Domain Name System There are several applications in the application layer of the Internet model that followthe client/server paradigm. The client/server programs can be divided into two categories:those that can be directly used by the user, such as e-mail, and those that support otherapplication programs. The Domain Name System (DNS) is a supporting program thatis…
Network Models A network is a combination of hardware and software that sends data from one location to another. The hardware consists of the physical equipment that carries signals from one point of the network to another. The software consists of instruction sets that make possible the services that we expect from a network. We…
HTTP The Hypertext Transfer Protocol (HTTP) is a protocol used mainly to access data on the World Wide Web. HTTP functions as a combination of FTP and SMTP. It is similar to FTP because it transfers files and uses the services of TCP. However, it is much simpler than FTP because it uses only one…
World Wide Web The World Wide Web (WWW) is a repository of information linked together from points all over the world. The WWW has a unique combination of flexibility, portability, and user-friendly features that distinguish it from other services provided by the Internet. The WWW project was initiated by CERN (European Laboratory for Particle Physics)…
JavaScript Operators JavaScript operators are symbols that are used to perform operations on operands. For example: Here, + is the arithmetic operator and = is the assignment operator. There are following types of operators in JavaScript. Arithmetic Operators Comparison (Relational) Operators Bitwise Operators Logical Operators Assignment Operators Special Operators JavaScript Arithmetic Operators Arithmetic operators are…
JavaScript If-else The JavaScript if-else statement is used to execute the code whether condition is true or false. There are three forms of if statement in JavaScript. If Statement If else statement if else if statement JavaScript If statement It evaluates the content only if expression is true. The signature of JavaScript if statement is given below. JavaScript…
