C# mcq questions with answer – Set 3

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• Total Number Of Questions : 10
• Passing Marks : 7
• Each Question Carry 1 Mark, No Negative Marking.
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#1. Which of the following are valid .NET CLR JIT performance counters?

Select all that apply:

Total memory used for JIT compilation

Total memory used for JIT compilation

Average memory used for JIT compilation

Average memory used for JIT compilation

Number of methods that failed to compile with the standard JIT

Number of methods that failed to compile with the standard JIT

Percentage of processor time spent performing JIT compilation

Percentage of processor time spent performing JIT compilation

#2. Which of the following jobs are done by Common Language Runtime?

Select all that apply:

It provides core services such as memory management, thread management, and remoting.

It provides core services such as memory management, thread management, and remoting.

It enforces strict type safety.

It enforces strict type safety.

It provides Code Access Security.

It provides Code Access Security.

It provides Garbage Collection Services.

It provides Garbage Collection Services.

#3. Which one of the following statements is correct?

Array elements can be of integer type only.

Array elements can be of integer type only.

The rank of an Array is the total number of elements it can contain.

The rank of an Array is the total number of elements it can contain.

The length of an Array is the number of dimensions in the Array.

The length of an Array is the number of dimensions in the Array.

The default value of numeric array elements is zero.

The default value of numeric array elements is zero.

#4. Which one of the following classes are present 'System.Collections.Generic' namespace?

Select all that apply:

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Stack

Stack

Tree

Tree

SortedDictionary

SortedDictionary

SortedArray

SortedArray

#5. Which of the following CANNOT be used as an underlying datatype for an 'enum' in C#.NET?

byte

byte

short

short

float

float

int

int

#6. Which of the following statements is correct about an 'enum' used in C#.NET?

'enum' is a reference type

'enum' is a reference type

'enum' is a value type.

'enum' is a value type.

Whether it a value type or a reference type depends upon size.

Whether it a value type or a reference type depends upon size.

Whether it a value type or a reference type depends upon a Project Setting made in Visual Stiiclio.NET.

Whether it a value type or a reference type depends upon a Project Setting made in Visual Stiiclio.NET.

#7. Which of the following statements are correct?

Select all that apply:

The signature of an indexer consists of the number and types of its formal parameters.

The signature of an indexer consists of the number and types of its formal parameters.

Indexers are similar to properties except that their accessors take parameters.

Indexers are similar to properties except that their accessors take parameters.

Accessors of interface indexers use modifiers.

Accessors of interface indexers use modifiers.

The type of an indexer and the type of its parameters must be at least as accessible as the indexer itself.

The type of an indexer and the type of its parameters must be at least as accessible as the indexer itself.

#8. Which of the following statements are correct?

Select all that apply:

All operators in C#.NET can be overloaded.

All operators in C#.NET can be overloaded.

We can use the 'new' modifier to modify a nested type if the nested type is hiding another type.

We can use the 'new' modifier to modify a nested type if the nested type is hiding another type.

In case of operator overloading all parameters must be of the different type than the class or struct that declares the operator.

In case of operator overloading all parameters must be of the different type than the class or struct that declares the operator.

Operator overloading permits the use of symbols to represent computations for a type.

Operator overloading permits the use of symbols to represent computations for a type.

#9. Which of the following statements are correct about functions and subroutines used in C#.NET?

Select all that apply:

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A function cannot be called from a subroutine.

A function cannot be called from a subroutine.

The 'ref' keyword causes arguments to be passed by reference.

The 'ref' keyword causes arguments to be passed by reference.

While using ref keyword any changes made to the parameter in the method will be reflected in that variable when control passes back to the calling method.

While using ref keyword any changes made to the parameter in the method will be reflected in that variable when control passes back to the calling method.

Functions and subroutines can be called recursively.

Functions and subroutines can be called recursively.

#10. Which of the following CANNOT occur multiple number of times in a program?

namespace

namespace

Entrypoint

Entrypoint

Class

Class

Function

Function

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