Pemrograman Berbasis Web01 - Introduction

Informatics DepartmentParahyangan Catholic University

Internet V.S. Web

Internet is a network of connected computers The purpose is to share information The standard to transfer data/ documents/

informations over a network are known as protocols (HTTP, FTP, e-mail, etc.)

Web, short for “world wide web” (www) is one of the ways that the Internet lets people browse documents connected by hypertext links. It uses Hypertext Transfer Protocol (HTTP)

Web

The principle of the Web is based on using hyperlinks to navigate between documents (called "web pages") with a program called a browser.

A web page is a simple text file written in a markup language (called HTML) that encodes the layout of the document, graphicalelements, and links to other documents, all with the help of tags.

Client V.S. Server

Web pages are hosted on a distant computers called web servers, as opposed to the client represented by the browser

Internet

Every computer and device connected to Internet is assigned a unique numeric IP Address

Domain Name System (DNS) allows us to refer to the server by its domain name

DNS server matches domain names to their respective IP addresses

For example: the computer that hosts oreily.com has the IP address of 208.201.239.100

URLs

Every resources on the Web has its own special address called a URL (Uniform Resource Locator)

A complete URL is generally made of three

components: the protocol, the site name, and the absolute path to the document or resource:

URLs

Tugas

1. Baca tentang web hosting di:http://www.w3schools.com/website/web_host_intro.asp (9 halaman tutorial). Minggu depan ada pre-test, bahannya dari slide ini + tutorial web hosting

2. Cari & daftar ke salah satu web hosting gratis (ada iklan tidak apa-apa)