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70-483 Exam Questions - Online Test


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Q1. - (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 Counter2 is available for use in Windows Performance Monitor (PerfMon). 

Which code segment should you insert at line 16? 

A. CounterType = PerformanceCounterType.RawBase 

B. CounterType = PerformanceCounterType.AverageBase 

C. CounterType = PerformanceCounterType.SampleBase 

D. CounterType = PerformanceCounterType.CounterMultiBase 

Answer:

Explanation: 

PerformanceCounterType.AverageTimer32 - An average counter that measures the time it takes, on average, to complete a process or operation. Counters of this type display a ratio of the total elapsed time of the sample interval to the number of processes or operations completed during that time. This counter type measures time in ticks of the system clock. Formula: ((N 1 -N 0)/F)/(B 1 -B 0), where N 1 and N 0 are performance counter readings, B 1 and B 0 are their corresponding AverageBase values, and F is the number of ticks per second. The value of F is factored into the equation so that the result can be displayed in seconds. 

Thus, the numerator represents the numbers of ticks counted during the last sample interval, F represents the frequency of the ticks, and the denominator represents the number of operations completed during the last sample interval. Counters of this type include PhysicalDisk\ Avg. Disk sec/Transfer. 

PerformanceCounterType.AverageBase - A base counter that is used in the calculation of time or count averages, such as AverageTimer32 and AverageCount64. Stores the denominator for calculating a counter to present "time per operation" or "count per operation".. http://msdn.microsoft.com/en-us/library/system.diagnostics.performancecountertype.aspx 

Q2. - (Topic 2) 

You are developing an application that contains a class named TheaterCustomer and a method named ProcessTheaterCustomer. The ProcessTheaterCustomer() method accepts a TheaterCustomer object as the input parameter. 

You have the following requirements: 

. Store the TheaterCustomer objects in a collection. . Ensure that the ProcessTheaterCustomer() method processes the TheaterCustomer objects in the order in which they are placed into the collection. 

You need to meet the requirements. 

What should you do? 

A. Create a System.Collections.Stack collection. Use the Push() method to add TheaterCustomer objects to the collection, Use the Peek() method to pass the objects to the ProcessTheaterCustomer() method. 

B. Create a System.Collections.Queue collection. Use the Enqueue() method to add TheaterCustomer objects to the collection. Use the Dequeue() method to pass the objects to the ProcessTheaterCustomer() method. 

C. Create a System.Collections.SortedList collection. Use the Add() method to add TheaterCustomer objects to the collection. Use the Remove() method to pass the objects to the ProcessTheaterCustomer() method. 

D. Create a System.Collections.ArrayList collection. Use the Insert() method to add TheaterCustomer objects to the collection. Use the Remove() method to pass the objects to the ProcessTheaterCustomer() method. 

Answer:

Q3. - (Topic 2) 

You are creating a console application named App1. 

App1 will validate user input for order entries. 

You are developing the following code segment (line numbers are included for reference only): 

You need to complete the code segment. 

The solution must ensure that prices are positive and have two decimal places. 

Which code should you insert at line 03? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: * Regex.IsMatch Method (String, String) 

Indicates whether the specified regular expression finds a match in the specified input string. 

Syntax: 

public static bool IsMatch( 

string input, 

string pattern 

Q4. - (Topic 1) 

You are creating a class named Employee. The class exposes a string property named EmployeeType. The following code segment defines the Employee class. (Line numbers are included for reference only.) 

The EmployeeType property value must be accessed and modified only by code within the Employee class or within a class derived from the Employee class. 

You need to ensure that the implementation of the EmployeeType property meets the requirements. 

Which two actions should you perform? (Each correct answer represents part of the complete solution. Choose two.) 

A. Replace line 05 with the following code segment: protected get; 

B. Replace line 06 with the following code segment: private set; 

C. Replace line 03 with the following code segment: public string EmployeeType 

D. Replace line 05 with the following code segment: private get; 

E. Replace line 03 with the following code segment: protected string EmployeeType 

F. Replace line 06 with the following code segment: protected set; 

Answer: B,E 

Q5. - (Topic 2) 

You are creating an application that processes a list of numbers. 

The application must define a method that queries the list and displays a subset of the 

numbers to the user. The method must not update the list. 

You need to create an extendable query by using LINQ. 

What should you do? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Q6. DRAG DROP - (Topic 2) 

You are creating a class named Data that includes a dictionary object named _data. 

You need to allow the garbage collection process to collect the references of the _data object. 

You have the following code: 

Which code segments should you include in Target 1 and Target 2 to complete the code? (To answer, drag the appropriate code segments to the correct locations 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:  

Q7. - (Topic 1) 

You are developing an application that includes the following code segment. (Line numbers are included for reference only.) 

You need to ensure that the application accepts only integer input and prompts the user each time non-integer input is entered. 

Which code segment should you add at line 19? 

A. If (!int.TryParse(sLine, out number)) 

B. If ((number = Int32.Parse(sLine)) == Single.NaN) 

C. If ((number = int.Parse(sLine)) > Int32.MaxValue) 

D. If (Int32.TryParse(sLine, out number)) 

Answer:

Explanation: 

B and C will throw exception when user enters non-integer value. D is exactly the opposite what we want to achieve. 

Int32.TryParse - Converts the string representation of a number to its 32-bit signed integer equivalent. A return value indicates whether the conversion succeeded. http://msdn.microsoft.com/en-us/library/f02979c7.aspx 

Q8. DRAG DROP - (Topic 2) 

You are developing an application that will write string values to a file. The application includes the following code segment. (Line numbers are included for reference only.) 

01 protected void ProcessFile(string fileName, string value) 02 { 

04 } 

You need to ensure that the ProcessFile() method will write string values to a file. 

Which four code segments should you insert in sequence at line 03? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.) 

Answer:  

Q9. - (Topic 1) 

An application receives JSON data in the following format: 

The application includes the following code segment. (Line numbers are included for reference only.) 

You need to ensure that the ConvertToName() method returns the JSON input string as a Name object. 

Which code segment should you insert at line 10? 

A. Return ser.ConvertToType<Name>(json); 

B. Return ser.DeserializeObject(json); 

C. Return ser.Deserialize<Name>(json); 

D. Return (Name)ser.Serialize(json); 

Answer:

Explanation: 

JavaScriptSerializer.Deserialize<T> - Converts the specified JSON string to an object of type T. http://msdn.microsoft.com/en-us/library/bb355316.aspx 

Q10. 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: