C# QUIZ 3

Created on May 13, 2020 By

Sirjana GhimireAcharya

C# Quiz 3

1 / 10

Which of the following statements are correct for the given code snippet:

shape obj;

obj = new shape();

creates an object of class shape.

To create an object of type shape on the heap or stack depending on its size.

create a reference obj of the class shape and an object of type shape on the heap.

create an object of type shape on the stack.

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2. Which .NET collection class allows elements to be accessed using a unique key?

ListDictionary

Hashtable

StringCollection

ArrayList

3 / 10

3. Which of the following C# keywords has nothing to do with multithreading?

async

await

sealed

lock

4 / 10

4. Find an invalid expression among the following C# Generics examples.

class A where T : class, new()

class A where T : struct, IComparable

class A where T : class, struct

class A where T : Stream where U : IDisposable

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5. new keyword in C# is used to creat new object from the type. Which of the followings is not allowed to use new keyword?

Class: var a = new Class1();

Interface : var a = new IComparable();

Struct : var a = new Struct1();

C# object : var a = new object();

6 / 10

6. Can you specify accessibility modifier for methods inside an interface?

Yes

No

7 / 10

7. Arrange the following datatype in order of increasing magnitude sbyte, short, long, int.

short < int < sbyte < long

short < sbyte < int < long

sbyte < short < int < long

long < short < int < sbyte

8 / 10

8. How do you create a variable with the floating number 2.8?

double x = 2.8D;

int x = 2.8D;

byte x = 2.8

int x = 2.8;

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9. Which method can be used to find the length of a string?

getLength()

length()

len()

Length

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10. Which of the following access specifier in C# allows a child class to access the member variables and member functions of its base class?

Public

Private

Protected

Internal

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