Full Stack Web Development Ii — DU B. Voc – Web Designing Previous Year Question Papers

What is Node. j s? Explain its main features and advantages. 5 Differentiate between fs. readFile O and fs. readEilesync O in 5 Node . j s, and provide an example demonstrating their usage. Explain how request handling works in a Node. j s HTTP server. Illustrate 5 the process with a diagram showing the request flow. What is the difference between loca1 and global packagesin Node. js? 5 List and explain any three key elements of a porn. xml file. 5 What is Express . j s? Describe any two of its key features. 5 Explain the working of aq,nchronous file reading in Nodejs using the fs module. Write a program that performs the following tasks: i. Open the file fruit. txt asynchronously. ii. Read its contents in chunks of5 bltes using abuffer and recursively concatenate them to form the complete string. iii. Display the total contents of the file on the console after all chunks have been read. Explain how Node. j s handles incoming requests, including the roles of the event loop, event queue, and thread poo1, with the help of a diagram. Explain how a Node . j s server handles dynamic GET rcquests ard generates a response. write a Node . j s program that: i. Creates a server listening on port 8 0I0. ii. Sends a dynamic HTML rcsponse containing an array of messages [ ' Helfo Worfd' , ' From a basic Node. j s server' ' Take Luck' I. iii. Use res. write O to strea:n the HTML and res. end O to finalize the response. b) Describe the role of the Response object in Express, including setting 7 headers, status codes, and sending responses. Implement an Express program to demonstrate this. 4 a) Explain how cookies are managed in Express using cookieParser, and 7 write a program to set a user cookie with a 1-hour lifespan. b) Explain how to perform CRUD (Create, Read, Update, Delete) 8 operations in MongoDB using Node. js. Write code examples to demonstrate the following tasks: i. Inserting a new document into a collection. ii. Retrieving documents from the collection. iii. Updating an existing document. iv. Deleting a document from the collection. 5 a) Explain the distinctions between Git, GitHub, and GitLab, outlining the 8 specific roles of each platform. Provide examples demonstrating their application in a standard software development workflow. b) Explain the architecture of Jenkins. Describe the roles of the Master node, 7 Agent nodes, and how jobs are executed in this setup. 6 a) Compare Virtual Machines (VMs) and Docker containers. 8 Highlight at least three key differences and their impact on resource utilization. b) Define the Project Object Model (POM) in Maven. Explain its 7 significance and the key elements it contains. 7 a) Discuss the properties of the cookie option in cookieSession, including 7 maxAge, path, httponly, and signed. How do these properties affect session management? b) Explain the purpose and usage of res. json () and res. jsonp() in 8