C# LinkedIn Skill Assessment Answer

Here, We see C# LinkedIn Skill Assessment Answer. This assessment test consists of 15-20 MCQs to demonstrate your knowledge of your selected skills. MCQs come from different topics – C# Assemblies and Extensions, C# Communication, C# Fundamentals, C# Networking, C# Objects, and Types..

List of all LinkedIn Skills Assessment Answer

C# LinkedIn Skill Assessment Answer

C# LinkedIn Skill Assessment Answer

Q1. In which of these situations are interfaces better than abstract classes?

  •  When you need to define an object type’s characteristics, use an interface. When you need to define an object type’s capabilities, use an abstract class.
  •  Interfaces are a legacy of older versions of C# and are interchangeable with the newer abstract class feature.
  •  When you need a list of capabilities and data that are class-agnostic, use an interface. When you need a certain object type to share characteristics, use an abstract class.
  •  You should use both an interface and an abstract class when defining any complex object.

Q2. Which statement is true of delegates?

  •  Delegates are not supported in the current version of C#
  •  They cannot be used as callbacks.
  •  Only variables can be passed to delegates as parameters.
  •  They can be chained together.

Official documentation: Delegates

Q3. Which choice best defines C#’s asynchronous programming model?

  •  reactive
  •  inherited callback
  •  task-based
  •  callback-based

Official documentation: Task asynchronous programming model

Q4. How would you determine if a class has a particular attribute?

  •  A
var type = typeof(SomeType);
var attribute = type.GetCustomAttribute<SomeAttribute>();
Code language: JavaScript (javascript)
  •  B
var typeof(MyPresentationModel).Should().BeDecoratedWith<SomeAttribute>();
Code language: JavaScript (javascript)
  •  C
Attribute.GetCustomAttribute, typeof(SubControllerActionToViewDataAttribute)
Code language: JavaScript (javascript)
  •  D
Attribute.GetCustomAttribute(typeof(ExampleController), typeof(SubControllerActionToViewDataAttribute))
Code language: JavaScript (javascript)
  1. Official documentation: Attribute Class
  2. Official documentation: Attribute.GetCustomAttribute Method

Q5. What is the difference between the ref and out keywords?

  •  Variables passed to specify that the parameter is an output parameter, while ref specifies that a variable may be passed to a function without being initialized.
  •  Variables passed to ref can be passed to a function without being initialized, while out specifies that the value is a reference value that can be changed inside the calling method.
  •  Variables passed to out can be passed to a function without being initialized, while ref specifies that the value is a reference value that can be changed inside the calling method.
  •  Variables passed to ref specify that the parameter is an output parameter, while out specifies that a variable may be passed to a function without being initialized.
  1. Official documentation: ref
  2. Official documentation: out parameter modifier

Q6. How could you retrieve information about a class, as well as create an instance at runtime?

  •  reflection
  •  serialization
  •  abstraction
  •  dependency injection

Official documentation: Reflection

Q7. What is this code an example of?

privatestaticobject objA;
    privatestaticobject objB;

    private static void performTaskA()
    {
        lock (objB)
        {
            Thread.Sleep(1000);
            lock (objA) { }
        }
    }

    private static void PerformTaskB()
    {
        lock (objA)
        {
            lock (objB) { }
        }
    }
Code language: JavaScript (javascript)
  •  a private class that uses multithreading
  •  multithread coding
  •  thread mismanagement
  •  a potential deadlock

Official documentation: Deadlocks and race conditions

Q8. What is the difference between an anonymous type and a regular data type?

  •  Anonymous types don’t have type names
  •  Anonymous types can only be static
  •  Anonymous types can be used only in struts
  •  Anonymous types don’t work with LINQ.

Official documentation: Anonymous Types

Q9. When would you use a Dictionary rather than an Array type in your application?

  •  When you need a jagged collection structure
  •  When you need to store values of the same type
  •  When you need to store key-value pairs rather than single values
  •  When you need an ordered, searchable list

Official documentation: Dictionary Class

Q10. What is the difference between a.Equals(b) and a == b?

  •  The .Equals method compares reference identities while the == compares contents.
  •  The .Equals method compares primitive values while == compares all values.
  •  The .Equals method compares contents while == compares reference identity.
  •  The .Equals method compares reference types while == compares primitive value types

Official documentation: Object.Equals

Q11. Which choice best describes a deadlock situation?

  •  when you try to instantiate two objects at the same time in the same class or struct
  •  when you are trying to execute an action after a user event is registered
  •  when simultaneous instructions are waiting on each other to finish before executing
  •  when you try to execute a series of events simultaneously on multiple threads

Official documentation: Deadlocks and race conditions

Q12. How does the async keyword work?

  •  It allows access to asynchronous methods in the C# API
  •  It allows thread pooling and synchronous processes in static classes.
  •  It allows the await keyword to be used in a method
  •  It allows access to synchronous methods in the C# API

Official documentation: async

Q13. What is an object in C#?

  •  a class or struct, including its variables and functions
  •  a primitive data type that can be created only at compile time
  •  a value type that can be used only with an abstract class
  •  an instance of a class or struct that includes fields, properties, and/or methods

Official documentation: Objects

Q14. Which code snippet declares an anonymous type named userData?

  •  var<<!—->T> userData = new <<!—->T> { name = “John”, age = 32 };
  •  var userData = new { name = “John”, age = 32 };
  •  AType userData = new AType { name = “John”, age = 32 };
  •  Anonymous<T> userData = new Anonymous<T> { name = “John”, age = 32 };

Official documentation: Anonymous Types

Q15. What will be returned when this method is executed?

public void userInput(string charParameters) { }

  •  Nothing
  •  a Boolean
  •  a string variable
  •  an integer

Official documentation: void

Q16. In what order would the employee names in this example be printed to the console?

string[] employees = { "Joe", "Bob", "Carol", "Alice", "Will" };

IEnumerable<string> employeeQuery = from person in employees
                                    orderby person
                                    select person;

foreach(string employee in employeeQuery)
{
    Console.WriteLine(employee);
}
Code language: JavaScript (javascript)
  •  ascending
  •  unordered
  •  descending
  •  first in, first out

Q17. Lambda expressions are often used in tandem with which of the following?

  •  Namespaces
  •  LINQ
  •  Type Aliasing
  •  Assemblies

Official documentation: Language Integrated Query (LINQ) Overview

Q18. What is the correct formatting for single-line and multiline comments?

  •  /_/ – Single Line /_ – Multiline
  •  // Multiline /_ Single Line _/
  •  //\* Multiline / Single Line
  •  // Single Line /* Multiline */

Q19. How do you make a method in an abstract class overridable?

  •  Make it public
  •  Make it static
  •  Make it private
  •  Make it virtual
  1. Official documentation: virtual
  2. Official documentation: abstract

Q20. How would you write code for an integer property called Age with a getter and setter?

  •  public int Age { get – set }
  •  public int Age: get set;
  •  public int Age (get, set );
  •  public int Age { get; set; }

Official documentation: Using Properties

Q21. What is an abstract class?

  •  a class that is denoted by the class keyword (can be seen and used by any other class in the system–thus it is by default public)
  •  something denoted by the abstract keyword and used system-wide; if you want any program to create an object of a class you use the abstract class
  •  a class that is denoted by the virtual keyword
  •  a class that can be used only as a base class

Official documentation: Abstract and Sealed Classes and Class Members

Q22. When using a thread pool what happens to a given thread after it finishes its task?

  •  The thread is destroyed and memory is freed up.
  •  The thread runs in a loop until the next assignment.
  •  The thread goes inactive in the background and waits for garbage collection.
  •  The thread returns to the pool for reuse.

Official documentation: Thread pool characteristics

Q23. Which choice represents a class that inherits behavior from a base class?

  •  a second base class
  •  a revised class
  •  a derived class
  •  a parent class

Official documentation: Inheritance

Q24. What does operator overloading allow you to do?

  •  hide built-in operators when necessary
  •  add methods to be interpreted by the compiler at runtime
  •  define how enums and other primitive value types work within the rest of the application
  •  define custom functionality for common operators like addition and equality

Official documentation: Operator overloading

Q25. What is the main purpose of LINQ?

  •  to delete duplicate data
  •  to bind namespaces and assemblies
  •  to query and transform data
  •  to connect assemblies

Official documentation: Language Integrated Query (LINQ) Overview

Q26. What is the correct syntax for a new generic list of strings named contacts?

  •  public List contacts = new List();
  •  public List(string names) contacts = new List(string names)();
  •  var contacts = new List();
  •  var contacts = new List(string);

Official documentation: List Class

Q27. What is the difference between throw exceptions and throw clauses?

  •  Throw clauses fire only at runtime, while throw exceptions can fire at any time.
  •  Throw exceptions overwrite the stack trace, while throw clauses retain the stack information.
  •  Throw clauses overwrite the stack trace, while throw exceptions retain the stack information.
  •  Throw exceptions fire only at runtime, while throw clauses can fire during compile time.

Official documentation: throw

Q28. When an asynchronous method is executed, the code runs but nothing happens other than a compiler warning. What is most likely causing the method to not return anything?

  •  The return yield statement is missing at the end of the method.
  •  The method is missing an await keyword in its body.
  •  The wait keyword is missing from the end of the method.
  •  The yield keyword is missing from the method.

Official documentation: Starting tasks concurrently

Q29. What are C# events?

  •  system actions that communicate directly with the compiler at runtime
  •  actions that execute when the code compiles, generating logs and test output
  •  actions that generate notifications, which are sent to their registered listeners
  •  user-only methods that send data to the application’s back end

Official documentation: Introduction to events

Q30. What kind of values can arrays store?

  •  unordered collections of numeric values
  •  key-value pairs of any C# supported type
  •  class and struct instances
  •  multiple variables, or collections, of the same type

Official documentation: Arrays

Q31. Given this enumeration, how would you access the integer-type value of ‘AppState.Loading’?

enum AppState { OffLine, Loading, Ready }

  •  string currentState = (string)AppState.Loading;
  •  string currentState = AppState.Loading.integralVal;
  •  int currentState = AppState.Loading.rawValue;
  •  int currentState = (int)AppState.Loading;

Official documentation: Enumeration types

Q32. What character would you use to start a regular expression pattern at a word boundary?

  •  d
  •  \a
  •  \b
  •  \w

Official documentation: Regular Expression Language – Quick Reference

Q33. To conform to the following interface, which of its members need to be implemented?

publicinterfaceINameable
{
    string FirstName { get; set; }
    string LastName { get; }
}
Code language: JavaScript (javascript)
  •  Both the FirstName and LastName properties need to be implemented.
  •  Neither, they are both optional.
  •  Only the LastName property needs to be implemented.
  •  Only the FirstName property needs to be implemented.

Official documentation: interface

Q34. You’re dealing with multiple assemblies in your program, but are worried about memory allocation. At what point in the program life cycle are assemblies loaded into memory?

  •  at runtime
  •  at compile time
  •  only when required
  •  only when programmatically loaded

Official documentation: Assembly Loading

Q35. What is the most accurate description of a regular expression?

  •  A regular expression is a C# tool used to parse HTML
  •  A regular expression is a special text string for describing a search pattern.
  •  A regular expression allows a variable to be passed by reference.
  •  A regular expression allows a class to conform to the Equatable protocol.
  1. Official documentation: Regular Expression Language – Quick Reference
  2. Official documentation: .NET regular expressions

Q36. Why would you use a class field in C#

  •  To define the behaviors of the class
  •  To hold information and data contained in the class object
  •  To communicate between classes and object
  •  To store the class definition value

Official documentation: Introduction to classes

Q37. When would you use generics in your code?

  •  to increase code performance
  •  all of these answers
  •  when code reuse is a priority
  •  when type safety is important

Official documentation: Generic classes and methods

Q38. What prints to the console when this code is executed?

public delegate void AuthCallback(bool validUser);
publicstatic AuthCallback loginCallback = Login;
public static void Login()
{
    Console.WriteLine("Valid user!");
}

public static void Main(string[] args)
{
    loginCallback(true);
}
Code language: JavaScript (javascript)
  •  Login successful…
  •  Valid user!
  •  an error, because the method signature of Login doesn’t match the delegate
  •  Login successful… Valid user!
  1. Official documentation: Introduction to Delegates
  2. Official documentation: Introduction to Events

Q39. How would you declare a sealed class named User?

  •  public class User {}
  •  abstract User {}
  •  sealed class User {}
  •  private sealed class User {}

Official documentation: Abstract and Sealed Classes and Class Members

Q40. What is the difference between non-static and static classes?

  •  non-static classes need to be initialized before use, while static classes do not
  •  non-static classes are accessible only from an interface while static classes are accessible from anywhere
  •  non-static classes need to initialize all class members at runtime, while static classes do not
  •  non-static classes do not need to be initialized while static classes do

Official documentation: Static Constructors

Q41. Which characteristic prevents this code from compiling?

public int age=”28″

  •  type safety
  •  single inheritance
  •  dependency injection
  •  multiple inheritance

Q42. How would you serialize this class?

public class User {}

  •  Mark the User class with the DeserializableAttribute.
  •  Declare the class as public serializable class User {}.
  •  Mark the User class with the SerializableAttribute attribute.
  •  Declare the class as private serializable class User {}.

Official documentation: SerializableAttribute Class

Q43. How would you write a delegate named ResultCallback with an int parameter named responseCode?

  •  public delegate ResultCallback(int responseCode);
  •  public delegate void ResultCallback<(int) responseCode>;
  •  public void delegate ResultCallback<int responseCode>;
  •  public delegate void ResultCallback(int responseCode);

Official documentation: Delegates

Q44. What is the difference between a static and non-static method?

  •  non-static methods always need to have a void return type
  •  non-static methods do not have access to static member variables
  •  static methods do not have to instantiate an instance of the class to call the method
  •  static methods always have to be public

Official documentation: Static Members

Q45. What is the correct way to write an event named apiResult based on a delegate named ResultCallback?

  •  public void event ResultCallback apiResult;
  •  public event ResultCallback(() -> apiResult);
  •  public event void ResultCallback
  •  public event ResultCallback apiResult;

Official documentation: Introduction to events

Q46. When will the code inside finally block be executed in a try-catch statement?

  •  if there is an error, it won’t execute at all
  •  between the try and catch blocks
  •  after the try and catch blocks
  •  when the finally block overrides the catch block and executes in its place

Official documentation: try-catch

Q47. What method correctly extends the string class?

  •  public static string IsvalidName(this string i, string value) {}
  •  public static void IsvalidName(this string i, string value) {}
  •  public string IsvalidName(this string i, string value) {}
  •  public void IsvalidName(this string i, string value) {}

Q48. How are C# classes limited?

  •  They do not support multiple inheritance.
  •  They support multiple inheritance.
  •  They can have only a set number of properties.
  •  They can have only a set number of methods.

Official documentation: Class inheritance

Q49. What function do namespaces perform?

  •  Namespaces calculate code coverage at runtime.
  •  Namespaces compile application code together at compile time.
  •  Namespaces group code together into a single repository.
  •  Namespaces separate code into groupings, control access, and avoid naming collisions.

Official documentation: namespace

Q50. What is the correct way to write a public property with a private backing field?

  •  A
privateint _password;
pubic int Password = { get; set; }
Code language: JavaScript (javascript)
  •  B
privateint _password;
publicint Password = _password;
  •  C
privateint _password;
publicint Password
{
  get -> _password;
  set-> _password = value;
}
Code language: JavaScript (javascript)
  •  D
privateint _password;
publicint Password
{
  get { return _password; }
  set { _password = value; }
}
Code language: JavaScript (javascript)

Official documentation: Using Properties

Q51. What is a thread pool?

  •  a collection of synchronous methods created during initialization that cannot be reused
  •  a collection of threads created during initialization that can be reused
  •  a collection of threads only recognized at compile time that can be reused
  •  a collection of asynchronous methods created at compile time that cannot be reused

Official documentation: ThreadPool Class

Q52. When an object in C# is serialized, what is it converted to?

  •  XML
  •  JSON
  •  byte stream
  •  value stream

Official documentation: Serialization

Q53. What is a delegate

  •  a variable that holds a reference to a value type and its content
  •  a specific value type that can be used only in callback methods
  •  a type that holds a reference to a method with a particular parameter list and return type
  •  a custom variable type that can be used in abstract classes

Official documentation: Delegates

Q54. What are the four keywords associated with exception handling in C#?

  •  try, catch, valid, invalid
  •  try, valid, finally, throw
  •  try, catch, finally, throw
  •  finally, throw, valid, invalid

Q55. What is the main difference between the is and as operators?

  •  The is operator checks instance types, while the as operator checks the inherited type.
  •  The is operator checks primitive data types, while the as operator checks the object type.
  •  The as operator checks the object type, while the is operator attempts to cast an object to a specific type.
  •  The is operator checks the object type, while the as operator attempts to cast an object to a specific type.

Q56. What is the difference between finally and finalize blocks?

  •  The finally block is called during the execution of a try and catch block, while the finalize method is called after garbage collection.
  •  The finally block is called after the execution of a try and catch block, while the finalize method is called just before garbage collection.
  •  The finalize block is called before the execution of a try and catch block, while the finally method is called just before garbage collection.
  •  The finalize block is called during the execution of a try and catch block, while the finally method is called after garbage collection.

Q57. Your application has a value type called username that needs to be able to accept null values, but this is generating compile-time errors. How would you fix this in code?

  •  Null username = null;
  •  string? username = null;
  •  Type? username = null;
  •  Optional username = null;

Q58. Which code snippet correctly declares a custom exception named InvalidResponse?

  •  struct InvalidResponse: Exception {}
  •  class InvalidResponse: Exception {}
  •  public Exception InvalidResponse = new Exception ();
  •  public Exception InvalidResponse () -> Exception;

Official documentation: Exceptions

Q59. How would you write an enum variable called AppState with values for Offline, Loading, and Ready?

  •  enum AppState = [Offline, Loading, Ready]
  •  enum AppState {“Offline”, “Loading”, “Ready”}
  •  enum AppState = {Offline, Loading, Ready}
  •  enum AppState {Offline, Loading, Ready}

Official documentation: Enum

Q60. What is the main difference between a value type and a reference type?

  •  A value type can be any primitive type, while reference types must be type-agnostic.
  •  A value type refers to another value, while a reference type refers to a value in memory.
  •  A value type stores an actual value, while a reference type is a pointer to a value.
  •  A value type is available only at runtime, while a reference type is available only at compile time.
  1. Official documentation: Value types
  2. Official documentation: Reference types

Q61. What is the difference between the break and continue keywords?

  •  The break keyword is used to break out of multiple iteration statements, while continue can only break out of code blocks that have single iterations.
  •  The break keyword literally breaks out of a control flow statement, while continue ignores the rest of the control statement or iteration and starts the next one.
  •  The break keyword literally breaks out of the current control flow code and stops it dead, while continue keeps executing the code after an exception is thrown.
  •  The break keyword jumps out of an iteration and then proceeds with the rest of the control flow code, while continue stops the executing code dead.

Official documentation: Jump statements

Q62. Which code snippet correctly declares a variable named userId with a public get and private set?

  •  public int userID <get, set>;
  •  public int userID [get, private set];
  •  public int userID { get; private set; }
  •  public int userID = { public get, private set };

Official documentation: Properties

Q63. What is true about virtual methods?

  •  Overriding virtual methods in a derived class is mandatory.
  •  Overriding virtual methods in a derived class is not possible.
  •  Virtual methods always need a default implementation.
  •  Virtual methods cannot have a default implementation.

Official documentation: virtual

Q64. What is likely to happen if you have multiple threads accessing the same resource in your program?

  •  resource overload
  •  thread jumping
  •  deadlock and race conditions
  •  nothing, since this is what threading is for

Official documentation: race conditions

Q65. How do you indicate that a string might be null?

  •  A string cannot be nullable.
  •  string? myVariable
  •  string myVariable = null
  •  string(null) myVariable

Official documentation: nullable value types

Q66. Do you need to declare an out variable before you use it?

  •  No, you can declare an out in the parameter list.
  •  No, Out variables are no longer part of C#.
  •  You must declare it if it is a primitive type.
  •  Yes.

Q67. How would you access the last two people in an array named People?

  •  People[..^2]
  •  You cannot do this in C#.
  •  People[..^3]
  •  People[^2]

Official Documentation: Ranges

Q68. When can anonymous types be created?

  •  at compile time
  •  after runtime
  •  at runtime
  •  after compile time

Q69. What is true about thread multitasking?

  •  Thread multitasking allows code to be executed concurrently
  •  Thread multitasking allows code to be executed only when handling a user event.
  •  Thread multitasking blocks code from being executed simultaneously to guard memory.
  •  Thread multitasking adds single-threaded code blocks together.

Official Documentation: Threads

Q70. What accessibility level does this class field have?

private string LastName;

  •  It can be used by other code only in the same class or struct.
  •  It can be used by other code in a referenced assembly.
  •  It can be used only by code contained in a derived class.
  •  It can be used by other code in the same assembly.

Official Documentation: Accessibility Levels

Q71. How would you correctly declare a jagged array called ‘partyInvites’ with 10 empty elements?

  •  string[] partyInvites = new string[10];
  •  string[][] partyInvites = new string[10][];
  •  string[][] partyInvites = new string[10]();
  •  string <[]> partyInvites = new string <[10]>;

Official Documentation: Jagged Arrays

Q72. How could you pause a thread for three seconds?

  •  Thread.Pause(3000);
  •  Thread.Resume(-3000);
  •  Thread.Suspend(3000);
  •  Thread.Sleep(3000);

Reference

Q73. What is wrong with this code?

void MyFunction()
{
    {
        int a = 10;
        int b = 20;
        int c = a + b;
    }

    Console.WriteLine(c);
}
Code language: JavaScript (javascript)
  •  Variable c is never used; displaying it on the console does not count as usage.
  •  Variables a and b are never used.
  •  You cannot place code inside brackets inside another block.
  •  Variable c no longer exists outside the block.

Q74. Which statement is True?

  •  All are true.
  •  None are true.
  •  string is a value type.
  •  string is an alias for String

Q75. How would you return more than one value from a method?

  •  Use either a tuple or an out variable.
  •  The only way is to use an out variable.
  •  The only way is to use a tuple.
  •  This cannot be done

Q76. Which is a valid example of a derived class?

  •  public class PremiumUser sub User {}
  •  public class PremiumUser: User {}
  •  public class PremiumUser -> sub User {}
  •  public class User: PremiumUser {}

Q77. What is the correct way to call a static method named DebugString from a static class called InputManager?

  •  static InputManager.DebugString();
  •  InputManager().DebugString;
  •  new InputManager().DebugString();
  •  InputManager.DebugString();

Q78. What values can be assigned to this variable?

publicstring? nickname
  •  null
  •  String values
  •  String values or null
  •  String values with more than one character

Q79. What is a destructor?

  •  a special called automatically whenever an object is created or updated
  •  an implicit method called automatically when thread pools are processed concurrently
  •  an explicit method called automatically when the compiler starts running
  •  a special method called automatically whenever an object is deleted or destroyed

Reference

Q80. Which code snippet correctly declares a CustomInt type alias of type Int32?

  •  typealias CustomInt = System.Int32;
  •  var<T> CustomInt = Int32;
  •  using CustomInt = System.Int32;
  •  type CustomInt = System<Int32>;

Reference

Q81. What is an enumeration type?

  •  an object of pass by reference type
  •  a value type that cannot hold constants
  •  set of named integral constants
  •  an object of pass-by-value type

Q82. What is the readonly keyword used for in-field declarations?

  •  to declare a member variable that cannot be calculated at runtime
  •  to declare a field whose value can be assigned only before the constructor exits
  •  to declare a static variable that must be set at compile time
  •  to declare a static variable that must be set at runtime

Q83. Which statement is true of C# methods?

  •  Methods store variables.
  •  Methods are actions that an object can take
  •  A method can be used only once per C# file.
  •  A method determines the state of a given property.

Official documentation: Methods (C# Programming Guide)

Q84 Which is a valid built-in C# Exception class?

  •  ArgumentNullValue
  •  InvalidFormatFoundException
  •  IndexOutOfPocket
  •  ArgumentNullException

Official documentation: ArgumentNullException Class

Q85. What is the purpose of an interface in C#?

  •  Interfaces are used to store data.
  •  Interfaces define a contract that classes must adhere to, specifying a set of methods and properties that implementing classes must provide.
  •  Interfaces are used to create instances of classes.
  •  Interfaces are used for code organization.

Official Documentation: Interfaces (C# Programming Guide)

Q86. What is the primary purpose of the finally block in a C# try-catch-finally statement?

  •  The finally block is used to handle exceptions.
  •  The finally block is used to define the main logic of the try-catch statement.
  •  The finally block is optional and not required in try-catch statements.
  •  The finally block is used to ensure that certain code is executed regardless of whether an exception occurs.

Official Documentation: try-catch (C# Reference)

Q87. Which data structure in C# allows you to store key-value pairs and is often used for quick data retrieval?

  •  ArrayList
  •  List
  •  Array
  •  Dictionary

Official Documentation: Dictionary Class

Q88 The execution of the program begins with?

  •  Main()
  •  Get()
  •  Class()
  •  Display()

Q89 In C# ‘using’ is a?

  •  Class
  •  Directive
  •  Function
  •  Keyword
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