You are an enterprise application developer. You create a large-scale, managed application that needs a consistent approach to event logging. The application must format and log events to 20 destinations. Events from 15 sources must be collated onto a single computer. The application must perform the following tasks:

* Maintain consistent logging and instrumentation practices, both within an application and across the enterprise.
* Ease the learning curve for developers by using a consistent architectural model.
* Support custom implementations of formatters and event sinks.
* Generate log entries as discrete events or as part of a traced process.

You need to select an appropriate implementation approach. Which approach should you choose?

You are an enterprise application developer. You design and develop an event logging strategy for a distributed system. The distributed system consists of a Web-based application, a Microsoft Windows service, and several Microsoft Windows-based applications. The event logging strategy must meet the following requirements:

* All system errors are logged and available to a central administration application.
* The data is available for historical analysis.
* The delivery mechanism is fault-tolerant and reliable.

You need to recommend a system-wide event logging strategy. What should you recommend?

You are an enterprise application developer. You are designing an application that manages names and descriptions for your companys products.
To manipulate these items, the application requires the object that holds the strings to meet the following criteria:

* Be dynamically resizable.
* Be able to store duplicate entries.
* Expose methods to find all instances of the same text.

You need to recommend an appropriate container for the strings. What should you recommend?

You are an enterprise application developer. You are creating an application to manage the inventories of 1,000 stores in geographically dispersed locations. The stores are connected to the main office through a secure network infrastructure. Inventory data from the store servers must be consolidated at the main office everyday. The main office initiates the consolidation by calling a component at the store. Transactional integrity must be maintained during consolidation. Security policy requires the application to propagate Microsoft Windows security context throughout the system to ensure authorization and authentication. Security policy does not permit Web servers at the stores. You need to recommend a reusable component technology that permits data from the store servers to be consolidated at the main office. You also need to ensure that the security policy requirements are met.
What should you recommend?

You are an enterprise application developer for Woodgrove Bank. You are creating an application to manage different loan types. All loan types share a common implementation for interacting with the financial systems of Woodgrove. Each loan type must implement its own rules for calculating interest. In the first version of the application, you must support car loans and house loans. You need to develop an architecture for the different loan types within your application. What should you do?

You are an enterprise application developer. You create a component that executes queries against Microsoft SQL Server. The queries are executed inside the scope of a transaction. The transaction is started by using the SqlTransaction object. The code executes the query inside a Try block. You need to create an exception handling mechanism that rolls back the transaction under any error condition and notifies the caller of the error. What should you do?

You are an enterprise application developer. You are creating an application that will deploy an on-demand training program. The training is a combination of documents and video files that the user can ac cess from an internal server on the LAN. Users might access this application through their home computers when they are connected to the corporate network through a virtual private network (VPN). You need to design the video portion for the on-demand training program. You also need to ensure that users can view the videos without making modifications to their computer configuration. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

You are an enterprise application developer. You are creating a component that will be deployed as part of a class library. The component must meet the following specifications:

* The interface of the component must be accessible to components outside the hosting assembly.
* The interface of the component must be interoperable with components written in any other .NET Framework languages.
* The implementation of the component cannot be expanded upon by a derived class.

You need to design the interface of the component.
Which three tasks should you perform? (Each correct answer presents part of the solution. Choose three.)

You are an enterprise application developer. You are creating a component that will be used in an order fulfillment process.
The component performs the following two tasks:

* Modifies data in a local Microsoft SQL Server database
* Adds data to a remote SQL Server database

The application that uses the component is multithreaded. Each application thread that uses the component creates its own instances of the component classes. You need to ensure that the component either performs both tasks successfully or performs neither task. What should you do?

You are an enterprise application developer. You create a component that generates medical documents. Your component is used by multiple document management systems. Users generate documents throughout the entire day and most documents are generated during business hours. You notice that user load is increasing and performance is degrading. You need to identify sections of code on which to focus performance tuning efforts. Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)