70-553CSharp Exam

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Exam : Microsoft 70-553(C#)
Title : UPGRADE:MCSD MS.NET Skills to MCPD Entpse App Dvlpr Pt1


1. You need to create a method to clear a Queue named q. Which code segment should you use?
A. foreach (object e in q) { q.Dequeue();}
B. foreach (object e in q) { Enqueue(null);}
C. q.Clear();
D. q.Dequeue();
Answer: C

2. You are developing an application that stores data about your company's sales and technical support teams. You need to ensure that the name and contact information for each person is available as a single collection when a user queries details about a specific team.
You also need to ensure that the data collection guarantees type safety. Which code segment should you use?
A. Hashtable team = new Hashtable();
　team.Add(1, "Hance");
　team.Add(2, "Jim");
　team.Add(3, "Hanif");
　team.Add(4, "Kerim");
　team.Add(5, "Alex")
　;team.Add(6, "Mark");
　team.Add(7, "Roger");
　team.Add(8, "Tommy");
B. ArrayList team = new ArrayList();
　team.Add("1, Hance");
　team.Add("2, Jim");
　team.Add("3, Hanif");
　team.Add("4, Kerim");
　team.Add("5, Alex");
　team.Add("6, Mark");
　team.Add("7, Roger");
　team.Add("8, Tommy");
C. Dictionary<int, string> team = new Dictionary<int, string>();
　team.Add(1, "Hance");
　team.Add(2, "Jim");
　team.Add(3, "Hanif");
　team.Add(4, "Kerim");
　team.Add(5, "Alex");
　team.Add(6, "Mark");
　team.Add(7, "Roger");
　team.Add(8, "Tommy");
D. string[] team = new string[] {
　"1, Hance",
　"2, Jim",
　"3, Hanif",
　"4, Kerim",
　"5, Alex",
　"6, Mark",
　"7, Roger",
　"8, Tommy"};
Answer: C

3. You are creating a class that uses unmanaged resources. This class maintains references to managed resources on other objects. You need to ensure that users of this class can explicitly release resources when the class instance ceases to be needed. Which three actions should you perform? (Each correct answer presents part of the solution. Choose three.)
A. Define the class such that it inherits from the WeakReference class.
B. Define the class such that it implements the IDisposable interface.
C. Create a class destructor that calls methods on other objects to release the managed resources.
D. Create a class destructor that releases the unmanaged resources.
E. Create a Dispose method that calls System.GC.Collect to force garbage collection.
F. Create a Dispose method that releases unmanaged resources and calls methods on other objects to release the managed resources.
Answer: BDF

4. You are creating an undo buffer that stores data modifications. You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only. Which code segment should you use?
A. Stack<string> undoBuffer = new Stack<string>();
B. Stack undoBuffer = new Stack();
C. Queue<string> undoBuffer = new Queue<string>();
D. Queue undoBuffer = new Queue();
Answer: A

5. You are developing a custom-collection class. You need to create a method in your class. You need to ensure that the method you create in your class returns a type that is 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 return a type of IComparable.
C. The method must explicitly contain a collection.
D. The method must be the only iterator in the class.
Answer: A

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