Computer Science : S5 : L1+2: WWW and How web pages are located
Internet - Is a collection of networks which helps everything connect to each other
World Wide Web - Part of the internet that the user can access as a collection of web pages
URL (Uniform Resource Locator) is used to access a website and display web pages. The user must put in the website's address which is the URL and is a unique text based address that relates to a web page. The web address is made up of (PHDLR)
Protocol - A protocol is a set of rules that allows two devices to communicate
Host - WWW
Domain Name - Official name of a website
Location - Location of what you are searching for in a website
Resource - portion of source where you get the information eg.org
HTTP and HTTPS - Hypertext Transfer Protocol: Is a way for clients and servers to send and receive requests and deliver HTML web pages. The S stands for Security as the website is encrypted and secure and is used with sensitive data and information
A web server is a computer that hosts a website. A web server can host many websites and stores each page of the website and its related content. To retrieve information it is known as downloading. A computer that accesses information from a website server is referred to as a client.
Web servers do :
Hosting websites
Dealing with client requests
They can be stored as text, HTML, CSS or Javascript and is stent to a browser with various rules to render it correctly so then can be seen on the receiving/clients screens
Domain Name Server : Websites are written in HTML and hosted on a web server. To display pages from a particular website your browser needs to know the IP address for that website which it looks for in the Domain Name Server, (DNS)
Webserver and Clients : The client requests a URL via a web browser
The browser sends the domain name to a domain name server (DNS)
The DNS maps the domain name to an IP address and returns it to the browser
A GET request for the web page is sent to the web server using its IP address
The requested web page is returned to the client’s web browser
Internet - Is a collection of networks which helps everything connect to each other
World Wide Web - Part of the internet that the user can access as a collection of web pages
URL (Uniform Resource Locator) is used to access a website and display web pages. The user must put in the website's address which is the URL and is a unique text based address that relates to a web page. The web address is made up of (PHDLR)
Protocol - A protocol is a set of rules that allows two devices to communicate
Host - WWW
Domain Name - Official name of a website
Location - Location of what you are searching for in a website
Resource - portion of source where you get the information eg.org
HTTP and HTTPS - Hypertext Transfer Protocol: Is a way for clients and servers to send and receive requests and deliver HTML web pages. The S stands for Security as the website is encrypted and secure and is used with sensitive data and information
A web server is a computer that hosts a website. A web server can host many websites and stores each page of the website and its related content. To retrieve information it is known as downloading. A computer that accesses information from a website server is referred to as a client.
Web servers do :
Hosting websites
Dealing with client requests
They can be stored as text, HTML, CSS or Javascript and is stent to a browser with various rules to render it correctly so then can be seen on the receiving/clients screens
Domain Name Server : Websites are written in HTML and hosted on a web server. To display pages from a particular website your browser needs to know the IP address for that website which it looks for in the Domain Name Server, (DNS)
Webserver and Clients : The client requests a URL via a web browser
The browser sends the domain name to a domain name server (DNS)
The DNS maps the domain name to an IP address and returns it to the browser
A GET request for the web page is sent to the web server using its IP address
The requested web page is returned to the client’s web browser
