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MCAD .NET XML Web Services and Server Components with C#.NET : 70-320 Exam

Exam Number/Code: 70-320
Exam Name: MCAD .NET XML Web Services and Server Components with C#.NET

“MCAD .NET XML Web Services and Server Components with C#.NET”, also known as 70-320 exam, is a Microsoft certification. Withthe complete collection of questions and answers,Pass4sure has assembled to take you through 86 questions to your 70-320
Exam preparation. In the 70-320 exam resources, you will cover every field and category in MCAD.NET helping to ready you for your successful Microsoft Certification.

QUESTION 1:

You develop an application named ckApp. This application needs to run on the same computer as a
Windows service named ckService.
You want to ensure that ckService starts from ckApp if ckService is not already running. Which code segment should you use?

A. ServiceController ckServiceController = new
ServiceController(“ckService”);
if (ckServiceController.Status == ServiceControllerStatus.Stopped)
{ ckServiceController.Start(); }
B. ServiceController ckServiceController = new ServiceController(“ckService”); ckServiceController.Start(); C. String[] ckArgs = new string [1];
ckArgs[0] = “ckService”;
ServiceController ckServiceController = new ServiceController();
if (ckServiceController.Status == ServiceControllerStatus.Stopped)
{ ckServiceController.Start(ckArgs); } D. String[] ckArgs = new string[1]; ckArgs[0] = “ckService”;
ServiceController ckServiceController = new ServiceController();
myServiceController.Start(ckArgs); Answer: A
QUESTION 2:

Your Microsoft SQL Server database contains a table named CertK Orders. CertK Orders is used to store new purchase orders as they are entered into an order-entry application. To keep up with customer demand, the order fulfillment department wants to know at 15-minute intervals when new orders are entered.
You need to develop an application that reads CertK Orders every 15 minutes and sends all new orders to the order fulfillment department. The application will run on computer that is used by
several users who continuously log on and log off from the network to perform miscellaneous tasks. Which type of .NET application should you use?

A. Windows Form
B. Windows service
C. XML Web service
D. .NET Remoting object

Answer: B

Explanation: A Windows service would still be running even though users logs on and off. Incorrect Answers

A: A Windows Form would be closed when a user logs off.
C: An XML Web service is not guaranteed to keep running if a user logs off.
D: You can use .NET Remoting to enable different applications to communicate with one another. However, a remoting object would be destroyed when a user logs off the system.

QUESTION 3:

You create a serviced component named CertK Item that implements an interface named I CertK Item. You want to ensure that calls to the serviced component through I CertK Item are queued.
What should you do?

A. To CertK Item, add the following attribute:
[InterfaceQueuing(true, Interface="I CertK Item")] B. To CertK Item, add the following attribute:
[Transaction(TransactionOption.Disabled, Isolation=TransactionIsolationLevel.Serializable)]
C. To the CertK Item assembly, add the following attribute:
[assembly: ApplicationQueuing(Enabled=true, QueueListenerEnabled=true)]
D. In the CertK Item implementation, override the Activate method from the ServicedComponent class.
In the Activate method, add the following code segment: Queue q = new Queue(); q.Enqueue(this);

Answer: C

Explanation: In addition to enabling queued component support at the application level, you must mark your interfaces as capable of receiving queued calls. You do that by using setting the QueueListenerEnabled attribute to True.
Note: The COM+ Queued Components (QC) service provides an easy way to invoke and execute
components asynchronously. Processing can occur without regard to the availability or accessibility of either the sender or receiver.
Reference: .NET Framework Developer’s Guide, Queued Components [C#] Incorrect Answers
A: The signature for the InterfaceQueuing attribute as shown in Answer A is wrong. B: Transactions are not helpful for interface queuing configuration.
D: Creating a new queue in the Active method is not correct in this scenario.

QUESTION 4:

You are creating a serviced component named ItemCKInventory. An online catalog application will use ItemCKInventory to display the availability of products in inventory.
Additional serviced components written by other developers will continuously update the inventory data as orders are placed.
The ItemCKInventory class includes the following code segment:
_

Public Class ItemCKInventory
Inherits ServicedComponent
‘ Method code goes here. End Class
ItemInventory is configured to require transactions. You want ItemInventory to respond to requests
as quickly as possible, even if that means displaying inventory values that are not up to date with the most recent orders.
What should you do?

A. To the ItemCKInventory class, add the following attribute:

B. To all methods of the ItemCKInventory class, add the following attribute:

C. Modify the Transaction attribute of the ItemCKInventory class to be the following attribute:

D. Modify the Transaction attribute of the ItemCKInventory class to be the following attribute:

Answer: D

Explanation: The ReadUncommitted transaction isolation level makes a dirty read is possible, meaning that
no shared locks are issued and no exclusive locks are honored. This will reduce the number of locks,
compared to the default transaction isolation level of readcommitted. Reduced number of locks will increase the performance.
Incorrect Answers
A: Object pooling is a COM+ service that enables you to reduce the overhead of creating each object from scratch. However, object pooling is not much use in transactions.
B: Autocomplete does not apply here.
C: Timeout configuration would not address performance issue.
Reference: .NET Framework Class Library, IsolationLevel Enumeration

QUESTION 5:

You are creating a serviced component named UserManager. UserManager adds user accounts to multiple transactional data sources.
The UserManager class includes the following code segment:
[Transaction(TransactionOption.Required)]
[SecurityRole("Admin")]
public class UserManager : ServicedComponent {
public void AddUser(string CertK name, string CertK password) {
// Code to add the user to data sources goes here.
}
}
You must ensure that the AddUser method reliably saves the new user to either all data sources or no

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Questions and Answers : 86 questions
Expected Date: October 24th , 2008
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