Web development Concepts

 Internet

 network of networks developed and running on the platform of  on the TCP/IP communications protocol.

examples of services provided via internet are

• email
• e banking
• e tourism
• e commerce
• e learning
• e marketing
• e business
• e governance

 WWW

This  refers to a system with universally accepted standards for storing, formatting and displaying information in a networked environment. Information is stored as electronic ―pages‖ that contain text, graphics, animations, sound and video.

 WWW  services are

•   online teaching/instruction. 
•    sharing of information to online users.  .
•    participation in  discussion forums
•    online testing.in convenient locations
  

Managerial issues critical for the successful implementation of WWW:

•  Proper planning of resources e.g. funds, hardware, and software required, personnel  required, etc
•   Adequate control mechanisms have to be put in place to ensure security of the system.
•   Training of staff to ensure they are competent with the system.
•   Education of staff on the importance of WWW so as to reduce potential resistance to the  introduction of WWW into an organization. 
• Reengineering of business procedures to accommodate WWW where possible in order to  ensure maximum utilization.

 HTTP

HTTP stands for Hypertext Transfer Protocol. This is the protocol that govern how text and graphics is displayed in internet

URL

URL stands for Uniform Resource Locator, it is the basic network identification for any resources connected to the internet

 Website

collection of pages written in HTML language.

Components of Web 

• computer .
• Web browser
•  internet connection 
• Web server
• Routers & Switches  

factors to consider when designing a website 

• Search engine -create a search engine friendly website
• Visitor-consider visitors needs and interest
• cost-cost of setting up the website and acquiring the resources needed
• technology-always consider the technology available so that you use up to-date technology
• organizational requirements-always consider the business needs of the organization
  

Advantages of a website 

• it can be used to establish a company brand
• i provides you with a platform to show case your work
• it can be used for 24/7 business operations
• provides a platform of online interaction hence increasing customer satisfaction
• it exposes a company in to a global platform hence increasing customer reach

Disadvantages of a website

• it is expensive to set up
• it can some time expose a company sensitive  information of care is not taken

Tools required to build a website 

• Computer
• text editor
• internet connection 
• web browser 
• web server
•  FTP client 

 Web Server

it is the server where a website is placed.eg Apache,Internet information service etc

 Web Browsers

software that is used to access the web eg fire fox,internet explorer

SMTP Server

SMTP stands for Simple Mail Transfer Protocol Server. helps in email delivery from one server to another.

 ISP

ISP stands for Internet Service Provider. this are companies that enable business and users to connect to the Internet

DNS

DNS stands for Domain Name System. ,the introduce domain names which are mapped into ipaddresses
Domain Names
domains come with various types examples 

• .com − for company/commercial  website.
• .net −  for a network of sites.
• .org −  for non-profit organizations.
• .us, .in − they are country domains
• .biz − for business
• .edu −for educational institution
• .tv − for television site
• .gov-for government site

Domains can be divide into sub domains eg opencertify.google.com

 W3C

W3C stands for World Wide Web Consortium which is an international consortium of companies that in charge of managing the web and internet