accessing linked

documents spread out over millions of machines all over the Internet.

1989

WHEN DID WWW BEGAN

EUROPEAN COUNCIL FOR NUCLEAR RESEAFCH

CERN MEANING

CERN

- is a European research organization (1954) that operates the largest

particle physics laboratory in the world. The WWW was invented by British

Scientist Tim Berners-Lee in 1989 while working at CERN.

TIM BERNERS LEE

WHO INVENTED WWW

HYPER TEXT

The idea of having one page point to another is called —-

HTML

The markup (formatting) language for the

web.

HYPER TEXT MARKUP LANGUAGE

HTML MEANING

UNIFORM RESOURCE IDENTIFIER

A kind of “address” that is unique and used to

identify to each resource on the web. It is also commonly called a

UNIFORM RESOURCE IDENTIFIER

URI MEANIG

HYPER TEXT TRANSFER PROTOCOL

Allows for the retrieval of linked resources

from across the web.

HYPER TEXT TRANSFER PROTOCOL

HTTP MEANING

WORLDWIDEWEB.APP

WHAT IS THE FIRST WEB PAGE TIM WROTE?

HTTPD

FIRST WEB SERVER TIM DID

MIT

IN 1994 WHERE INSTITUTION TIM MOVED?

MASSACHUSETTS INSTITUTE OF TECHNOLOGY

MIT MEANING

WORLD WIDE WEB CONSORTIUM

W3C MEANING

W3C

an international

community devoted to developing open web standards.

WORLD WIDE WEB FOUNDATION

IN 2009 WHAT DID SIR TIM CO FOUNDED?

ROSEMARY LEITH

WHO IS THE CO FOUNDER OF TIM IN WWWF?

WORLD WIDE WEB FOUNDATION

is fighting for the web we want: a web

that is safe, empowering and for everyone.

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

NASA MEANING

INFORMATION SCIENCES INSTITUTE

WHAT DOES ISI MEAN HERE?University of Southern

California (ISI)

RESEAUX EUROPEENS NETWORK COORDINATION CENTRE

RIPE NCC MEANING

WIDELY INTEGRATED DISTRIBUTED ENVIRONMENT

WHAT DOES “WIDE” MEAN IN WIDE Project

8.8.8.8 and 8.8.4.4

example of google public dns in ipv4

2001:4860:4860::8888 and 2001:4860:4860::8844

example of google public dns in ipv6

1954

WHEN DID CERN OPERATES THA LARGEST PARTICLE LABORATORY IN THE WORLD>?