Code: DC-06                 Subject: ANALYSIS AND DESIGN OF INFORMATION SYSTEMS

Time: 3 Hours                                                                                                     Max. Marks: 100

NOTE: There are 9 Questions in all.

· Question 1 is compulsory and carries 20 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.

· Out of the remaining EIGHT Questions answer any FIVE Questions. Each question carries 16 marks.

· Any required data not explicitly given, may be suitably assumed and stated.

Q.1       Choose the correct or best alternative in the following:                                         (2x10)

a. Mistakes made in the requirements analysis stage show up in 

(A)  system design                               (B)  system development

(C)   system testing                              (D)  system implementation

b. The systems conversion technique of totally removing the existing system and immediately implementing the new system is known as

(A) crash conversion                           (B)  phased conversion

(C)  pilot conversion                            (D)  parallel run

             c.   Elapsed time between initiating a query and receiving a response is called

(A)  response time                             

(B)  waiting time

(C)  processing time                           

(D)  turnaround time

             d.   The first step in Systems Development Life Cycle is

(A)  database design                           (B)  system design

(C)  preliminary investigation               (D)  graphical user interface           

& analysis

             e.   Which of following is not considered as a tool for the system design phase?

(A) Piechart                                       (B)  Data-flow diagram

(C)  Decision table                               (D)  System flowchart

             f.    A group of related fields, is known as

(A) tuple                                            (B) schema

(C)  record                                          (D  file

g.   Changes made periodically to a system, after its implementation, is known as system.

(A) analysis                                        (B)  design

(C) development                                  (D)  maintenance

             h.   Direct access organization

(A) means storing records in contiguous blocks according to a key.

(B) stores records sequentially but uses an index to locate records.

(C) uses an index for each key type.

(D) has  records placed randomly throughout the file.

             i.    System design aid should primarily

(A) help analyze both data and activities

(B)  help in documentation

(C)  help in programming

(D)  generate code

             j.    A square symbol in DFD

(A) defines a source or destination of system data.

(B) identifies data flow

(C) represents a process that transforms incoming data flow(s) into outgoing data flows.

(D) is a temporary repository of data.

Answer any FIVE Questions out of EIGHT Questions.

Each question carries 16 marks.

Q.2     a.   Differentiate between open systems and closed systems.                                     (3)

             b.   Explain different categories into which information can be classified.                    (6)

             c.   Define system maintenance.  Explain different types of maintenance.                    (7)

Q.3     a.   Explain the steps used for transforming a DFD into a structure chart.                   (8)

             b.   Explain prototyping. What are the benefits of prototyping in SDLC?                    (8)

Q.4     a.   Write down the functional requirements of a library and draw its level-O DFD.                   (8)

b.   Explain in detail various types of interactions used while designing GUIs.             (8)

Q.5     a.   Explain any two tools used for data organization and analysis.                             (7)

     b.   List the problems faced while collecting user requirements.                                  (4)

c.   Explain different types of modules used in a structure chart.                                 (5)

  Q.6     a. Discuss some of the information gathering methods.                                            (8)

             b.   Give the classification of different types of forms with an example of each.           (8)

Q.7     a.   Explain in detail ER model used to represent the static view of a problem domain.               (8)

b.   What is a data dictionary? What are the points that should be considered while constructing a data dictionary? Write the data dictionary entry for student course registration form.                   (2+3+3)

Q.8     a.   What are the steps involved in feasibility analysis? Explain economic feasibility.                   (7)

             b What are the different cost elements that are considered while developing cost estimates for a system?                                                                    (5)

     c.   Write a short note on decision table.                                                                   (4)

Q.9           Write short notes on any TWO:                                                                            

(i) Object Oriented Requirement Analysis.

(ii) Top-Down Design.

(iii) Different levels of testing.                                                       (8+8)