JNTU
JNTU MCA 2018 MOBILE APPLICATION DEVELOPMENT Previous Question Paper (June/July - 2018 - R13)
Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 8 marks.
Part A
List out the challenges faced in the designing of mobile application and small computing devices.
Answer
Designing for mobile and small computing devices involves several key challenges: 1) Limited Hardware Resources, including restricted processing power, limited RAM, and small storage capacities. 2) Display Constraints, such as small screen sizes, low resolutions, and varying aspect ratios. 3) Power Management, where battery life is a critical bottleneck requiring energy-efficient code. 4) Connectivity Issues, characterized by intermittent network availability, high latency, and varying bandwidth speeds.
Write the life cycle of MIDlet.
Answer
The MIDlet lifecycle is managed by the Application Management Software (AMS) through three primary states: 1) Paused: The MIDlet is initialized and waiting for resources; the startApp() method is not yet called. 2) Active: The MIDlet is running and interacting with the user; triggered by the startApp() method. 3) Destroyed: The MIDlet has released all resources and is ready to be terminated; triggered by the destroyApp() method.
Describe Alert class and various type of alerts in J2ME.
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What is ANY test? Write the rules for ANY test.
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Describe the Connection class.
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Part B
Give the detail account on cellular networks.
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Explain how J2ME application balance the load between client and server.
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What is radio transmission and also describe the purpose of carrier signal in radio transmission.
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List the best practices to design J2ME application and explain briefly.
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Describe Manifest and JAD files of J2ME application.
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With a neat sketch, elaborate the layers of J2ME architecture.
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Explain the key code and game code of canvas.
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Write MIDP application to display mutable and immutable images on the form.
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Explain the steps to sort the mixed data type records in record enumeration and illustrate with an example program.
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How the data is stored in the mobile? Explain in detail.
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Develop a MIDlet Application to login to HTTP Server from a J2ME Program and also read the data from HTTP server.
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How do you perform the transmission in mobile application whenever the network is slow? And also design MIDP application to perform the transmission in this context.
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