PRO:Design & Develop Wdws-Based Appl by Using MS.NET Frmwk : 70-548(CSharp) Exam
Product DescriptionExam Number/Code: 70-548(CSharp)
Exam Name: PRO:Design & Develop Wdws-Based Appl by Using MS.NET Frmwk

“PRO:Design & Develop Wdws-Based Appl by Using MS.NET Frmwk”, also known as 70-548(CSharp) exam, is a Microsoft certification. With the complete collection of questions and answers, Pass4sure has assembled to take you through 80 Q&As to your 70-548(CSharp) Exam preparation. In the 70-548(CSharp) exam resources, you will cover every field and category in MCPD helping to ready you for your successful Microsoft Certification.
Exam news
This Professional Developer (PRO) exam, Exam 70-548: PRO: Designing and Developing Windows-Based Applications by Using the Microsoft .NET Framework, became available on May 15, 2006.

Audience profile
Candidates for this exam work on a team in a medium or large development environment that uses Microsoft Visual Studio .NET 2003 Enterprise Developer or Visual Studio 2005. Candidates should have at least two years of experience developing Microsoft Windows-based applications by using the Microsoft .NET Framework. Candidates should have a working knowledge of Visual Studio 2005.

Candidates should have at least three to four years of on-the-job experience dedicated to Windows-based application development and should have worked in the following phases of the application life cycle:

• Technical envisioning and planning

• Design and development

• Stabilizing and releasing

Credit toward certification
When you pass Exam 70-548: PRO: Designing and Developing Windows-Based Applications by Using the Microsoft .NET Framework, you earn credit toward the following certification

• Microsoft Certified Professional Developer: Windows Developer

Code languages
When the exam begins, you can choose the programming language in which the code segments will appear. The available code languages for this exam are:

• Microsoft Visual Basic 2005

• Microsoft Visual C# 2005

• Microsoft Visual C++ 2005

Preparation tools and resources
To help you prepare for this exam, Microsoft Learning recommends that you have hands-on experience with the product and that you use the following training resources. These training resources do not necessarily cover all of the topics listed in the “Skills measured” section.

Classroom training Microsoft E-Learning Microsoft Press books Practice tests
There is no classroom training currently available.
There is no Microsoft E-Learning training currently available.
MCPD Self-Paced Training Kit (Exam 70-548): Designing and Developing Windows-Based Applications Using the Microsoft .NET Framework

CLR via C#: Applied Microsoft .NET Framework Programming, Second Edition

Debugging Microsoft .NET 2.0 Applications
MeasureUp
(Measureup.com)

Self Test Software
(Selftestsoftware.com)

Microsoft online resources
• Learning Plan: Get started with a step-by-step study guide that is based on recommended resources for this exam.

• Microsoft Learning Community: Join newsgroups and visit community forums to connect with your peers for suggestions on training resources and advice on your certification path and studies.

• TechNet: Designed for IT professionals, this site includes how-to instructions, best practices, downloads, technical resources, newsgroups, and chats.

• MSDN: Designed for developers, the Microsoft Developer Network (MSDN) features code samples, technical articles, downloads, newsgroups, and chats.

Skills measured
This certification exam measures your ability to build rich client applications, targeting the Windows Forms platform by using the .NET Framework 2.0. Before taking the exam, you should be proficient in the job skills listed in the following table.

Skills measured by Exam 70-548
Envisioning and Designing an Application
Evaluate the technical feasibility of an application design concept.

• Evaluate the proof of concept.

• Recommend the best technologies for the features and goals of the application.

• Weigh implementation considerations.

• Investigate existing solutions for similar business problems.

Create a proof-of-concept prototype.

• Evaluate the risks associated with ASP.NET 2.0 technology or implementation.

• Validate that the proposed technology can be used in the application.

• Demonstrate to stakeholders that the proposed solution will address their needs.

Evaluate the technical specifications for an application to ensure that the business requirements are met.

• Translate the functional specification into developer terminology, such as pseudo code and UML diagrams.

• Suggest component type and layer.

Evaluate the design of a database.

• Recommend a database schema.

• Identify the stored procedures that are required for an application.

Evaluate the logical design of an application.

• Evaluate the logical design for performance.

• Evaluate the logical design for maintainability.

• Evaluate the logical design for extensibility.

• Evaluate the logical design for scalability.

• Evaluate the logical design for security.

• Evaluate the logical design against use cases.

• Evaluate the logical design for recoverability.

• Evaluate the logical design for data integrity.

Evaluate the physical design of an application. Considerations include the design of the project structure, the number of files, the number of assemblies, and the location of these resources on the server.

• Evaluate the physical design for performance.

• Evaluate the physical design for maintainability.

• Evaluate how the physical location of files affects the extensibility of the application.

• Evaluate the physical design for scalability.

• Evaluate the physical design for availability.

• Evaluate the physical design for security.

• Evaluate the physical design for recoverability.

• Evaluate the physical design for data integrity.

Designing and Developing a User Interface
Choose an appropriate layout for the visual interface.

• Decide the content flow within the application.

• Evaluate user navigation needs.

• Identify the goal of the UI.

• Ensure the congruency and consistency of the user experience throughout the application.

• Choose techniques to control the layout.

Evaluate a strategy for implementing a common layout throughout the UI.

• Suggest an applicable UI standard based on the application specification. Considerations include MDI, SDI, control grouping, and so on.

Choose an appropriate control based on design specifications.

• Evaluate the type of data that must be captured or displayed.

• Evaluate available controls. Considerations include standard .NET Framework controls and custom, internally developed, and third-party controls.

• Evaluate the manner in which available controls are implemented in previous and ongoing projects or applications.

• Evaluate the user demographic.

• Evaluate the user environment.

Choose an appropriate data validation method at the UI layer.

• Choose a validation method based on the data type provided.

• Decide how to report the feedback. Considerations include callbacks, exceptions, and writing to an event log.

• Identify the source of invalid data.

• Identify the cause of an invalid entry.

• Evaluate whether invalid data can be prevented.

• Evaluate whether an exception must be thrown.

• Evaluate whether an exception must be logged.

• Evaluate whether an exception must be handled. This would be the case when the components you are using could throw an exception.

• Evaluate whether visual feedback, such as a message box or color, is required.

Choose appropriate user assistance and application status feedback techniques.

• Design a user assistance mechanism.

• Choose an appropriate application status feedback technique based on available control types.

• Choose an appropriate application status feedback technique to support accessibility.

• Design an application status feedback technique.

Choose an appropriate mechanism to deliver multimedia data from an application.

• Evaluate available multimedia delivery mechanisms. Considerations include bandwidth problems, file formats, frames per second, and streaming types.

• Design a multimedia delivery mechanism.

Designing and Developing a Component
Establish the required characteristics of a component.

• Decide when to create a single component or multiple components.

• Decide which tier of the application a component should be located.

• Decide which type of object to build.

Create the high-level design of a component.

• Establish the life cycle of a component.

• Decide whether to use established design patterns for the component.

• Decide whether to create a prototype for the component.

• Document the design of a component by using pseudo code, class diagrams, sequence diagrams, activity diagrams, and state diagrams.

• Evaluate tradeoff decisions. Considerations include security vs. performance, performance vs. maintainability, and so on.

Develop the public API of a component.

• Decide the types of clients that can consume a component.

• Establish the required component interfaces.

• Decide whether to require constructor input.

Develop the features of a component.

• Decide whether existing functionality can be implemented or inherited.

• Decide how to handle unmanaged and managed resources.

• Decide which extensibility features are required.

• Decide whether a component must be multithreaded.

• Decide which functions to implement in the base class, abstract class, or sealed class.

Develop an exception handling mechanism.

• Decide when it is appropriate to raise an exception.

• Decide how a component will handle exceptions. Considerations include catching and throwing a new exception; catching, wrapping, and throwing the wrapped exception; catching and terminating, and so on.

Develop the data access and data handling features of a component.

• Analyze data relationships.

• Analyze the data handling requirements of a component.

Develop a component to include profiling requirements.

• Identify potential issues, such as resource leaks and performance gaps, by profiling a component.

• Decide when to stop profiling on a component.

• Decide whether to redesign a component after analyzing the profiling results.

Designing and Developing an Application Framework
Consume a reusable software component.

• Identify a reusable software component from available components to meet the requirements.

• Identify whether the reusable software component needs to be extended.

• Identify whether the reusable software component needs to be wrapped.

• Identify whether any existing functionality needs to be hidden.

• Test the identified component that is based on the requirements.

Choose an appropriate exception handling mechanism.

• Evaluate the current exception handling mechanism.

• Design a new exception handling technique.

Choose an appropriate implementation approach for the application design logic.

• Choose an appropriate data storage mechanism.

• Choose an appropriate data flow structure.

• Choose an appropriate decision flow structure.

Choose an appropriate event logging method for the application.

• Decide whether to log data. Considerations include policies, security, requirements, and debugging.

• Choose a storage mechanism for logged events. For example, database, flat file, event log, or XML file.

• Choose a system-wide event logging method. For example, centralized logging, distributed logging, and so on.

• Decide logging levels based on severity and priority.

Monitor specific characteristics or aspects of an application.

• Decide whether to monitor data. Considerations include administration, auditing, and application support.

• Decide which characteristics to monitor. For example, application performance, memory consumption, security auditing, usability metrics, and possible bugs.

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• Choose event monitoring mechanisms, such as System Monitor and logs.

• Decide monitoring levels based on requirements.

• Choose a system-wide monitoring method from the available monitoring mechanisms.

Evaluate the application configuration architecture.

• Decide which configuration attributes to store.

• Choose the physical storage location for the configuration attributes.

• Decide in which format to store the configuration attributes.

Testing and Stabilizing an Application
Perform a code review.

Evaluate the testing strategy.

• Create the unit testing strategy.

• Evaluate the integration testing strategy.

• Evaluate the stress testing strategy.

• Evaluate the performance testing strategy.

• Evaluate the test environment specification.

Design a unit test.

• Describe the testing scenarios.

• Decide coverage requirements.

• Evaluate when to use boundary condition testing.

• Decide the type of assertion tests to conduct.

Perform integration testing.

• Determine if the component works as intended in the target environment.

• Identify component interactions and dependencies.

• Verify results.

Resolve a bug.

• Investigate a reported bug.

• Reproduce a bug.

• Evaluate the affect of the bug and the associated cost and timeline for fixing the bug.

• Fix a bug.

Deploying and Supporting an Application
Evaluate the performance of an application that is based on the performance analysis strategy.

• Identify performance spikes.

• Analyze performance trends.

• Track logon times.

Analyze the data received when monitoring an application.

• Monitor and analyze resource usage.

• Monitor and analyze security aspects.

• Track bugs that result from customer activity.

Evaluate the deployment plan.

• Identify component-level deployment dependencies.

• Identify scripting requirements for deployment. Considerations include database scripting.

• Evaluate available deployment methods.

Create an application flow-logic diagram.

• Evaluate the complexity of components.

• Evaluate the complexity of interactions with other components.

Validate the production configuration environment.

• Verify networking settings.

• Verify the deployment environment.

QUESTION 1:

You work as the Enterprise application developer at Certkiller .com. The
Certkiller .com network consists of a single Active Directory domain named
Certkiller .com. All servers in the domain run Windows Server 2003. The design of applications forms part of your responsibilities at Certkiller .com. Certkiller .com operates as a company that provides cable television, Digital Subscriber Line (DSL)
as well as telephone services.
One factor that should be kept in mind is that only one customer per household may sign up for services from Certkiller .com. However, a customer is allowed to sign up for multiple services. The exhibit below illustrates the logical database design.
Exhibit:

You need to make a decision as to whether the design offers the best performance possible.
What conclusion can you draw?

A. The design offers the best performance.
B. The design does not offer the best performance. You need to normalize the Services and Address tables.
C. The design does not offer the best performance. You need to de-normalize the
Customers and Address tables.
D. The design does not offer the best performance. You need to de-normalize the
Customers and Services tables. Answer: C
Explanation: It shows that the address can be associated with only one customer, thus
you should place the address information as close as possible to the customer information
as it will enhance the speed of data loads when both the customer and address information is required. This means that you should de-normalize the Customer and Address tables.
Incorrect answers:
A: This is incorrect since the performance can still be improved by de-normalizing the
Customers and Address tables.
B: This is incorrect since these tables are already normalized and does not result in the best performance under the circumstances.

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D: You should not de-normalize the Customers and Services tables. It is mentioned in the
question that a customer may be associated with multiple services and this option suggests an excessive duplication of data to exist in either the Customers table or the Services table. Duplicate data results in a degrading of performance in the event of searches being performed.

QUESTION 2:

You work as the developer at Certkiller .com. The Certkiller .com network consists of
a single Active Directory domain named Certkiller .com. All servers in the domain run
Windows Server 2003. The configuration and customization of Web Service applications forms part of your responsibilities at Certkiller .com. Certkiller .com operates as an information centre for the California Property Title Deeds Office. You are currently busy developing a Microsoft Windows Forms application. This application is intended to allow the California Property Title Deeds Office to perform property deed verifications and renewals for the state of California. The application will be installed at all the California Property Title Deeds Office locations all round California. The application must meet the following requirements:
1. It must negate the possibility of malicious tampering of Property Title deeds data.
2. Users of the application must be authenticated. The logical design includes the following aspects:
1. Host driver data are to be located on a central server at the California Property
Title Deeds Head Quarters.
2. Extensible Markup Language (XML) Web services will be used to access the
Property Title data.
3. A Symmetric key will be used to encrypt and decrypt Property Title Deed data at the Web service.
4. A Custom role-based security mechanism will be used to grant access to the application.
You now need to make a decision as to whether the design meets the security requirements.
What conclusion can you draw?

A. The design meets the requirements.
B. The design does not meet the requirements. You should grant access to the application using Active Directory.
C. The design does not meet the requirements. You should encrypt and decrypt data at the application and the Web service.
D. The design does not meet the requirements. You should encrypt and decrypt data at the Web service using asymmetric keys.

Answer: C

Explanation: You should encrypt and decrypt the property title deed data at both the application and the Web service. If not you would not meet the requirement or negating

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the malicious tampering of data. The data needs to be transmitted in an unencrypted form
when transmitted to and from the application (this provides a window for individuals to tamper with the data. You need to make use of Secure Sockets Layer (SSL) to provide confidentiality and data integrity. And this can be achieved by should encrypt and
decrypt the property title deed data at both the application and the Web service. Thus the design does not meet the requirements.
Incorrect answers:
A: This is incorrect since you will still require encrypting and decrypting data at both the application and the Web Service.
B: There is no need to make use of Active Directory to grant access to the application. You can make use of whatever appropriate mechanism provided the credential store is secure.
D: The problem with this option is that the data is not encrypted or signed during transmission.

QUESTION 3:

You work as the Enterprise application developer at Certkiller .com. The
Certkiller .com network consists of a single Active Directory domain named
Certkiller .com. All servers in the domain run Windows Server 2003. The design of applications forms part of your responsibilities at Certkiller .com. Certkiller .com operates as a company offering credit card validation services to online-retailers.
You are currently developing a Microsoft Windows Forms application for Certkiller .com. When completed the application must meet the following requirements:
1. It must allow all Certkiller .com employees to access credit card validation data on behalf of the online-retailers.
2. It must allow the online-retailers to build applications that access credit card validation data on behalf of users.
The following exhibit illustrates the use case diagram that models the above-mentioned requirements:
Exhibit:

The following aspects are included in the design document.
1. Create an Extensible Markup Language (XML) Web service to access the Credit
Card Validation Data.
2. Create a Windows Forms application to be used by Certkiller .com employees.

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3. Configure the Windows Forms application to access the Web service.
4. Deploy the Web service to a server at Certkiller .com.
5. Deploy the Windows Forms application to client computers at Certkiller .com. You now need to make a decision as to whether the design will meet the requirements as represented by the use case.
What conclusion can you draw?

A. The design meets the requirements.
B. The design does not meet the requirements. You need to deploy the Windows Forms application to the online-retailers.
C. The design does not meet the requirements. You need to configure the Web service to access the Windows Forms application.
D. The design does not meet the requirements. You need to allow the online-retailers to host the Web service.

Answer: A Explanation
: The use case diagram illustrates the roles and actions that can be taken. Both of the
roles, Certkiller .com employee and online-retailer, have the ability to access the Credit
Card validation data which represents the action. To allow the online-retailers the ability
to build applications that access the credit card validation data, you should deploy a Web service with which the online-retailers can interact. This is in fact mentioned in the
design.
Incorrect answers:
B: You do not need to deploy Windows Forms application to the online-retailers. Though the online-retailers need to be able to build application that accesses the credit card validation data, they should not be restricted to using Windows Forms applications.
C: The Web service should not be configured to access the Windows Forms application
as it would tightly couple the Web service to a specific type of client application and the online-retailers should not be restricted to using Windows Forms applications.
D: You should not allow the online-retailers to host the Web service because the Web service will access the Credit Card validation data which should be hosted by
Certkiller .com.

QUESTION 4:

You work as the Enterprise application developer at Certkiller .com. The
Certkiller .com network consists of a single Active Directory domain named
Certkiller .com. All servers in the domain run Windows Server 2003. The design of applications forms part of your responsibilities at Certkiller .com. Certkiller .com operates as a financial institution.
You are planning to develop a Microsoft Windows Forms application for
Certkiller .com. This application, when completed will access data in the
Certkiller .com database which is a Microsoft SQL Server 2005 database. The logical design has the following aspects:
1. Every Sunday, at 12:00 A.M. a full database backup must occur.
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