Division of Computing

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1 Division of Computing BSc Computing CSY2026 Modern Networks Date of Issue: 10/02/2017 Date for Submission: Agreed Date for late submission: Student Name: Student ID: Student s Signature: Module Tutor: Signed: 30/04/2017 (23:59 by e-submission) Espen Svennevik This assignment is weighted as 50% of the Module's assessment Assessment Feedback Aspect Excellent Good Satisfactory Needs some more work Virtual Demo (Screen shots) 25% Explanation of TCP and UDP examples. 25% Design of extensions to app 10% Implementation of extensions to app 20% Testing 10% Report Quality 10% Needs much more work Specific aspects of the assignment that the marker likes: Specific aspects of the assignment that need more work: Tutor s Signature: Date: Grade: The University of Northampton s Policy on Plagiarism & Mitigating Circumstances will be strictly implemented. By submitting this signed assignment you are asserting that this submission is entirely your own individual work.

2 Modern Networks Assignment 2 - CSY2026 Finish Date: 30 th April, 2017 By e-submission by 23:59 Aims & Objectives To enable the student to understand and extend mobile distributed computing applications, on the Android platform, utilising web services, Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) as well as local and remote databases embedded within Android applications. Brief: Explain and contrast the two different Android chat program implementations, using TCP and UDP (Download at Pay special attention to: How connections are established How chat conversations are carried out Limitations of the example Apps Using either or both implementations, as a basis, extend both by adding new useful features, which enhance the user messaging experience. New features may include Activity for connecting to the server (IP address and port) Activity for login with username and password logging of conversations to files or sqlite loading of stored messages on app start up using a mixture of UDP, TCP and web services for messaging using multiple servers simultaneously netcat functionality These extra features are only suggestions and are not exhaustive. The app should use a full range of Android GUI elements, multiple Activities, network connectivity and utilise database (local and/or remote) storage. Deliverables A report needs to be electronically submitted through TurnItIn by Sunday April 30 th by 23:59. Your report should include the following sections: Introduction Virtual Demonstration of your app (screen shots showing step by step use of your programs). Explanation of the implementation of the TCP and UDP Android chat examples. Design of your extensions to the TCP / UDP Android chat app. This should include GUI design, algorithms to be used and data structures. Implementation of your extensions to the TCP / UDP Android chat app. This is the explanation of the code which implements the design. Testing of your extensions. This should include a test plan, test results and screen shots. Conclusions Appendices. This should include annotated source code Please note that the work you produce must be your own and you may be asked for a viva. Espen Svennevik

3 Grading Criteria: See detailed assessment rubric and checklist. Learning objectives This assessment corresponds to the following Learning Objectives as detailed in the Module Specification document: Knowledge and Understanding c. Understand and explain the principles of mobile device programming to a satisfactory level. Subject specific skills d. Satisfactorily evaluate and use networks, in both fixed and mobile contexts, that are used for device programming. e. Evaluate and appraise the use of modern networks used in fixed and mobile contexts to an adequate level. f. Design and implement programs for use on modern networks. Key Skills g. Competently identify relevant sources of information h. Communication. Write clearly about complex subjects in a form adequate to the purpose. i. Managed Learning: Satisfactorily make, justify and implement decisions following evaluation of options. j. Problem solving: Develop skills to satisfactorily design and implement appropriate software and systems.

4 Personal Development & Key Skills (for your PDP) This assignment provides an opportunity to add to your personal development portfolio as indicated below: Key Skill Y/N 1 Managing the Learning Process: Ability to evaluate learning styles, identify strategies for approaching study tasks, manage and organise oneself taking responsibility for decision-making, targetsetting and delivery of action. 2 Communication Skills: The ability to express, discuss and present knowledge, ideas and viewpoints to a variety of audiences with confidence and clarity. 3 Groupwork: The ability to work harmoniously and productively as a member of a group in a variety of roles, demonstrating an awareness of group dynamics, appropriate inter personal and interactional skills. 4 Information Skills: The ability to identify information needs, access and evaluate a range of relevant sources, organise and use information efficiently and effectively for both academic and professional purposes. 5 Problem Solving: The ability to identify problems and to apply concepts, principles and techniques in order to generate solutions, choose between alternatives and take appropriate action. 6 Use of IT: The ability to effectively use key information technology and appropriate software to assist in the learning process through research and retrieval, communication and manipulation of information in various forms. 7 Application of number: The ability to understand, interpret and use numerical and graphical information accurately and effectively. Remember to consult and completing your Key Skills Checklist or Skills Development Plan as appropriate, to help you to identify current strengths and how you can build on these, as well as highlight areas that need improving. At the end of each year you can complete a new skills checklist/plan, based on your learning experiences. Year 1: Year 2: Year 3 0generic.doc

5 Checklist The layout of your assignment should follow this: Introduction o Short introduction to the assignment o Short background on TCP and UDP for Android o Explanation of the implementation of the TCP and UDP Android chat examples. o For TCP How connections are established Show the lines of code that connect to the server Explain the lines of code which connect to the server How chat conversations are carried out Show and explain the line(s) of code, which gets the text from the GUI. Show and explain the line(s) of code, which send the messages to the server. Show and explain the line(s) of code which, receive the messages from the server. Show and explain the line(s) of code, which displays the message in the GUI. Limitations of the example Apps: What can t they do Can you make them crash o For UDP How connections are established Show the lines of code that connect to the server Explain the lines of code which connect to the server How chat conversations are carried out Show and explain the line(s) of code, which gets the text from the GUI. Show and explain the line(s) of code, which send the messages to the server. Show and explain the line(s) of code which, receive the messages from the server. Show and explain the line(s) of code, which displays the message in the GUI. Limitations of the example Apps: What can t they do Can you make them crash (what happens if the server isn t running?) Design of your extensions to the TCP / UDP Android chat app. o What will your extensions look like? o How will your extensions work (algorithm pseudo code)? o What data structures will you need for the extensions o If you use databases, database design. Implementation of your extensions to the TCP / UDP Android chat app. This is the explanation of the code, which implements the design. For each design extension: o Show the code, which implements the extension o Explain the code, which implements the extension Testing of your extensions. This to test that your implementation meets your design. This should include a test plan, test results and screen shots. For each extension o How will you test the extension A test plan o Test results Pass on fail Screen shots as evidence

6 Virtual Demonstration of your app (screen shots showing step by step use of your programs). o Starting the server o Starting the app o Sending messages o The extensions o App closedown Conclusions. o Difficulties o Limitations o Future improvements Appendices. This should include annotated source code of your code for the app with the extensions.. Report quality should include o Table of contents o Page numbers o Use of sections o References

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