WEB BROWSER, WEB ADDRESS, WEB PAGE NAVIGATION, WEB SEARCHING

 WEB BROWSER

A web browser, or browser is software that enables users with an internet connection to access and view web pages on a computer or mobile devices

-web pages provide links to other related web pages 

-downloading is the process of receiving information from a server on the internet.

-uploading process of transferring documents, graphics and other objects from a computer to a server on the internet.

WEB ADDRESS

A web page has a unique address called a URI( uniform resource lacator) or web address

purpose URL is to search the location of web page 

-A web browser retrieves a web page using its web browser

consists of;

-protocol

-domain name

-path

-web page name 

examples:

http://www.bankislam.com.my/home/personal-banking/electronic-banking/internet-banking/introduction/

http://

hypertext transfer protocol

- a set of rules that define how pages transfer on the internet

https://

hypertext transfer protocol secure

ftp://

file transfer protocol

WEB PAGES NAVIGATION

hypermedia

- is not constrained to be text-based it can include other media, e.g: graphics, images, and especially the continuous media-sound and video

tabbed browsing allow to open and view multiple web pages in a single web browser window 

WEB SEARCHING

two types of web searching:

-search engine

-subject directory 

SEARCH ENGINE

- a software that finds web sites, web pages, images, videos, news, maps or other information related on a specific topic 

SUBJECT DIRECTORY

- classifies web pages in an organized set of categories

EXAMPLES

- AltaVista

-Yahoo!

-Google

-Exite

THE INTERNET ADDRESS

Ip address is a number that uniquely identifies each computer or device connected to the internet.

also referred to as IP number and internet address

sometime called a dotted decimal number or dotted quad

IP USAGE

- a way to specific server or computer on the internet or a network

IP STRUCTURE

-IP addresses usually consists of four groups of number each seperated by a period

-number each group between 0 and 255

-32 bit long. each group is 8 bits long 

- written for example: 128.35.0.72

5 CLASSES OF IP ADDRESS (A,B,C,D,E,F)

IP VERSION

- two versions of the internet protocol (IP) are use in

- IP version 4 (IPv4)

- IP version 6 (IPv6)

IPv4

IPv6

INTERNET SERVICE PROVIDER

INTERNET SERVICE PROVIDER

A company that provide internet connections and services to individuals and organizations

ACCESS PROVIDER

A business that provides individuals and organizations access to the internet for free or for a fee

RESPONSIBLE OF ISP

- providing and maintaining a connection to the internet

- support the hardware and software needed to service that connection

- to protect their site and network from external threats such as viruses, hackers attacks and other illegal activities.

- provide 24-hour customer service and tchnique support

DIFFERENCES DIAL-UP & BROADBAND

criteria	Dial-up connection	Broadband
speed	slow,maximum speed is 56 kbps	faster, can go up to several megabytes per second
equipment	less equipment compare to broadband	more than dial-up connection (eg: fiber optic cable)
availabiliy	can be accessed anywhere via a telephone line	has become more and more widespread over the last few years

THE INTERNET CONNECTION

THE DIAL-UP CONNECTION 

  TWO TYPE OF DIAL-UP CONNECTION  

1. CONVENTIONAL DIAL-UP

2. ISDN ( integrated service digital network )

ISDN( integrated services digital network )

characteristics of ISDN

-faster, but pricey

-doesn't tie up phone line

-used by business and individuals 

ADVANTAGES AND DISADVANTAGES OF DIAL-UP CONNECTION

INTERNET, EXTRANET & INTRANET

DEFINITION OF INTERNET

the internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.

DEFINITION OF INTRANET

an intranet(intra means within) is an internal network that uses internet technologies

DEFINITION OF EXTRANET

 an extranet is a portion of a company's network that allows customers or suppliers of a company to access parts of an enterprise's intranet.