1. What is the need for computer graphics? Ans.Graphical communication is an old and more popular method of exchanging information than verbal communication and is more convenient when computers are utilized for this purpose. As the volume of information increases, problem of storage arises. Also, in the 21st century people do not have time to [...]

Introduce computer graphics as a revolutionary development in the field of computer sciences. Tell the students that William Fetter invented the term computer graphics in 1960. Explain the term computer graphics followed by the history of computer graphics hardware. Conduct an open discussion on the applications of computer graphics. You may discuss the applications of [...]

1. What is SSL? Why do you require SSL? Ans.SSL or Secure Socket Layer is a protocol that authenticates Web sites to browsers.  It is also used for encrypting communication between browser  and Web servers. To enable SSL, you simply need to install digital certificates or Server ID. The main role of SSL is to [...]

Introduce security as a major concern for data exchanged over the Internet by giving examples of hacking and misuse of data. Explain SSL to the students. Shift focus to recent developments in the Internet domain and introduce XML as a revolutionary technology for data description, exchange, and storage. Explain XML in detail using ample examples. [...]

. What are the several ways of tracking users? Ans. The several ways in which you can track users are: n  Using hidden controls n  Using cookie n  Using sessions n  Using applications 2. Explain in brief how to use hidden controls in a web page? Give an example. Ans. Using HTML, hidden controls are [...]

Start the session by explaining the concept of HTTP-statelessness. Explain why and in what situations it is important to maintain ‘state’ and track users. In this context, identify the various ways in which you can keep track of users in a Web application. Explain and demonstrate the use of cookies in a Web application. You [...]

1. What are servlets? Explain with an example? Ans.Servlets are programs that run on a Web server and create Web pages on the fly.  To be a servlet, a class should extend HttpServlet and override doGet or doPost or both methods, depending on whether data is sent by GET or POST. These methods take two [...]

The following section provides some additional information from the industry perspective that you can share with the students: Getting All Request Headers Many reusable servlet codes especially the ones used for parsing and filtering parameters are made generic. That is, instead of handling or pre-knowing any particular request parameter they are developed to serve a [...]

Introduce Java Server Pages (JSP) as one of the most popular Web technologies. At this stage, describe ASP and explain how it is different from JSP. During this discussion identify benefits of JSP. Introduce servlets and compare them to JSP. It is essential that students identify the usage and domains of each. Ideally servlets should [...]

Recall the brief introduction to Web and application servers from session one of this module. Explain in detail what a Web server and an application server are and differentiate between them. Explain how Web servers work. Explain some important HTTP headers referring to the Focus Areas section. Also, enumerate some of the popular application servers [...]

Introduce the concept of CGI referring to the concept of Web applications as discussed in the first session of this module. Tell the students that e-mail Websites, online-shopping Websites, astrological Websites are nothing but applications residing on a server that are executed over a network from a remote client instead of actually executing them on [...]

1. Can JavaScript be run on the server? Ans: Many Web servers support JavaScript as a server side scripting language. In this case, JavaScript can be executed on the server and not on client’s browser. JavaScript (Jscript under IIS) is allowed to access server resources. If server side JavaScript is embedded in an HTML page [...]

1. What is Web? What is the difference between Internet and Intranet? Ans.A Web is a complex network of international, cross platform, and cross cultural communicating devices, connected to each other without any ordering or pattern. Internet and Intranet are both networks. However, the Internet is a network of networks, involving all communicating devices over [...]

1. What is Java Script? List out uses of Java Script.? Ans. JavaScript is a scripting language used to make interactive web pages. It is mostly used as a client side scripting language. Its uses include: n  Control document appearance and content n  Control the browser n  Interact with document content n  Interact with user [...]