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2021 Mar 70-483 exam engine
Q71. - (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
Q72. - (Topic 2)
You are developing an application.
The application contains the following code segment (line numbers are included for reference only):
When you run the code, you receive the following error message: "Cannot implicitly convert type 'object'' to 'int'. An explicit conversion exists (are you missing a cast?)."
You need to ensure that the code can be compiled.
Which code should you use to replace line 05?
A. var2 = arrayl[0] is int;
B. var2 = ((List<int>)arrayl) [0];
C. var2 = arrayl[0].Equals(typeof(int));
D. var2 = (int) arrayl [0];
Answer: D
Q73. - (Topic 2)
You need to store the values in a collection.
The solution must meet the following requirements:
. The values must be stored in the order that they were added to the collection. . The values must be accessed in a first-in, first-out order.
Which type of collection should you use?
A. SortedList
B. Queue
C. ArrayList
D. Hashtable
Answer: B
Q74. - (Topic 1)
You are developing an application that uses structured exception handling. The application includes a class named Logger. The Logger class implements a method named Log by using the following code segment:
public static void Log(Exception ex) { }
You have the following requirements:
. Log all exceptions by using the Log() method of the Logger class.
. Rethrow the original exception, including the entire exception stack.
You need to meet the requirements. Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Q75. - (Topic 1)
You are developing a C# application that includes a class named Product. The following code segment defines the Product class:
You implement System.ComponentModel.DataAnnotations.IValidateableObject interface to provide a way to validate the Product object.
The Product object has the following requirements:
. The Id property must have a value greater than zero.
. The Name property must have a value other than empty or null. You need to validate the Product object. Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Improved 70-483 exam prep:
Q76. - (Topic 1)
You are creating a console application by using C#.
You need to access the assembly found in the file named car.dll.
Which code segment should you use?
A. Assembly.Load();
B. Assembly.GetExecutingAssembly();
C. This.GetType();
D. Assembly.LoadFile("car.dll");
Answer: D
Explanation:
Assembly.LoadFile - Loads the contents of an assembly file on the specified path. http://msdn.microsoft.com/en-us/library/b61s44e8.aspx
Q77. - (Topic 2)
You are developing a class named Scorecard. The following code implements the Scorecard class. (Line numbers are included for reference only.)
You create the following unit test method to test the Scorecard class implementation:
You need to ensure that the unit test will pass. What should you do?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q78. - (Topic 2)
You write the following method (line numbers are included for reference only):
You need to ensure that the method extracts a list of URLs that match the following pattern: @http://(www.)?([^.]+).com;
Which code should you insert at line 07?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Explanation: * MatchCollection Represents the set of successful matches found by iteratively applying a regular expression pattern to the input string. The collection is immutable (read-only) and has no public constructor. The Regex.Matches method returns a MatchCollection object.
* List<T>.Add Method Adds an object to the end of the List<T>. Incorrect: Not A: ICollection.SyncRoot Property For collections whose underlying store is not publicly available, the expected implementation is to return the current instance. Note that the pointer to the current instance might not be sufficient for collections that wrap other collections; those should return the underlying collection's SyncRoot property.
Q79. - (Topic 2)
You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must meet the following requirements:
Be read-only.
Be able to use the data before the entire data set is retrieved.
Minimize the amount of system overhead and the amount of memory usage.
Which type of object should you use in the method?
A. DbDataReader
B. DataContext
C. unTyped DataSet
D. DbDataAdapter
Answer: C
Explanation: DbDataReader Class
Reads a forward-only stream of rows from a data source.
Q80. HOTSPOT - (Topic 2)
You are developing the following classes named:
Class1
Class2
Class3
All of the classes will be part of a single assembly named Assembly.dll. Assembly.dll will be used by multiple applications.
All of the classes will implement the following interface, which is also part ofAssembly.dll:
public interface Interface1 { void Method1(decimal amount); void Method2(decimal amount); }
You need to ensure that the Method2 method for the Class3 class can be executed only when instances of the class are accessed through the Interface1 interface. The solution must ensure that calls to the Method1 method can be made either through the interface or through an instance of the class.
Which signature should you use for each method? (To answer, select the appropriate signature for each method in the answer area.)
Answer:
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