SYSTEM ANALYSIS AND DESIGN
I FILL IN THE BLANKS:
1. ------------- will ensure accuracy of inputs to a computer.
Scanner
2. ------------- testing must precede Unit testing and System testing.
Module
3. Data ---------- describes every data element comprehensively.
Dictionary
4. ------------- is the use of a model in an attempt to identify and/or reflect the behavior of a real person, process or system.
Simulation
5. In -----------processing, the data are gathered for a period and collected into a group before they are entered into a computer and processed.
Batch
6. A ------------ is the primary tool used in Structured System Development to graphically depict systems.
Flow chart
7. ------------ charts are an effective means for relating input data to files are output reports.
System flow
8. ------------ is one of the methods used to capture the data for analysis of any organization’s functioning.
Interview
9. The trend continues towards more -------------- for Management Information
System.
Distributed processing
1. ----------- is the method of processing current data by both the old and the new system.
Parallel run
2. ------------ is the hardware/software boundary that permits communication between people & computers.
Interface
3. ----------- Charts are an effective means for relating input data to files and output reports.
Grid
4. Communications packages allow people to send electronic ---------- to specify users along a network of computers and workstations.
Mail
5. A ----------- questionnaire is a tool determining managerial weaknesses when evaluating internal administrative control.
Management audit
6. Gantt chart is a --------- tool for managing projects.
Planning
7. A principle of good input system design dictates that a common ---------- be established in order to keep manual tasks to a minimum.
Data representation
8. The longest sequence of events in a project is called the ----------- path.
Critical
18. The modular concept is applicable to systems design as well as ------------.
Computer programming
19. Key to address conversion is frequently found in -------------- organization method.
Direct file
20. A portion of a Program that performs a specific Program Function is called a ------
Sub routine
21. A Gantt chart is fundamentally a ------------- chart.
Bar
22. Chaining & ----------- are frequently used techniques in respect of storage of records in files.
Linking
23. The next major step before system design and after feasibility study is -----------
Analysis activity
24. MODEM is used in --------- systems.
WAN
25. ----------- is a set of programs that manage the resources of a computer system whereas application programs deliver management requirements of Information.
System software
26. As the management level goes up the hierarchy, Information becomes more and more ----------
Summarized
27. Audit, Reliability, Security are integral to ----------.
SDLC
28. Managers performing strategic function need --------- information.
External
29. The detailed investigation of the present system is referred to as -------------.
System analysis
30. Conventional file system applications are ----------.
Inflexible
31. Reason for normalization is to simplify -----------.
Updates
32. System quality requires that, unless user needs and software requirements specifications are reviewed, ----------- should not be initiated.
System design
33. ----------- testing must precede Unit testing and System testing.
Module
34. Data Dictionary describes every data element and -----------.
Data structure
35. Brainstorming and ---------- may be used to elicit Information regarding the user’s requirements.
Interview
36. A ---------- is the primary tool used in Structured System Development to graphically depict Systems.
DFD
37. --------------- is the method of current data by both the old and new system.
Parallel running
38. programmable ---------- are incorporated into programs in a Management Information System.
Decisions
39. ------------ is essential to ensure that the developer and the customer have the same perception of the system.
A review
40. ------------- is used to connect processes to each other and the arrowhead indicates direction of data transfer.
ERD
41. ------------ provides a list of each data element used in the system
Data dictionary
42. Where one has to process all the records in a file, the best organization is -----------.
Sequential
43. The fundamental data level, recorded in a data dictionary is -----------.
Data element
44. ------------- is a primary tool used in the Structured System Development to graphically depict the system.
The DFD
45. Structured English is often called ---------- because it mimics programming code.
Pseudo code
46. ---------------- is the key to Structured Analyses and Design.
Hierarchical
47. Changes made periodically to a system after its implementation is called ---------.
System maintenance
48. In most compute systems, access control is exercised by means of some form of ---------------.
Authentication
49. Defining the problem and determining the new system objectives are part of the ----------------- phase of SDLC.
System analysis
50. -------------- produces a step by step model of a proposed system.
Structured system analysis
51. “ISO 9000” concerns ------------- set up in an organization.
Quality assurance system
52. ERD stands for --------------.
Entity Relationship Diagram
53. --------------- feasibility is the assessment of a system in terms of the cost outlay it involves.
Economic
54. Systems where the processing is done by a central computer is called --------------.
Centralized system
55. A module’s connection with other modules is called ---------------.
Coupling
56. In --------------- testing, the tester has no knowledge of internals of program being tested.
Black box
57. In a DFD, processes that have inputs but produce no output are called ----------.
Black holes
58. The costs that are directly associated with a project is known as ------------.
Direct costs
59. Stubs, Entries and Rules are part of ------------.
Decision table
60. -------------------- model of the SDLC incorporates the element of risk analysis also.
Spiral model
II STATE WHETHER TRUE OR FALSE:
1. DFDs are not used for design and for analysis only.
False
2. Program flow chart is a tool for data collection.
False
3. An on-line system is always a real time system.
False
4. An open system permits interaction with the environment.
True
5. A feasibility study is required in system planning.
True
6. The term cohesion is used to denote the intra module length.
True
7. Abstract systems are conceptual, they are not physical entities.
True
8. Documentation is not at all a factor for a successful system
False
9. Abrupt Changeover is the most risky form of changeover.
True
10. DIAD stands for Data Immediate Access Diagram
True
11. A working model of a system is prototype.
True
12. An information system is a closed system
False
13. Changing of one system to another is changeover.
True
14. Tracing all activities, not affecting a piece of information is called Audit trial.
False
15. An indexed file is essentially a random file.
False
16. ERD is a tool for data modeling.
True
17. Authentication is the process of verifying the identity of a person.
True
18. Decision trees and decision tables perform same functions.
True
19. Structured English is an essential tool for system analysis.
True
20. Systems where a central computer does the processing are called centralized systems.
True
21. Programming is testing the software for quality.
True
22. The major out of analysis is system requirements.
True
23. Analyst must understand the information domain of programs to be developed.
True
24. Object oriented analysis is not a model for analysis.
False
25. Design is the first step of coding.
True
26. Requirement analysis must achieve primary objectives of the customer.
True
27. A good test case cannot find an as-yet-undiscovered error.
False
28. Software does not wear out.
True
29. Coding is after design.
True
30. Costs can be fixed or variable.
True
31. Bases path testing is a kind of white box testing.
True
32. The foundation for software engineering is process layer.
True
33. A data dictionary is used for spelling checks in a word processor.
False
34. A decision table is a pictorial representation of data flow. False
35. It is necessary to specify output requirements before determining the content of the output.
True
36. Data life cycle and SDLC are not synonymous.
True
37. Contest diagrams are applicable only to the top level.
False
38. ERD reflects the business requirements of a proposed system.
False
39. Open systems are not safe.
True
40. Aliases are included in data dictionaries.
True
41. Proto typing model is created at the problem definition stage of system development.
False
42. Entities may have similar attributes.
False
43. A program of size is greater than the size of the main memory, cannot be run.
False
44. Information means the same as data.
False
45. Decision support systems support structured decisions.
True
46. Each data flow in the DFD as a corresponding entry in the data dictionary.
True
47. Module coupling refers to the relation ship among elements with in a module.
True
48. Quality assurance is involved in every phase of the SDLC.
True
49. A prototype is essentially a complete information system but without a database.
True
50. Transaction processing and real time systems are the same.
False
51. Tangible benefits by their very nature, require to be projected at the feasibility study stage of SDLC.
True
52. The term Stub is met with in Module testing.
True
53. CASE is not used in the SDLC.
False
54. Normalization simplifies updating.
True
55. Walkthrough is not necessary in the Requirement analysis stage of the SDLC.
False
56. Error correction is least troublesome at the Requirement analysis stage.
True
57. Design specifications must include a PERT network
True
58. Program Flow charts are essential tools for data collection.
False
59. Structured English is an essential tool for System Analysis.
False
60. Maintainability is one of the Factors that determine System Quality.
True
III SHORT QUESTIONS:
1. What is a system? What are its characteristics?
2. What is the role of documentation in a system? Explain.
3. Explain any three methods of fact gathering.
4. Write a note on real time and distributed systems.
5. Compare on-site visits to questionnaires as a means of fact gathering.
6. Explain any tow conversion methods.
7. What is meant by Quality assurance?
8. What do you mean by system? Explain open systems and closed systems.
9. Compare centralized processing and distributed processing.
10. What is system conversion? Explain any two methods of system conversion.
11. What are real time systems and on-line systems? Explain.
12. Explain any two methods of fact gathering.
13. What is the role of documentation in a system? Explain.
14. What is testing? Explain unit testing and integration testing.
15. What is software debugging?
16. What is software requirement analysis?
17. What is software maintenance? Explain corrective maintenance and adaptive maintenance.
18. Explain the terms reverse engineering and Re-engineering.
19. What do you mean by code efficiency and memory efficiency?
20. Explain the different project size categories.
21. Define the importance of software requirement analysis.
22. Describe different steps in system designs.
23. Explain any five productivity factors.
24. What do you mean by the quality of software?
25. Describe object-oriented analysis.
26. Explain what is testing and debugging.
27. Discuss different project size categories.
28. What do you mean by Quality assurance?
29. Identify any two methods of doing cost benefit analysis. Write a brief note on each.
30. What are data flow diagrams? How do they differ from structure charts?
31. What is software testing? Discuss any three system testing methods.
32. Explain any two methods of fact gathering.
33. Explain the following:
a. Technical feasibility
b. Social feasibility
c. Economic feasibility
34. What is a system? Write the features of a system.
35. Write the difference between open and closed system.
36. What are the basic principles of a successful system?
37. Compare on-site visits to questionnaires as a means of fact gathering.
38. What do you mean by testing? Explain black box and white box testing.
39. What is the role of documentation in a system? Explain.
40. Differentiate tangible and intangible cost and benefits.
41. Explain the role of system analyst.
42. What are the essential features of report in the system development.
43. What is an audit trial?
44. What is the objective of testing?
45. Explain the concept of onsite observation.
46. What is “time value of money”? Why is it important while performing cost-benefit analysis?
47. Write short notes on changeover.
48. Explain the following methods of changeover
i. Abrupt cutover
ii. Staged conversion
49. Explain system analysis and design.
50. Write short notes about coding techniques.
51. Write about software selection in system analysis and design.
52. What is top down approach? Write examples.
53. What is the difference between physical DFD and digital DFD?
54. Differentiate unit testing and integration testing.
55. Explain about MIS.
56. What is software debugging?
57. What is SRS?
58. Explain the terms reverse engineering and Re-engineering.
59. Differentiate code efficiency and memory efficiency.
60. Explain about portability and flexibility.
IV ESSAYS:
1. Explain the different phases of a System Development Life Cycle with a neat diagram.
2. Explain about Fact gathering techniques used in System Planning
3. Explain different types of feasibility study and its importance in System Planning.
4. Explain the different tools used in Structured Analysis.
5. Explain briefly input design. What are the different types of system testing?
6. What is system testing? What are the different types of system testing?
7. What are the different phases of MIS development work, and briefly write about the conceptual system design phase.
8. What is maintenance? Discuss different types of maintenance and why maintenance is important.
9. Design the entire system design techniques in constructing a project.
10. What is a system? Describe the different categories of information systems.
11. Prepare a Data Flow Diagram for a college Information System. Explain in detail about it.
12. Explain the tools of Data Flow Strategy.
13. Why Data Dictionary is important in Structured Analysis? What are the advantages of Data Dictionary?
14. What methods are used for systems conversion? Describe each.
15. What is a form? Explain the various form classification and its advantages and disadvantages.
16. What is Structured Analysis? Briefly review the tools used.
17. Explain the objectives in designing an Information System.
18. Discuss different types of System Testing. Also write about different levels of testing.
19. Explain about the following:
i. Data Structure
ii. Data Dictionary
iii. Structured English
20. Explain about project management.
21. Explain about quality assurance.
22. Write about:
1. Prototype
2. DFD
3. Cost-benefit analysis
4. Data Flow
23. Differentiate between open and closed system. What are the different types of a system testing?
24. Explain about System Planning.
25. Describe the characteristics of system with some examples.
26. What do you mean by software quality? Explain software quality in terms of the following factors.
a. Reliability
b. Maintainability
c. Flexibility
d. Portability
27. Explain the MIS. Explain its significance in management.
28. a) Explain about online processing
b) Explain about onsite observation
29. What do you mean by changeover? Explain the following methods of changeover and compare them.
a) Parallel run b) Abrupt cutover c) Staged conversion
30. Explain about conversion and compare about Immediate conversion, location conversion.
