JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV MULTIMEDIA AND RICH INTERNET APPLICATIONS Previous Question Paper (September - 2020 - R15)

The Hyper Text Transfer Protocol (HTTP) is the foundational application-layer protocol used for distributed, collaborative, hypermedia information systems on the World Wide Web. It functions as a request-response protocol in the client-server computing model.

Key characteristics include:

• Statelessness: HTTP is inherently stateless, meaning each request is independent and the server does not retain information about previous requests unless managed via cookies or sessions.
• Request-Response Cycle: A client (typically a web browser) sends an HTTP request message to a server, which processes the request and returns an HTTP response message containing status codes and requested resources.
• Methods: It utilizes specific verbs such as GET (to retrieve data), POST (to submit data), PUT (to update resources), and DELETE (to remove resources).
• Uniform Resource Identifier (URI): HTTP uses URIs to identify and locate resources on the network.

Synchronized Multimedia Integration Language (SMIL) is an XML-based markup language developed by the W3C that allows authors to write interactive multimedia presentations. It enables the integration of audio, video, text, and images into a unified presentation with precise timing and layout control.

Key features and components include:

• Temporal Control: SMIL provides tags like <seq> (sequence) and <par> (parallel) to define how media elements are played in relation to one another, allowing for complex timing synchronization.
• Layout Control: It allows developers to define the spatial arrangement of media elements on the screen using a layout module, specifying regions and their dimensions.
• Interactivity: SMIL supports user-triggered events, such as clicking a button to start or stop a media stream, making presentations dynamic.
• Streaming Support: It is designed to be lightweight and suitable for low-bandwidth environments, making it ideal for streaming multimedia content over the internet.

By separating the structure of the multimedia presentation from the content itself, SMIL allows for flexible and reusable media components across different platforms.