Sunday, July 29, 2012

HIGH SPEED NETWORKS CS2060 PREVIOUS YEAR YEAR ANNA UNIVERSITY NOV/DEC 2011 QUESTION PAPER


B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Seventh Semester
Electronics and Communication Engineering
CS2060 — HIGH SPEED NETWORKS
(Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer ALL questions.
PART A — (10 × 2 = 20 marks)
1. List and explain the types of frame relay messages.
2. Give some examples of ATM applications.
3. State the key characteristics to be considered for deriving the analytic
equations for the queuing model.
4. What are meant by choke packets?
5. What is meant by a credit allocation scheme?
6. List and explain the mechanism available for supporting rate guarantees in an ATM GFR service.
7. List some requirements for inelastic traffic.
8. State and explain the types of PHBs for differentiated services.
9. List the various reservation attributes and styles of the RSV Protocol in detail.
10. What is meant be traffic engineering?
PART B — (5 × 16 = 80 marks)
11. (a) (i) With a neat sketch explain the various fields of an ATM cell. (10)
(ii) Discuss the various non real time ATM services. (6)
Or
(b) (i) Explain the fiber channel protocol architecture in detail. (8)
(ii) Give the requirements of wireless LAN in detail. (8)
12. (a) (i) Describe the single server queuing model with its structures and parameters. (10)
(ii) Explain the Kendall’s notation and the common distributions for the queuing model. (6)
Or
(b) (i) Explain in detail the explicit and implicit congestion signaling.(8)
(ii) List and explain the frame relay congestion control techniques.(8)
13. (a) (i) Describe the TCP implementation policy details. (8)
(ii) List and explain the categories of switch algorithms used for ATM congestion control and fair capacity allocation. (8)
Or
(b) Discuss in detail the ways in which TCP deals with the calculation of retransmission timers. (16)


14. (a) (i) Explain the Integrated services architecture and the QoS support functions. (8)
(ii) List and explain the various categories of Integrated services Architecture. (8)
Or
(b) Explain the Random Early Detection. (16)
15. (a) Explain the design goals and characteristics of the Resource reservation protocol in detail. (16)
Or
(b) Explain the RTProtocol architecture and draw its header format. (16)

POWER ELECTRONICS EE2301 ANNA UNIVERSITY NOV/DEC 2011 QUESTION PAPER ANNA UNIVERSITY,CHENNAI


B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fifth Semester
Electrical and Electronics Engineering
EE 2301 — POWER ELECTRONICS
(Common to Instrumentation and Control Engineering)
(Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer ALL questions.
PART A — (10 × 2 = 20 marks)

1. State the condition to be satisfied for the load commutation in SCR.
2. Define ‘Turn off time’ of SCR.
3. Give any two differences between single phase full converter and semi converter?
4. What is meant by line commutated inverter?
5. What are the advantages of SMPS over phase controlled rectifiers?
6. Give the uses of resonant switching.
7. What is meant by current source inverter?
8. Why is the series inverter called so?
9. What are the applications of cyclo converter?
10. What is Integral cycle control?
PART B — (5 × 16 = 80 marks)
11. (a) Describe the current commutation technique to turn off the SCR with neat sketch and waveforms. (16)
Or
(b) With neat sketch explain the turn on and turn off characteristic of SCR. (16)
12. (a) Explain the working of a three phase full converter with ‘R’ load for the firing angles of 60°, 90° and 150°. (16)
Or
(b) (i) Explain the operation of a single phase full bridge converter with RL load for continuous and discontinuous load currents. (10)


(ii) A single phase full bridge converter is connected to ‘R’ load. The source voltage is of 230 V, 50 Hz. The average load current is of 10 A. For R = 20 _ find the firing angle. (6)
13. (a) Explain the working of Buck–Boost converter with sketch and waveforms and also drive the expression for SI . (16)
Or
(b) With a neat sketch and output voltage waveforms, explain the working of full bridge SMPS. (16)
14. (a) With a neat sketch and output voltage waveforms, explain the working of three phase bridge inverter in 180 degree mode of operation. (16)
Or
(b) Discuss the different modes of operation of series resonant inverter with unidirectional switch with neat circuit diagram and waveforms. (16)
15. (a) Discuss the working of 2 stage sequence control of AC voltage controller. (16)
Or
(b) Discuss the working of a 3 phase to single phase cyclo-converter with neat voltage and current waveforms. (16)

SOFTWARE ENGINEERING CS2301 ANNA UNIVERSITY PREVIOUS YEAR MODEL QUESTION PAPER NOV/DEC 2011


B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fifth Semester
Computer Science and Engineering
CS 2301 — SOFTWARE ENGINEERING
(Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer ALL questions.
PART A — (10 × 2 = 20 marks)
1. For the scenario described below, which life cycle model would you choose? Give the reason why you would choose this model. You are interacting with the MIS department of a very large oil company
with multiple departments. The have a complex legacy system. Migrating the data from this legacy system is not an easy task and would take a considerable time. The oil company is very particular about processes, acceptance criteria and legal contracts.
2. Differentiate verification and validation. Give an example.
3. Name the metrics for specifying Non-functional requirements.
4. Draw the DFD notations for the following.
(a) External entity
(b) Data items.
5. Explain the qualitative criteria for measuring independence.
6. Distinguish fan in and fan out.
7. In unit testing of a module, it is found for a set of test data, at maximum 90% of the code alone were tested with the probability of success 09. What is the reliability of the module?
8. What is the purpose of Regression testing? What are the two main activities of Regression testing?
9. State the need for software configuration review.
10. List any five CASE tools classified by function in the taxonomy of CASE tools.
PART B — (5 × 16 = 80 marks)
11. (a) (i) Describe at least one scenario where
(1) RAD model would be applicable and not the waterfall model. (5)
(2) Waterfall model is preferable to all other models. (5)
(ii) Compare and contrast the different life cycle models. (6)
Or
(b) Write short notes on :
(i) Business Process Engineering. (8)
(ii) Product Engineering. (8)
12. (a) An independent truck company wants to track and record its drivers driving habits. For this purpose the company has rented 800 phones numbers and has printed the numbers on the front, back and sides of all trucks owned by the company. Next to the 800 numbers a message is written “PLEASE REPORT ANY DRIVER OR TRUCK PROBLEM BY CALLING THIS NUMBER”. The hacking company waits for you to develop a system that :
(i) Collects information from caller about the driver performance and behaviour as well as truck condition,
(ii) generates daily and monthly reports for each driver and truck management.
(iii) reports problems that require immediate action to an on-duty manager. Analyse the problem statement and list major functions to be incorporated with the SRS document.
Or
(b) How does the analysis modeling help to capture unambiguous and consistent requirements? Discuss several methods for requirements validation.


13. (a) Explain clearly the concepts of coupling and cohesion? For each type of coupling give an example of two components coupled in that way?
Or
(b) Write short notes on
(i) Architecture design. (8)
(ii) Data acquisition system. (8)
14. (a) Write a program for sorting of n numbers. Draw the flow chart, flow graph, find out the Cyclomatic complexity.
Or
(b) Design a black box testing for an Under Water submarine.
15. (a) (i) With a suitable example explain the Change Control Process in detail. (8)
(ii) Why are CASE tools usually costly? Explain. (8)
Or
(b) (i) With a neat sketch draw the architecture model for an integration framework for CASE tool and explain them. (8)
(ii) Calculate the effort and duration using the above details for basic COCOMO model. (8)
Given,
Number of user inputs = 15
Number of user outputs = 3
Number of external interfaces = 11
1 function point = 20 LOC (as fourth generation language is used). Values of constant used in basic COCOMO model. a = 2.4, b = 1.05, c = 2.5, d = 0.38.

JAVA PROGRAMMING IT2301 NOV/DEC 2011 ANNA UNIVERSITY PREVIOUS YEAR QUESTION PAPER


B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011.
Fifth Semester
Information Technology
IT 2301 — JAVA PROGRAMMING
(Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer ALL questions.
PART A — (10 × 2 = 20 marks)
1. Define Encapsulation.
2. What is an abstract class?
3. What is the purpose of ‘final’ keyword?
4. What is polymorphism?
5. State the difference between inner class and anonymous class?
6. What is interface and mention its use.
7. Which Java.util classes and interfaces support event handling?
8. Which class is the top of the AWT event hierarchy.
9. Give the differences between process and thread.
10. What is synchronization?
PART B — (5 × 16 = 80 marks)
11. (a) (i) What is inheritance? Explain with examples. (8)
(ii) What are access specifiers? Discuss them in the context of Java. (8)
Or
(b) Write a detailed discussion on constructors. (16)
12. (a) (i) What is dynamic binding. Explain with a real time example. (8)
(ii) Write a note on class hierarchy. How do you create hierarchical classes in Java? (8)
Or
(b) Give a brief overview on java packages. Write necessary code snippets. (16)
13. (a) (i) What is object cloning? Discuss with examples. (8)
(ii) What is reflection? Explain. (8)
Or
(b) Write short notes on the following :
(i) Graphics programming (8)
(ii) Frame (8)
14. (a) (i) Give an introduction to Swings. (8)
(ii) What is an adapter class? Explain its purpose and functionality.(8)
Or
(b) Discuss the concept of exception handling with an application of
your choice. Write necessary code snippets. (16)
15. (a) (i) Where can we write Generic? Explain with a simple example. (6)
(ii) What is multithreading? What are the methods available in Java for inter-thread communication? Discuss with an example.(10)


Or
(b) (i) Write a note on thread synchronization. (6)
(ii) When you will synchronize pieces of your code? Explain with examples. (10)