Software Engineering. No of External interfaces = 11

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1 Software Engineering Unit-1 1. (i) Describe at least one scenario where a. RAD Model would be applicable and not the water fall model Water fall model is preferable to all other models. b. Compare and contrast the different life cycle model. (Nov 2011) 2. Write short notes on a. Business Process Engineering b. Product Engineering (Nov 2011) 3. Calculate the effort and duration using the above details for basic comomo model Given, No of user inputs = 15 No of user outputs = 3 No of External interfaces = 11 1 Funtion 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 (Nov 2011) 4. Explain the following a. Water fall model b. Spiral model c. RAD model d. Prototyping model (Nov 2010) 5. (i) Elaborate on the series of tasks of a software configuration management process. (ii)describe function point analysis with neat example. (Nov 2010)

2 6. (i) Explain the methods of decomposition for software cost estimation. (ii) Mention the challenges of risk management. (Nov 2010) 7. Discuss any four process models with suitable application. (Nov 2010) 8. Discuss in detail the project structure and programming team structure of a software organization. (Nov 2010) 9. (i) Describe water fall model incremental, iterative water model and spiral model based SLCS and compare (Nov 2012) 10. How the software products are classified? Discuss briefly about business process engineering and product engineering. (Nov 2012) 11. How the cost of a software is estimated using i. Function point metric model ii. COCOMO (by three methods) What is the contribution of the technology complexity factor in function point model? 12. Write short notes on the following i. PERT and CPM for scheduling ii. RMMP iii. Estimatics iv. Software maintenance cost

3 Unit-2 1. Explain the execution of seven distinct functions accomplished in requirement engineering process. (nov 2010) 2. 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 fro you to develop a system that. i. Collects information from caller about the driver performance and behavior 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 onduty manager. Analyse the problem statement and list major functions to be incorporated with the SRS document. (nov 2011) 3. How does the analysis modeling help to capture unambiguous and consistent requirements?discuss several methods for requirements validation. (nov 2011) 4. Describe the requirement engineering process and how the requirements are managed. (nov 2012) 5. Explain the functional and behavioural models for software requirement process. (nov 2012) 6. (i) Differentiate functional and non functional requirements.(nov 2013) (ii) For the requirement given below,identify stakeholders functional and non functional requirements:

4 A software is to be built that will control an Automated Teller Machine(ATM).The ATM Machine services customers 24*7.ATM has a magnetic stripe reader for reading an ATM card,a keyboard and display for interaction with the customer,a slot for depositing envelopes,a dispenser for cash a printer for printer for printing receipts and a switch that allows an operator to start/stop a machine. The ATM services one customet at a time. When a customer inserts an ATM card and enters the personal identification number(pin),the details are validated for each transaction.a customer can perform one or more transaction.transactions made against each account are recorded so as to ensure validity of transactions. If pin is invalid customer is required to re-enter PIN.before making a transaction.if customer is unable to successfully enter PIN after three tries,card is retained by machine and customer has to contact bank The ATM provides the following services to the customer: i. Withdraw cash in multiples of 100. ii. Deposit cash in multiples of 100. iii. Transfer amount between any two accounts. iv. Make balance enquiry. v. Print receipt. Each of the above transactions must be made within 60 seconds.in case the time exceeds 60 seconds,then the transaction is cancelled automatically.also if the machine is not used for more than two minutes after entry of card,the card is retained by the machine. An operator panel with a key-operated switch allows an operator to start and stop the servicing of customers. When the switch is moved to the off

5 position the machine will shut down,so that theoperator may remove deposit envelopes the reload the machine with cash blan receipts,etc.the operator is required to verify and enter the total cash on hand before starting the system from this panel. (nov 2013) 7. State and explain the requirements engineering tasks in detail. (nov 2009) 8. What are the components of the standard structure for the software requirements document?explain in detail. (May 2014) 9. Write the software requirement specification for the system of your choice (May 2014) 10. Differentiate functional and non functional requirements (non 2014) 11. Explain the steps involved in initiating requirements engineering.

6 Unit Explain the fundamental software design concepts in detail (2009) 2. Explain the following: a. SCM repository b. SCM process 3. Explain the core activities involved in User interface design process with necessary block diagrams. (nov 2010) 4. Explain the various modular decomposition and conrol styles commonly used in organizational model. (nov 2010) 5. Explain clearly the concepts of coupling and cohesion?for each type of coupling give an example of two components coupled in that way? 6. Write short notes on i. Architecture design ii. Data acquisition design 7. Discuss about software architecture design,with emphasize on far in,far out coupling cohesion and factoring. (nov 2012) 8. What are the characteristics of a good user interface design?describe how UID may be developed for a data acquisition system.(nov 2012) 9. What is system modeling?explain the process of creating models and the factors that should be considered when building models. 10. Tamilnadu Electricity Board (TNEB) would like to automate its billing process.customers apply for a connection (domestic/commercial).eb staffs take readings and update the system.each customer is required to pay charges bi-monthly according to the rates set for the type of connection.customers can choose to pay either by cash/card.a bill is generated on payment.monthly reports are provided to the EB manager. i. Give a name for the system. ii. Draw the level 0 DFD (context flow diagram) iii. Draw the level- DFD.

7 11. Explain in detail about any four architectural styles. (May 2014) 12. (a) What are the characteristics of a real-time system?explain why real-time systems usually have to be implemented using concurrent processes. (b) Illustrate with the aid of an appropriate example how to design a real-time monitoring and control systems. 12. Explain the following design concepts: (i) Abstraction (ii)modularity (iii)patterns (iv)functional independence. (nov 2014) 13. (i) What is real time system? (ii) Explain monitoring and control systems using as example a burglar alarm system. (iii) Explain why real time systems usually have to be implemented using concurrent processes. (nov 2014)

8 Unit (a) Describe the testing objectives and its principles. (b) Explain the basics path testing in detail (nov 2009) 2. (i) What is need for software maintenance and maintenance report? (ii) What are the attributes of a good test? Explain the test case design. 3. (i) What is white box testing? (ii) Explain how basis path testing helps to derive test cases to test every ststement of a program. 4. (i) Define :regression testing. (ii) Distinguish :top down and bottom down integration (iii)how is testing different from debugging?justify. (nov 2010) 5. Write a program for sorting of n numbers.draw the flow chart, flow graph, find out the cyclomatic complexity. 6. Design a black box testing for an under water submarine. (nov 2011) 7. Write elaborately on white box testing for a software.how do you develop test suites. (nov 2012) 8. Discuss the software implementation techniques and debugging guidelines. (nov 2012) 9. Given a set of numbers n the function find prime (a [],n) prints a number if it is a prime number. Draw a control flow graphs, calculate the cyclomatic complexity and enumerate all paths. state how many test cases are needed to adequately cover the code in terms of

9 branches decisions and statement? Develop the necessary test cases using sample values for a and n. (nov 2013) 10. (i) What is black box testing? (ii) What is Equivalence class partitioning?list rules used to define valid and invalid equivalence classes. Explain the technique using examples. 11. Explain in detail about the integration testing. (may 2014) 12. Explain in detail about basis path testing (may 2014) 13. (i) Given a set of n numbers,write an algorithm that finds whether a given number is positive, negative,zero,even or odd. Finallly the total number in each category is also printed. draw the flow graph and enumerate paths for testing. Determinate the number of independent paths using cyclomatic complexity. (ii) Given: (1) x=2,y=12; for i=1 to x+y-1 print ( good luck ); next i; (2) for i= 1 to m for j =i+1 to n print i,j;

10 next j next i write the rules applicable for testing loops. Apply the same to the above and list the test cases. 14. (i) What is system testing? Discuss types of system tests (ii) Explain the debugging process.

11 Unit (i) Explain the CASE repository functions in details. (ii) Explain the various methods encountered in cost estimation? 2. Software project scheduling does not differ from scheduling of any other multitask engineering projects : Discuss (nov 2009) 3. (i) Elaborate on the series of tasks of a software configuration management process (ii) Describe function point analysis with neat example. (nov 2010) 4. (i) Expain the methods of decomposition for software cost estimation. (ii) Mention the challenges of risk management. (nov 2010) 5. (i) with a suitable example explain the change control process in detail (ii) why are case tools usually costly? Explain (nov 2011) 6. (i) With a neat sketch draw the architecture model for an integration framework for CASE tool and explain them. (ii) Calculate the effort and duration using the above details for basic COCOMO model. Given, Number of user inputs = 15 Number of user outputs = 3 Number of external interfaces = 11 1function 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 = (nov 2011) 7. How the cost of a software is estimated using (i) Function point metric model

12 (ii) COCOMO(by three methods) What is the contribution of technology complexity factor in function point model? 8. Write short notes on the following: a. PERT and CPM for scheduling b. RMMP c. ESTIMACS and d. Software maintenance cost (nov 2012) 9. (i) Explain the COCOMO model for estimation. (ii) State ZIPF s law (iii) What is the purpose of Delphi method? State advantages and disadvantages of the method. 10. What is software configuration management? Explain various aspects of configuration management. (nov 2013) 11. (i) What is COCOMO model? Explain in detail. (iii) What are CASE tools? Explain the role of CASE tools in software development process. 12. (i) Elaborate on software configuration management. (ii) What are the categories of software risks?give an overview about risk management. (May 2014) 13. (i)explain function point approach to establish size of a project. (ii) Compute function point value for a project with the following information domain characteristics: No of external inputs 30 No of external outputs 52

13 No of external inquiries 22 No of log files 12 No of external interface files 2 Assume complexity adjustment values for above are average (4,5,4,10,7 respectively) (nov 2014) 14. (i) Explain the Delphi method for estimation. (ii) What is software Configuration management? (iii) Write short notes on the change control process. (nov 2014)

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING UNIT-1

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING Year & Semester : IV Subject Code : CS6403 Subject Name : Software Engineering Degree & Branch : B.E & CSE UNIT-1 1. What is software engineering? 2. What