DCA7201 MOBILE APPLICATION DEVELOPMENT

Description

SESSION	April 2026
PROGRAM	MASTER OF COMPUTER APPLICATIONS (MCA)
SEMESTER	IV
COURSE CODE & NAME	DCA7201 MOBILE APPLICATION DEVELOPMENT

 

 

Set – 1

 

Q.1. Explain the evolution and history of Mobile Operating Systems. Discuss the resource constraints in mobile devices and explain how mobile OS manages CPU, memory, and power.

Ans 1.

Evolution and History of Mobile Operating Systems

The story of mobile operating systems starts in the early 1990s when the first personal digital assistants appeared. These early devices ran proprietary software with very limited capabilities. The Nokia communicator model was released in 1996 and is one of the first attempts at creating the smartphone’s look and function featuring a multi-function operating system. Palm OS, launched in 1996, was one of the first popular mobile operating system systems, created specifically for handheld devices with stylus-based touchscreens. Symbian OS, originally developed by Psion it became the predominant smartphone operating system in the early 2000s, after Nokia implemented it widely across their

 

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Q.2. Explain the core principles of microkernel architecture. How do these principles enhance system reliability, security, and maintainability?

Ans 2.

Core Principles of Microkernel Architecture

Microkernel architecture is a approach to operating systems that puts the core operations in the kernel. running everything else in user space as separate functions. A microkernel’s fundamentals contains only hardware abstraction the basic scheduling of processes, inter-process communication, and memory protection. File systems, device drivers as well as network stacks and other kernel-space

 

 

Q.3. Explain the Android Activity Lifecycle. Describe each lifecycle state and callback method with a suitable diagram and its significance in mobile application development.

Ans 3.

Android Activity Lifecycle

The Android Activity Lifecycle is the fundamental idea within Android application development that defines the conditions an Activity goes through from creation to destruction. The understanding of this process will allow developers to create applications that behave correctly, conserve the system’s resources and offer users with a seamless experience during interruptions by phone call, screen rotation or

 

 

Set – 2

 

Q.4. Explain Role of Layouts in Android UI Design. Discuss the significance of Layout Hierarchy and View Group concepts.

Ans 4.

Role of Layouts in Android UI Design

Layouts form the primary element that form the basis of Android user interface design. Layouts establish the design of an UI screen, by arranging views elements like buttons, text fields pictures, and more widgets in a ViewGroup container. Layouts decide how these elements are positioned, sized and displayed in relation to one another in the screens. If layout management is not properly managed, creating adaptive user interfaces that work across hundreds of Android devices with different screen sizes and densities

 

 

 

 

Q.5. Explain the intents and broadcasts in IPC of Mobile Communication.

Ans 5.

Inter-Process Communication in Android

Inter-process communication within Android is primarily achieved through Intents and Broadcasts, which provide a flexible and loosely coupled messaging system allowing different application components as well as separate apps to exchange messages using direct method calls and shared memory.

Intents

An

 

Q.6. Explain Quantum Cryptography. What are Future Prospects of Quantum Cryptography?

Ans 6.

Quantum Cryptography

Quantum cryptography is a technique of protecting communication, which utilizes the basic principles of quantum mechanics to provide theoretically secure encryption. Unlike classical cryptography, which is based on the computational complexity of mathematical problems such as taking large numbers into account quantum cryptography gets its protection by physical laws that