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Microsoft UPGRADE: MCAD Skills to MCTS Web Apps Using MS.NET Framework Sample Questions:

1. You work as the developer in an IT company. Recently your company has a big customer. The customer runs a large supermarket chain. You're appointed to provide technical support for the customer. Now you are creating a class library according to the customer requirement. The class library contains the class hierarchy defined in the following code segment. (Line numbers are included for reference only.)
1 public class Group {
2 public Employee[] Employees;
3 }
4 public class Employee {
5 public string Name;
6 }
7 public class Manager : Employee {
8 public int Level;
9 }
You create an instance of the Group class then populate the fields of the instance. You receive InvalidOperationException when you use the Serialize method of the XmlSerializer class to serialize the instance. Besides this, you receive the following error message: "There was an error generating the XML document."
In order to successfully use the XmlSerializer class to serialize instances of the Group class, you have to modify the code segment. And you must make sure that the XML output contains an element for all public fields in the class hierarchy.
What should you do?

A) Insert the following code between lines 1 and 2 of the code segment: [XmlArrayItem(Type = typeof(Employee))] [XmlArrayItem(Type = typeof(Manager))]
B) Insert the following code between lines 3 and 4 of the code segment: [XmlElement(Type = typeof(Employee))] andInsert the following code between lines 6 and 7 of the code segment: [XmlElement(Type = typeof(Manager))]
C) Insert the following code between lines 1 and 2 of the code segment: [XmlElement(Type = typeof(Employees))]
D) Insert the following code between lines 1 and 2 of the code segment: [XmlArray(ElementName="Employees")]

2. You work as the developer in an IT company. Recently your company has a big customer. The customer runs a large supermarket chain. You're appointed to provide technical support for the customer. Now according to the customer requirement, you are creating an auditing application to display the trusted ClickOnce applications. The applications are installed on a computer. Now you need the auditing application to display the origin of each trusted application. In the options below, which code segment should you use?

A) ApplicationTrustCollection trusts;trusts = ApplicationSecurityManager.UserApplicationTrusts; foreach (object trust in trusts) { Console.WriteLine(trust.ToString());}
B) ApplicationTrustCollection trusts;trusts = ApplicationSecurityManager.UserApplicationTrusts; foreach (ApplicationTrust trust in trusts) { Console.WriteLine(trust.ExtraInfo.ToString());}
C) ApplicationTrustCollection trusts;trusts = ApplicationSecurityManager.UserApplicationTrusts; foreach (ApplicationTrust trust in trusts) { Console.WriteLine(trust.ApplicationIdentity.FullName);}
D) ApplicationTrustCollection trusts;trusts = ApplicationSecurityManager.UserApplicationTrusts; foreach (ApplicationTrust trust in trusts) { Console.WriteLine(trust.ToString());}

3. You have just graduated from college, now you are serving the internship as the software developer in an international company. A large, n-tier Web application that has a custom event tracking system has been created by you. You have to create a custom event type. The custom event type enables your event tracking system to record all relevant event details for all types of events. The events must be stored in Microsoft SQL Server. From which base type should your custom event type inherit?

A) Your custom event type should inherit from WebEventProvider
B) Your custom event type should inherit from WebBaseEvent
C) Your custom event type should inherit from IWebEventCustomEvaluator
D) Your custom event type should inherit from WebAuditEvent

4. You work as the developer in an IT company. Recently your company has a big customer. The customer runs a large supermarket chain. You're appointed to provide technical support for the customer. The customer needs to compress an array of bytes. So you are writing a method to compress bytes. The bytes are passed to the method in a parameter named document. The contents of the incoming parameter have to be compressed. Which code segment should you use?

A) MemoryStream inStream = new MemoryStream(document);GZipStream zipStream = new GZipStream(inStream, CompressionMode.Compress); byte[] result = new byte[document.Length];zipStream.Write(result, 0, result.Length); return result;
B) MemoryStream outStream = new MemoryStream();GZipStream zipStream = new GZipStream(outStream, CompressionMode.Compress);zipStream.Write(document, 0, document.Length);zipStream.Close();return outStream.ToArray();
C) MemoryStream inStream = new MemoryStream(document);GZipStream zipStream = new GZipStream(inStream, CompressionMode.Compress); MemoryStream outStream = new MemoryStream();int b;while ((b = zipStream.ReadByte()) != -1) { outStream.WriteByte((byte)b);} return outStream.ToArray();
D) MemoryStream stream = new MemoryStream(document);GZipStream zipStream = new GZipStream(stream, CompressionMode.Compress);zipStream.Write(document, 0, document.Length);zipStream.Close();return stream.ToArray();

5. You work as the developer in an IT company. Recently your company has a client. The client needs a class. Your company asks you to develop a custom-collection class. In this class, a method has to be created. After the method has been created, the method has to return a type. And the type should be compatible with the Foreach statement.
Which criterion should the method meet?

A) The method must return a type of either IEnumerator or IEnumerable.
B) The method must be the only iterator in the class.
C) The method must explicitly contain a collection.
D) The method must return a type of IComparable.

Solutions: