Internet Technologies Web App Design And Development — DU B.Sc. (Hons) Computer Science Previous Year Question Papers

Type of the course : Generic Elective Time : 3 hours b) Section-A is compulsoi.y. Q1. a) Explain the followingterms: Describe the signiflcance of sQLite database in Android application. Explain Date and Time picker in Android application with its methods. Draw the lifecycle of an activity. List the different types of views in Android application. Draw the hierarchical directory structure of an Android application. Write a program to send an SMS from an Android application. Differentiate between JVM and DVM. Write steps to develop an Android application. Q2. a) Explain the Android architecture with a neat diagram, highlighting the function of each layer. b) Write code to demonstrate the complete Activity lifecycle by overriding all lifecycle methods and logging their execution sequence. c) Explain ADT (Android Development Tools) Plugins in detail by describing their purpose. Q3. a) Implement SQLite database operations by creating a Student Management System with table: Students (id, name, roll_no, marks). Write methods for insertstudent(), getAllstudents(), updateMarks(), and display data in Recyclerview with delete option for each record. b) Analyze the Activity Lifecycle by writing code that demonstrates state transitions. Create an application that logs each lifecycle method call to Logcat, saves and restores data using onsavelnstancestate(), and shows a Toast when the activity is destroyed. c) Develop a custom dialog that appears when a button is clicked. The dialog should contain title as "Thanks", message as "Do you want to proceed?", two buttons "Yes" and "No". Write the code to handle button click events. Q4. a) Create an Android application to design a Student Registration Form similar to the layout shown in Figure 1. b) Create a fragment-based application with MainActivity hosting two fragments. 5 Fragment A should contain a ListView with five items, and Fragment B should display details when a list item is clicked. Implement fragment communication using interfaces. Q5. a) Analyze Android application components by providing detailed explanation of Activities and Services. b) Writing a complete AndroidManifest.xml file for a messaging application that 5 requires permissions for SMS, Contacts, Internet, and Camera. c) Explaining the significance of each element in the manifest file including 5 < application›, ‹service>, <receiver>, <provider>, and <uses-permission> 26. a) Describe the layers of iOs architecture and their role in application. 5 development (with a neat diagram). b) What is iOS SDK? Discuss tools, libraries, and APIs provided by the ios 5 c) Discuss basic data types, constants, and variables in Swift. 5 Q7. a) Describe common controls UIButton, UILabel, UlTextField, UlSwitch, and 5 UlSlider with their uses. b) Explain how MapKit is used to display maps, annotations, and routes in an iOS 5 c) Describe the working of Accelerometer and Gyroscope sensors in iOS. 5