Testking tk Microsoft MCTS Exam 70-646
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Pro:Windows Server 2008, Server Administrator : 70-646 ExamMicrosoft: 70-646 Exam
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Testking Materials do not contain actual questions and answersPro:Windows Server 2008, Server Administrator : 70-646 Exam
A server administrator is responsible for the operations and day-to-day management of an infrastructure of servers for an enterprise organization. Windows server administrators manage the infrastructure, Web, and IT application servers. The Windows server administrators use scripts and batch files written by others or those that they occasionally write themselves to accomplish tasks on a regular basis. They conduct most server management tasks remotely by using Terminal Server or administration tools installed on their local workstation. A server administrator’s primary tasks include:
• Managing the server operating system, file, and directory services
• Software distribution and updates
• Profiling and monitoring assigned servers
• Troubleshooting
Server administrators also support engineering projects. Server administrators are responsible for server builds and configuration. Their job role involves 60 percent operations, 20 percent engineering, and 20 percent support tasks.
QUESTION 1:
You create a Web custom control named CKToggle that users can turn on and off. The CKToggle control
includes a Button control named toggleButton. You write an event handler named toggleButton_Click for
the toggleButton.Click event. This event adjusts the BorderStyle property to signify whether the Button is
toggled on or off.
You want to add code to the CKToggle class so that when toggleButton is clicked, pages that contain
instances of CKToggle can process custom event handling code. You add the following code to the
CKToggle class:
public event EventHandler ChangedValue;
protected void OnChangedValue(EventArgs e)
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{
ChangedValue(this, e);
}
You need to add code to the toggleButton_Click so that pages that contain instances of CKToggle can
handle the ChangedValue event and process custom event handling code.
Which lines of code are two possible ways to achieve this goal? (Each correct answer presents a complete
solution. Choose two)
A. ChangedValue(this, EventArgs.Empty);
B. s.Click += new System.EventHandler(this.OnChangedValue);
C. OnChangedValue(EventArgs.Empty);
D. OnChangedValue(this, EventArgs.Empty);
Answer: B, C
Explanation:
B: To wire your event handler to the instance, you must create an instance of EventHandler that takes a
reference to OnChangedValue in its argument and add this delegate instance to the Click event.
C: We can invoke the OnChangedValue event. We must use only the EventArgs parameter.
Note: To consume an event in an application, you must provide an event handler (an event-handling method)
that executes program logic in response to the event and register the event handler with the event source. This
process is referred to as event wiring.
Reference:
C# Programmer’s Reference, Events Tutorial
.NET Framework Developer’s Guide, Consuming Events [C#]
Incorrect Answers
A: We must use the OnChangedValue event.
D: We should specify only the EventArgs parameter.
QUESTION 2:
You company Certkiller Inc. hosts an ASP.NET application that provides customer demographic
information. Some of the demographics data is presented by using images.
The target audience for the application includes a significant number of users who have low vision. These
individuals use various browsers that vocalize the textual content of Web pages. These users need to
receive the content of the images in vocalized form.
You need to modify the application to make it accessible for your target audience. You need to
accomplish this task with the minimum amount of development effort.
How should you modify the application?
A. Modify all ASP.NET pages in the application so that the view state is enabled.
B. Modify all ASP.NET pages in the application to add custom logic that conveys the demographic
information in either textual or graphical format.
C. Modify all images in the application so that the ToolTip property conveys the same demographic
information as the image.
D. Modify all images in the application so that the AlternateText property conveys the same demographic
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information as the image.
Answer: D
Explanation: The AlternateText property is used by accessibility utilities such as the Windows XP narrator in
order to present graphics as speech.
QUESTION 3:
Your ASP.NET application uses the Microsoft .NET Framework security classes to implement role-based
security. You need to authorize a user based on membership in two different roles.
You create a function named ValidateCKRole that has three arguments. The argument named User is the
user name, the argument named Role1 is the first role to verify, and the argument named Role2 is the
second role to verify. You want ValidateCKRole to return a value of true if the specified user has
membership in either of the specified roles.
You write the following code:
PrincipalPermission principalPerm1 =
new PrincipalPermission(“User”, “Role1″);
PrincipalPermission principalPerm2 =
new PrincipalPermission(“User”, “Role”);
Which code segment should you use to complete the function?
A. return principalPerm1.IsUnrestricted() &&
principalPerm2.IsUnrestricted();
B. return principalPerm1.IsSubsetOf(principalPerm2);
C. return principalPerm1.Intersect(principalPerm2).Demand();
D. return principalPerm1.Union(principalPerm2).Demand();
Answer: D
Explanation: The SecurityPermission.Union method creates a permission that is the union of the current
permission and the specified permission. This ensures that ValidateRole returns a value of true if either
permissions is true.
Reference: .NET Framework Class Library, SecurityPermission.Union Method [C#]
Incorrect Answers
A: The SecurityPermission.IsUnrestricted method returns a value indicating whether the current permission
is unrestricted.
B: The SecurityPermission.IsSubsetOf method determines whether the current permission is a subset of the
specified permission.
C: Intersect would require that both conditions were true in order to return true.
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