70-483 Exam
Sep 2021 updated: mcsd 70-483 ebook
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2021 Sep mcsd 70-483 ebook:
Q151. - (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
Q152. - (Topic 1)
You are implementing a method named Calculate that performs conversions between value types and reference types. The following code segment implements the method. (Line numbers are included for reference only.)
You need to ensure that the application does not throw exceptions on invalid conversions.
Which code segment should you insert at line 04?
A. int balance = (int) (float)amountRef;
B. int balance = (int)amountRef;
C. int balance = amountRef;
D. int balance = (int) (double) amountRef;
Answer: A
Q153. - (Topic 1)
You are developing an application that includes the following code segment. (Line numbers are included for reference only.)
The GetAnimals() method must meet the following requirements:
Connect to a Microsoft SQL Server database.
Create Animal objects and populate them with data from the database.
Return a sequence of populated Animal objects.
You need to meet the requirements.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Insert the following code segment at line 16: while(sqlDataReader.NextResult())
B. Insert the following code segment at line 13: sqlConnection.Open();
C. Insert the following code segment at line 13: sqlConnection.BeginTransaction();
D. Insert the following code segment at line 16: while(sqlDataReader.Read())
E. Insert the following code segment at line 16: while(sqlDataReader.GetValues())
Answer: B,D
Explanation:
SqlConnection.Open - Opens a database connection with the property settings specified by the ConnectionString. http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.open.aspx SqlDataReader.Read - Advances the SqlDataReader to the next record. http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.read.aspx
Q154. - (Topic 2)
You are creating a console application named Appl.
App1 retrieves data from the Internet by using JavaScript Object Notation (JSON).
You are developing the following code segment (line numbers are included for reference only):
You need to ensure that the code validates the JSON string. Which code should you insert at line 03?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Explanation: The JavaScriptSerializer Class Provides serialization and deserialization functionality for AJAX-enabled applications.
The JavaScriptSerializer class is used internally by the asynchronous communication layer to serialize and deserialize the data that is passed between the browser and the Web server. You cannot access that instance of the serializer. However, this class exposes a public API. Therefore, you can use the class when you want to work with JavaScript Object Notation (JSON) in managed code.
Q155. - (Topic 2)
You need to create a method that can be called by using a varying number of parameters.
What should you use?
A. Method overloading
B. Interface
C. Named parameters
D. Lambda expressions
Answer: A
Explanation:
Member overloading means creating two or more members on the same type that differ only in the number or type of parameters but have the same name. Overloading is one of the most important techniques for improving usability, productivity, and readability of reusable libraries. Overloading on the number of parameters makes it possible to provide simpler versions of constructors and methods. Overloading on the parameter type makes it possible to use the same member name for members performing identical operations on a selected set of different types.
Updated mcsd 70-483 questions:
Q156. - (Topic 2)
You are developing an application that will read data from a text file and display the file contents.
You need to read data from the file, display it, and correctly release the file resources.
Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q157. - (Topic 2)
You are developing an application.
The application contains the following code:
When you compile the code, you receive the following syntax error message: "A previous catch clause already catches all exceptions of this or a super type ('System.Exception')."
You need to ensure that the code can be compiled. What should you do?
A. Catch the ArgumentException exception instead of the ArgumentNullException exception.
B. Throw a new exception in the second catch block.
C. Catch the ArgumentNullException exception first.
D. Re-throw the exception caught by the second catch block.
Answer: A
Q158. - (Topic 1)
You are debugging an application that calculates loan interest. The application includes the following code. (Line numbers are included for reference only.)
You have the following requirements:
. The debugger must break execution within the Calculatelnterest() method when the loanAmount variable is less than or equal to zero. . The release version of the code must not be impacted by any changes.
You need to meet the requirements.
What should you do?
A. Insert the following code segment at tine 05: Debug.Write(loanAmount > 0);
B. Insert the following code segment at line 05: Trace.Write(loanAmount > 0);
C. Insert the following code segment at line 03: Debug.Assert(loanAmount > 0);
D. Insert the following code segment at line 03: Trace.Assert(loanAmount > 0);
Answer: C
Explanation:
By default, the Debug.Assert method works only in debug builds. Use the Trace.Assert method if you want to do assertions in release builds. For more information, see Assertions in Managed Code. http://msdn.microsoft.com/en-us/library/kssw4w7z.aspx
Q159. HOTSPOT - (Topic 2)
You have an existing order processing system that accepts .xml files,
The following code shows an example of a properly formatted order in XML:
You create the following class that will be serialized:
For each of the following properties, select Yes if the property is serialized according to the defined schema. Otherwise, select No.
Answer:
Q160. - (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: A
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 D: 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.