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Q21. DRAG DROP - (Topic 2)
You are developing a class named Temperature.
You need to ensure that collections of Temperature objects are sortable.
You have the following code:
Which code segments should you include in Target 1, Target 2 and Target 3 to complete the code? (To answer, drag the appropriate code segments to the correct targets in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)
Answer:
Q22. - (Topic 1)
You are creating an application that manages information about your company's products. The application includes a class named Product and a method named Save.
The Save() method must be strongly typed. It must allow only types inherited from the Product class that use a constructor that accepts no parameters.
You need to implement the Save() method. Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q23. - (Topic 1)
You have the following code (line numbers are included for reference only):
You need to identify the missing line of code at line 15. Which line of code should you identify?
A. using (fooSqlConn.BeginTransaction())
B. while (fooSqlReader.Read())
C. while (fooSqlReader.NextResult())
D. while (fooSqlReader.GetBoolean(0))
Answer: B
Q24. - (Topic 1)
You are developing a method named CreateCounters that will create performance counters for an application.
The method includes the following code. (Line numbers are included for reference only.)
You need to ensure that Counter1 is available for use in Windows Performance Monitor (PerfMon).
Which code segment should you insert at line 16?
A. CounterType = PerformanccCounterType.RawBase
B. CounterType = PerformanceCounterType.AverageBase
C. CounterType = PerformanceCounterType.SampleBase
D. CounterType = PerformanceCounterType.CounterMultiBase
Answer: C
Explanation:
PerformanceCounterType.SampleBase - A base counter that stores the number of sampling interrupts taken and is used as a denominator in the sampling fraction. The sampling fraction is the number of samples that were 1 (or true) for a sample interrupt. Check that this value is greater than zero before using it as the denominator in a calculation of SampleFraction.
PerformanceCounterType.SampleFraction - A percentage counter that shows the average ratio of hits to all operations during the last two sample intervals. Formula: ((N 1 - N 0) / (D 1 - D 0)) x 100, where the numerator represents the number of successful operations during the last sample interval, and the denominator represents the change in the number of all operations (of the type measured) completed during the sample interval, using counters of type SampleBase. Counters of this type include Cache\Pin Read Hits %. http://msdn.microsoft.com/en-us/library/system.diagnostics.performancecountertype.aspx
Q25. - (Topic 2)
You have the following class (line numbers are included for reference only):
ServiceProxy is a proxy for a web service. Calls to the Update method can take up to five seconds. The Test class is the only class the uses Class1.
You run the Execute method three times, and you receive the following results: 312 231
You need to ensure that each value is appended to the Value property in the order that the Modify methods are invoked.
What should you do?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Q26. HOTSPOT - (Topic 2)
You define a class by using the following code: You write the following code for a method (line numbers are included for reference only):
To answer, complete each statement according to the information presented in the code.
Answer:
Q27. - (Topic 2)
You are developing code for an application that retrieves information about Microsoft .NET Framework assemblies.
The following code segment is part of the application (line numbers are included for reference only):
You need to insert code at line 04. The code must load the assembly. Once the assembly is loaded, the code must be able to read the assembly metadata, but the code must be denied access from executing code from the assembly.
Which code segment should you insert at line 04?
A. Assembly.ReflectionOnlyLoadFrom(bytes);
B. Assembly.ReflectionOniyLoad(bytes);
C. Assembly.Load(bytes);
D. Assembly.LoadFrom(bytes);
Answer: C
Q28. - (Topic 1)
You are modifying an application that processes leases. The following code defines the Lease class. (Line numbers are included for reference only.)
Leases are restricted to a maximum term of 5 years. The application must send a notification message if a lease request exceeds 5 years.
You need to implement the notification mechanism.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
Answer: A,B
Q29. - (Topic 2)
You need to write a method that combines an unknown number of strings. The solution must minimize the amount of memory used by the method when the method executes.
What should you include in the code?
A. The String.Concat method
B. The StringBuilder.Append method
C. The + operator
D. The += operator
Answer: A
Explanation: A: String.Concat Method Concatenates one or more instances of String, or the String representations of the values of one or more instances of Object.
Q30. - (Topic 2)
You are writing the following method (line numbers are included for reference only):
You need to ensure that CreateObject compiles successfully.
What should you do?
A. Insert the following code at line 02: where T : new()
B. Replace line 01 with the following code: public void CreateObject<T>()
C. Replace line 01 with the following code: public Object CreateObject<T>()
D. Insert the following code at line 02: where T : Object
Answer: A