Software Reengineering - Process and Advantages

The five-stage reengineering process (translation, reverse engineering, restructuring, modularization, data reengineering), its cost/risk advantages over replacement, and legacy system wrapping

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QUESTION OF

Views #: 4

Questions #: 12

Time: 10 minutes

Pass Score: 80.0%

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Goal of Software Reengineering

1 pts

volume_mute

What is the primary goal of software reengineering?

To convert all programs into exactly the same programming language across an entire industry

To improve the structure and understandability of a legacy system, generally without changing its functionality

To permanently delete obsolete code without any analysis

To completely rewrite a system with entirely new functionality and features

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What Reengineering May Involve

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Which of the following activities can be part of the software reengineering process? Select all that apply.

Redocumenting the system

Adding completely new business functionality not previously requested

Modifying and updating the structure and values of the system's data

Refactoring the system architecture

Replacing the original requirements specification with entirely new business goals

Translating programs to a modern programming language

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Two Advantages of Reengineering Over Replacement

1 pts

Match each advantage of reengineering to its correct explanation.

To complete the line match

Click on an item in the first group
Click on the match in the second group

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Advantage

Reduced cost

Reduced risk

Explanation

The cost of reengineering may be significantly less than the cost of developing entirely new software

Redeveloping business-critical software from scratch carries high risk of specification errors, development problems, and delays

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Five Activities in the Reengineering Process

1 pts

Fill in the blanks to complete the names of the five reengineering process activities: source code (1), reverse (2), program structure improvement, program (3), and data (4).

Please drag and drop the selected option in the right place or type it instead

engineering

modularization

translation

reengineering

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Source Code Translation

1 pts

volume_mute

What does the source code translation activity in reengineering accomplish?

It converts source code directly into a finished marketing presentation

It converts a program from an old programming language to a more modern version of the same language, or to a different language

It permanently deletes all comments from the source code

It removes all functions and procedures from the original program

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Reverse Engineering Purpose

1 pts

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What does reverse engineering accomplish within the reengineering process?

It deletes the original program permanently once analysis is complete

The program is analyzed and information is extracted from it to help document its organization and functionality

It builds an entirely new system from a blank specification with no reference to the original program

It converts business requirements directly into marketing materials

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Program Modularization and Architectural Refactoring

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What might program modularization involve when a system uses several different data stores?

Renaming all variables in the program to single letters

Architectural refactoring to consolidate the system to use a single repository instead of multiple data stores

Adding even more separate data stores to increase redundancy

Deleting all the data stores without any replacement

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Data Reengineering Process

1 pts

volume_mute

Which of the following are part of data reengineering during software reengineering? Select all that apply.

Redefining database schemas to reflect program changes

Converting existing databases to a new structure

Automatically generating brand-new business data with no relationship to the original system

Permanently encrypting all historical data so it can never be read again

Finding and correcting mistakes in the data

Removing duplicate records

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Not All Reengineering Steps Are Always Required

1 pts

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Under what condition would source code translation NOT be needed in a reengineering project?

If the application's existing programming language is still going to be used

If the application has more than 10,000 lines of code

If the original developers are still employed by the company

If the system has never had any bugs reported against it

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Legacy System Wrapping

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What is the purpose of developing adaptor services as part of legacy system wrapping?

To permanently disable all of the legacy system's original functionality

To physically wrap server hardware in protective packaging for shipping

To hide the original interfaces of the legacy system and present new, better-structured interfaces usable by other components

To prevent any other system from ever interacting with the legacy system again

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Cost Spectrum of Reengineering Approaches

1 pts

Please drag and drop the options to sort them

Sort the following reengineering approaches from lowest cost to highest cost.

Program and data restructuring

Automated source code conversion (cheapest)

Restructuring plus architectural changes (most expensive)

Automated restructuring with manual changes

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Practical Limits of Reengineering

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What is a key practical limitation of software reengineering compared to building a brand-new system?

Reengineering can be performed without any cost whatsoever using fully automated tools in all cases

Major architectural changes, such as converting a functional system to an object-oriented one, cannot be carried out automatically and are very expensive

Reengineering is illegal for systems older than 10 years

Reengineering always produces a system that is more maintainable than a newly developed system

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Undergraduate Professional

Goal of Software Reengineering

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Explanation

What Reengineering May Involve

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Explanation

Two Advantages of Reengineering Over Replacement

Advantage

Explanation

Correct Answer

Explanation

Five Activities in the Reengineering Process

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Explanation

Source Code Translation

Correct Answer

Explanation

Reverse Engineering Purpose

Correct Answer

Explanation

Program Modularization and Architectural Refactoring

Correct Answer

Explanation

Data Reengineering Process

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Explanation

Not All Reengineering Steps Are Always Required

Correct Answer

Explanation

Legacy System Wrapping

Correct Answer

Explanation

Cost Spectrum of Reengineering Approaches

Correct Answer

Explanation

Practical Limits of Reengineering

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Explanation

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