.NET Framework Test

What is the difference between a stack and a queue?

QUEUES PROCESS VALUE TYPES BY A TOP-DOWN HIERARCHY—LAST IN, FIRST-OUT (LIFO). STACKS FOLLOW THIS PRINCIPLE AND INSERT ITEMS FROM THE LOWER END WHILE DELETING ONES FROM THE TOP—FIRST IN, FIRST OUT (FIFO).

STACKS PROCESS VALUE TYPES BY A TOP-DOWN HIERARCHY—FIRST IN, FIRST OUT (FIFO). QUEUES FOLLOW THIS PRINCIPLE AND INSERT ITEMS FROM THE LOWER END WHILE DELETING ONES FROM THE TOP—LAST IN, FIRST-OUT (LIFO).

STACKS PROCESS VALUE TYPES BY A TOP-DOWN HIERARCHY—LAST IN, FIRST-OUT (LIFO). QUEUES FOLLOW THIS PRINCIPLE AND INSERT ITEMS FROM THE LOWER END WHILE DELETING ONES FROM THE TOP—FIRST IN, FIRST OUT (FIFO).

QUEUES PROCESS VALUE TYPES BY A TOP-DOWN HIERARCHY—FIRST IN, FIRST OUT (FIFO). STACKS FOLLOW THIS PRINCIPLE AND INSERT ITEMS FROM THE LOWER END WHILE DELETING ONES FROM THE TOP—LAST IN, FIRST-OUT (LIFO).

Which choice contains all official types of JIT compilations?

PRE-JIT, ECONO-JIT, NORMAL-JIT

BEFORE-JIT, QUICK-JIT, COOL-JIT

PRE-JIT, QUICK-JIT, COOL-JIT

PRE-JIT, QUICK-JIT, NORMAL-JIT

What is Kestrel?

A CROSS-PLATFORM WEB SERVER FOR ASP.NET CORE THAT IS INCLUDED BY DEFAULT IN ASP.NET CORE PROJECT TEMPLATES

AN IOS WEB SERVER INITIALLY THAT WAS LATER DESIGNED TO WORK WITH .NET CORE

A CROSS-PLATFORM, OPEN-SOURCE WEB SERVER THAT STARTS UP WEB APIS

A FREE AND OPEN-SOURCE CROSS-PLATFORM WEB SERVER SOFTWARE THAT CAN COMMUNICATE WITH IIS

When would you use asynchronous actions?

TO AVOID BLOCKING THE REQUEST THREAD WHILE IT WAITS FOR AN I/O OPERATION

TO CAPTURE THE REQUEST THREAD OF AN I/O OPERATION

TO BLOCK THE REQUEST THREAD IF IT WAITS FOR AN I/O OPERATION

TO RELEASE THE REQUEST THREAD OF AN I/O OPERATION

What is CoreCLR?

CORECLR IS THE .NET EXECUTION ENGINE THE RUNS THE SOURCE CODE. SPECIAL PROGRAMS CALLED COMPILERS MUST REWRITE IT INTO IL.

CORECLR IS THE .NET EXECUTION ENGINE IN .NET CORE THAT PERFORMS FUNCTIONS LIKE GARBAGE COLLECTION AND COMPILATION TO MACHINE CODE.

CORECLR IS A COMPONENT THAT ALLOWS THE HIGHEST DEGREE OF CONTROL WHEN CODING; YOU CAN ABORT(), SUSPEND(), OR RESUME().

CORECLR IS THE .NET EXECUTION ENGINE THAT RUNS THE SOURCE CODE. SPECIAL PROGRAMS CALLED COMPILERS MUST REWRITE IT INTO MSIL.

When you define an abstract method, how do you use it in a derived class?

IN YOUR DERIVED CLASS, DECLARE THE METHOD AS VIRTUAL.

IN YOUR DERIVED CLASS, OVERRIDE THE METHOD.

ABSTRACT METHODS CANNOT BE USED IN DERIVED CLASSES.

IN YOUR DERIVED CLASS, OVERLOAD THE METHOD.

Which code do you use if you want to trigger a garbage collection in .NET?

GARBAGE.CLEANUP();

GARBAGE.COLLECT();

SYSTEM.GC.CLEAR();

SYSTEM.GC.COLLECT();

You want to include language elements in a program. Which design pattern best fits this objective?

INTERPRETER

COMMAND

BRIDGE

DECORATOR

What makes a strong-named assembly?

AN ASSEMBLY WITH THE VERSION SPECIFIED

AN ASSEMBLY WITH THE NAME MARKED AS IMPORTANT

AN ASSEMBLY WITH CULTURE INFORMATION

A SIGNED ASSEMBLY

What happens when you concatenate two strings?

THE FIRST STRING OBJECT IS MODIFIED SO IT CONTAINS THE CONCATENATED STRINGS.

THE SECOND STRING OBJECT IS MODIFIED SO IT CONTAINS THE CONCATENATED STRINGS.

A THIRD STRING OBJECT IS CREATED CONTAINING THE CONCATENATED STRINGS.

YOU CANNOT CONCATENATE STRINGS IN .NET.

What is a delegate?

A DELEGATE IS A COLLECTION INITIALIZER THAT ADDS FLEXIBILITY, READABILITY, AND MAINTAINABILITY IN .NET.

A DELEGATE IN .NET IS SIMILAR TO A FUNCTION POINTER IN C OR C++. A DELEGATE ALLOWS THE PROGRAMMER TO ENCAPSULATE A REFERENCE TO A METHOD INSIDE A DELEGATE OBJECT.

A DELEGATE IS AN EXTENSION METHOD. USING A DELEGATE ALLOWS THE PROGRAMMER TO ADD FLEXIBILITY, READABILITY, AND MAINTAINABILITY IN .NET.

A DELEGATE IS AN OBJECT OR COLLECTION INITIALIZER THAT ADDS FLEXIBILITY, READABILITY, AND MAINTAINABILITY IN C#.

Which is a set of features that extends the query capabilities of the .NET language syntax by adding sets of new standard query operators that allow data manipulation, regardless of the data source?

LINQ

C#

XAML

XML

What is the single responsibility principle?

SOFTWARE ENTITIES SHOULD BE OPEN FOR EXTENSION, BUT CLOSED FOR MODIFICATION.

A CLASS SHOULD HAVE ONLY A SINGLE RESPONSIBILITY—THAT IS, ONLY CHANGES TO ONE PART OF THE SOFTWARE'S SPECIFICATION SHOULD BE ABLE TO AFFECT THE SPECIFICATION OF THE CLASS.

OBJECTS IN A PROGRAM SHOULD BE REPLACEABLE WITH INSTANCES OF THEIR SUBTYPES WITHOUT ALTERING THE CORRECTNESS OF THAT PROGRAM.

ENTITIES MUST DEPEND ON ABSTRACTIONS, NOT ON CONCRETE IMPLEMENTATIONS.

When should a developer use the .NET Standard class library project type?

WHEN YOU WANT TO INCREASE COMPILATION SPEED AND HAVE FEWER FEATURES

WHEN YOU WANT TO INCREASE THE NUMBER OF APPS THAT ARE COMPATIBLE WITH YOUR LIBRARY, AND DECREASE THE .NET API SURFACE AREA YOUR LIBRARY CAN ACCESS

WHEN YOU WANT TO INCREASE THE .NET API SURFACE AREA YOUR LIBRARY CAN ACCESS, AND ALLOW ONLY .NET CORE APPS TO BE COMPATIBLE WITH YOUR LIBRARY

WHEN YOU WANT TO DECREASE SPEED BUT HAVE MORE FEATURES

Assuming y is a value type, which is an example of boxing?

OBJECT THISOBJECT = Y;

INT Y = 3;

Y = (INT)THISOBJECT=;3;

Y = (INT)THISOBJECT;

What is an abstract class in .NET?

AN ABSTRACT CLASS PROVIDES A PARTIAL IMPLEMENTATION FOR FUNCTIONALITY AND SOME ABSTRACT OR VIRTUAL MEMBERS THAT MUST BE IMPLEMENTED BY THE INHERITING ENTITIES. IT CAN DECLARE FIELDS TOO. <= CORRECT

AN ABSTRACT CLASS ALLOWS DEVELOPERS TO CREATE NEW CLASSES THAT REUSE, EXTEND, AND MODIFY THE BEHAVIOR DEFINED IN OTHER CLASSES.

AN ABSTRACT CLASS IS RESPONSIBLE FOR KEEPING TRACK OF WHAT IS ACTUALLY EXECUTING AND WHERE EACH EXECUTING THREAD IS.

AN ABSTRACT CLASS DECLARES A CONTRACT OR BEHAVIOR THAT IMPLEMENTING CLASSES REQUIRE. IT MAY DECLARE ONLY PROPERTIES, METHODS, AND EVENTS WITH NO ACCESS MODIFIERS. ALL THE DECLARED MEMBERS MUST BE IMPLEMENTED.

What is the namespace for caching information in .NET?

SYSTEM.RUNTIME.CACHING;

SYSTEM.DATA.CACHING;

SYSTEM.COMPILER.CACHING;

ALL.SYSTEM.CACHING;

What is an interface in .NET?

AN INTERFACE IS RESPONSIBLE FOR KEEPING TRACK OF WHAT IS ACTUALLY EXECUTING AND WHERE EACH EXECUTING THREAD IS.

AN INTERFACE PROVIDES A PARTIAL IMPLEMENTATION FOR FUNCTIONALITY AND SOME ABSTRACT OR VIRTUAL MEMBERS THAT MUST BE IMPLEMENTED BY THE INHERITING ENTITIES. IT CAN DECLARE FIELDS TOO.

AN INTERFACE ALLOWS DEVELOPERS TO CREATE NEW CLASSES THAT REUSE, EXTEND, AND MODIFY THE BEHAVIOR DEFINED IN OTHER CLASSES.

AN INTERFACE DECLARES A CONTRACT OR BEHAVIOR THAT IMPLEMENTING CLASSES REQUIRE. IT MAY DECLARE ONLY PROPERTIES, METHODS, AND EVENTS WITH NO ACCESS MODIFIERS. ALL THE DECLARED MEMBERS MUST BE IMPLEMENTED.

Which is NOT true about lambda statements?

A STATEMENT LAMBDA CANNOT RETURN A VALUE.

A STATEMENT LAMBDA CAN HAVE MORE THAN ONE STATEMENT.

A STATEMENT LAMBDA REQUIRES USING CURLY BRACES.

IF A STATEMENT LAMBDA HAS A RETURN VALUE, IT HAS TO USE A RETURN STATEMENT.

Which is NOT true about a read-only variable?

AT RUNTIME, ITS VALUE IS EVALUATED.

IT CAN BE INITIALIZED AT DECLARATION ONLY.

IT CAN BE EITHER STATIC OR AN INSTANCE MEMBER.

IT CAN BE INITIALIZED IN EITHER THE CONSTRUCTOR OR THE DECLARATION.

What is the difference between System.String and string?

THERE IS NO SUCH CLASS AS SYSTEM.STRING.

THERE IS NONE—STRING IS AN ALIAS FOR SYSTEM.STRING.

SYSTEM.STRING IS A VB.NET DATA TYPE, WHILE STRING IS A C# TYPE.

STRING IS USED FOR FIXED-SIZE STRINGS IN C#, WHILE SYSTEM.STRING IS USED FOR ALL THE STRINGS.

When break is used inside two nested for loops, does control come out of the inner for loop or the outer for loop?

IT BREAKS FROM ALL LOOPS.

IT BREAKS FROM ONLY THE INNER LOOP.

IT BREAKS FROM THE OUTER LOOP AFTER THE SECOND ITERATION.

IT BREAKS FROM ONLY THE OUTER LOOP.

You want to separate object construction from its representation. Which design pattern best fits this objective?

BRIDGE

BUILDER

SINGLETON

ADAPTER

You want to encapsulate a command request as an object. Which design pattern best fits this objective?

COMMAND

OBSERVER

FACADE

ITERATOR

Why would Pre-JIT be used by the .NET Framework?

TO COMPILE COMPLETE SOURCE CODE INTO NATIVE CODE IN A SINGLE COMPILATION CYCLE DURING DEPLOYMENT OF THE APPLICATION

TO COMPILE ONLY THE METHODS THAT ARE CALLED AT RUNTIME AND STORE THOSE METHODS IN CACHE AFTER EXECUTION

TO COMPILE ONLY THE METHODS THAT ARE CALLED AT RUNTIME AND THEN STORE THEM IN CACHE FOR ONE MINUTE

TO COMPILE ONLY THE METHODS THAT ARE CALLED AT RUNTIME AND REMOVE THEM FROM MEMORY AFTER EXECUTION

What do code contracts do?

CODE CONTRACTS CONTAIN DATA STRUCTURES FOR A GROUP OF RELATED FUNCTIONALITIES THAT A CLASS OR A STRUCT CAN IMPLEMENT.

CODE CONTRACTS ARE DATA STRUCTURES THAT CAN OPERATE ON DEMAND PER REQUIREMENTS.

CODE CONTRACTS PROVIDE A WAY TO SPECIFY PRECONDITIONS, POSTCONDITIONS, AND OBJECT INVARIANTS IN YOUR CODE.

CODE CONTRACTS CONTAIN DEFINITIONS FOR A GROUP OF RELATED FUNCTIONALITIES THAT A CLASS OR A STRUCT CAN IMPLEMENT.

You want to create a class of which only a single instance can exist. Which design pattern best fits this objective?

BRIDGE

SINGLETON

DECORATOR

ADAPTER

What is the dependency inversion principle?

ENTITIES MUST DEPEND ON ABSTRACTIONS, NOT ON CONCRETE IMPLEMENTATIONS.

SOFTWARE ENTITIES SHOULD BE OPEN FOR EXTENSION, BUT CLOSED FOR MODIFICATION.

A CLASS SHOULD HAVE ONLY A SINGLE RESPONSIBILITY—THAT IS, ONLY CHANGES TO ONE PART OF THE SOFTWARE'S SPECIFICATION SHOULD BE ABLE TO AFFECT THE SPECIFICATION OF THE CLASS.

OBJECTS IN A PROGRAM SHOULD BE REPLACEABLE WITH INSTANCES OF THEIR SUBTYPES WITHOUT ALTERING THE CORRECTNESS OF THAT PROGRAM.

What is a namespace?

A GROUP OF CLASSES, STRUCTURES, INTERFACES, ENUMERATIONS, AND DELEGATES—ORGANIZED IN A LOGICAL HIERARCHY BY FUNCTION—THAT ENABLE YOU TO ACCESS THE CORE FUNCTIONALITY YOU NEED IN YOUR APPLICATIONS

A GROUP OF METHODS—IN A LOGICAL HIERARCHY BY CLASS—THAT ENABLE YOU TO ACCESS THE CORE FUNCTIONALITY YOU NEED IN .NET

A GROUP OF GENERIC COLLECTIONS—IN A LOGICAL HIERARCHY BY FUNCTION—THAT ENABLE YOU TO ACCESS THE CORE FUNCTIONALITY YOU NEED IN YOUR APPLICATIONS

A GROUP OF ASSEMBLIES—IN A LOGICAL HIERARCHY BY FUNCTION—THAT ENABLE YOU TO ACCESS THE CORE FUNCTIONALITY YOU NEED IN YOUR APPLICATIONS

Which choice selects an anonymous type?

SELECT A

SELECT NEW { A.COUNTRY, A.REGION }

SELECT { A.COUNTRY, A.REGION }

SELECT A.COUNTRY, A.REGION

What does CAS stand for and what does it do?

CAS STANDS FOR CODE ACCESS SECURITY AND IT ENABLES USERS TO RESTRICT, ON A VERY GRANULAR LEVEL, WHAT MANAGED CODE CAN DO ACCORDING TO A LEVEL OF TRUST.

CAS STANDS FOR COGNITIVE ACCESS SECURITY AND IT ENABLES USERS TO RESTRICT SECURITY LOGIC MANIPULATION.

CAS STANDS FOR CODE ACCESS SECRETS AND IT ENABLES USERS TO RESTRICT, ON A VERY GRANULAR LEVEL, WHAT HIDDEN CODE CAN DO ACCORDING TO A LEVEL OF TRUST.

CAS STANDS FOR CODE APPLICATION SECRETS AND IT ENABLES USERS TO RESTRICT, ON A VERY GRANULAR LEVEL, WHAT HIDDEN CODE CAN DO ACCORDING TO A LEVEL OF TRUST FOR AN APPLICATION.

You must connect an app to an online identity provider using OAuth. For authentication, the app uses WebAuthenticationBroker object. You need to make sure the app registers with the provider. Which action do you take?

INVOKE THE GETCURRENTAPPLICATIONCALLBACKURI METHOD AND CONSTRUCT AN HTTPS REQUEST URI.

INVOKE THE AUTHENTICATEASYNC METHOD AND CONSTRUCT AN HTTPS REQUEST URI.

INVOKE THE AUTHENTICATEASYNC AND GETCURRENTAPPLICATIONCALLBACKURI METHODS.

CONSTRUCT AN HTTP REQUEST URI AND AN HTTPS REQUEST URI.

What is CIL?

CIL IS A COMPILED CODE LIBRARY THAT MICROSOFT DEVELOPED AS AN OPEN SPECIFICATION. DEVELOPERS USE IT FOR SECURITY, VERSIONING, AND DEPLOYMENT PURPOSES.

CIL IS USED TO CONVERT A VALUE TYPE TO AN OBJECT TYPE.

CIL IS AN OBJECT-ORIENTED PROGRAMMING LANGUAGE THAT IS A PARTIALLY COMPILED CODE THAT .NET DEVELOPERS WILL THEN COMPILE TO NATIVE MACHINE CODE.

FORMERLY KNOWN AS MSIL, CIL IS A PROGRAMMING LANGUAGE THAT .NET DEVELOPERS USE. IT REPRESENTS THE LOWEST POSSIBLE LEVEL FOR A LANGUAGE THAT HUMANS CAN STILL READ.

You want to create an instance of several families of classes. Which design pattern best fits this objective?

BRIDGE

SINGLETON

DECORATOR

ABSTRACT FACTORY

What is a thread?

A SERIES OF RELATED TASKS OR METHODS THAT TOGETHER TURN INPUTS INTO OUTPUTS

A SINGLE OPERATION THAT DOES NOT RETURN A VALUE AND THAT USUALLY EXECUTES ASYNCHRONOUSLY

THE BASIC UNIT TO WHICH AN OPERATING SYSTEM ALLOCATES PROCESSOR TIME

A PROGRAM THAT IS RUNNING ON YOUR COMPUTER

What is a task?

A SINGLE OPERATION THAT DOES NOT RETURN A VALUE AND THAT USUALLY EXECUTES ASYNCHRONOUSLY

A SERIES OF RELATED METHODS THAT TOGETHER TURN INPUTS INTO OUTPUTS

A PROGRAM THAT IS RUNNING ON YOUR COMPUTER

THE BASIC UNIT TO WHICH AN OPERATING SYSTEM ALLOCATES PROCESSOR TIME

Why use design patterns?

DESIGN PATTERNS MINIMIZE THE NUMBER OF CODE LINES WHEN CREATING COMPLEX APPLICATIONS.

DESIGN PATTERNS TEND TO BE MORE SECURE AND PREVENT CODE FROM BEING HACKED.

DESIGN PATTERNS MAKE THE CODE MORE EFFICIENT WITH MEMORY USAGE.

DESIGN PATTERNS HELP YOU SOLVE ISSUES RELATED TO SOFTWARE DEVELOPMENT USING A PROVEN SOLUTION, AND MAKE COMMUNICATION BETWEEN DEVELOPERS MORE EFFICIENT.

Which method do you need to call in order to suppress finalization of an object?

GC.DONOTFINALIZE()

FINALIZER.SKIP()

YOU CANNOT SUPPRESS FINALIZATION.

GC.SUPPRESSFINALIZE()

When should a developer use the .NET Core class library project type?

WHEN YOU WANT TO DECREASE SPEED BUT HAVE MORE FEATURES

WHEN YOU WANT TO INCREASE THE NUMBER OF APPS THAT ARE COMPATIBLE WITH YOUR LIBRARY, AND DECREASE THE .NET API SURFACE AREA YOUR LIBRARY CAN ACCESS

WHEN YOU WANT TO INCREASE THE .NET API SURFACE AREA YOUR LIBRARY CAN ACCESS, AND ALLOW ONLY .NET CORE APPS TO BE COMPATIBLE WITH YOUR LIBRARY

WHEN YOU WANT TO INCREASE COMPILATION SPEED AND HAVE FEWER FEATURES

Which group contains one or more invalid deployment features for the .NET Framework?

SIDE-BY-SIDE VERSIONING, XCOPY DEPLOYMENT, AND ON-THE-FLY UPDATES

NO-IMPACT APPLICATIONS, PRIVATE COMPONENTS, AND CONTROLLED CODE SHARING

CLR DEPLOYMENT, DOWNLOADING AND DELETING, AND PARTIALLY TRUSTED MSIL

INTEGRATION WITH MICROSOFT WINDOWS INSTALLER, ENTERPRISE DEPLOYMENT, AND DOWNLOADING AND CACHING

Which example creates an 8-tuple containing prime numbers that are less than 20?

VAR PRIMES = TUPLE.CREATE(2, 3, 5, 7, 11, 13, 17, 21);

VAR PRIMES = TUPLE.MAKE(2, 3, 5, 7, 11, 13, 17, 20);

VAR PRIMES = TUPLE.MAKE(2, 3, 5, 7, 11, 13, 17, 19);

VAR PRIMES = TUPLE.CREATE(2, 3, 5, 7, 11, 13, 17, 19);

What method do you use to explicitly kill a user's session?

SESSION.REMOVE()

SESSION.KILLALL()

SESSION.TIMEOUT()

SESSION.ABANDON();

Why would you use ahead-of-time (AOT) compilation?

YOU HAVE LITTLE MEMORY AND DISK SPACE.

YOU HAVE A SLOW PROCESSOR.

YOU CAN DELIVER A FASTER STARTUP TIME, ESPECIALLY IN BIG APPLICATIONS WHERE MUCH CODE EXECUTES ON STARTUP.

THE JIT COMPILER DOES NOT HAVE TO DO A LOT OF DISK I/O ACTIONS, WHICH ARE QUITE EXPENSIVE.

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Exam Type:	.NET Framework MCQ Skill Test
Questions Type:	Multiple Choice Questions
Total Questions:	43
Time Limit:	30 Minutes
Last Update	October, 2025

Pass .NET Framework Exam

.NET Framework Quiz

What is the difference between a stack and a queue?

Which choice contains all official types of JIT compilations?

What is Kestrel?

When would you use asynchronous actions?

What is CoreCLR?

When you define an abstract method, how do you use it in a derived class?

Which code do you use if you want to trigger a garbage collection in .NET?

You want to include language elements in a program. Which design pattern best fits this objective?

What makes a strong-named assembly?

What happens when you concatenate two strings?

What is a delegate?

Which is a set of features that extends the query capabilities of the .NET language syntax by adding sets of new standard query operators that allow data manipulation, regardless of the data source?

What is the single responsibility principle?

When should a developer use the .NET Standard class library project type?

Assuming y is a value type, which is an example of boxing?

What is an abstract class in .NET?

What is the namespace for caching information in .NET?

What is an interface in .NET?

Which is NOT true about lambda statements?

Which is NOT true about a read-only variable?

What is the difference between System.String and string?

When break is used inside two nested for loops, does control come out of the inner for loop or the outer for loop?

You want to separate object construction from its representation. Which design pattern best fits this objective?

You want to encapsulate a command request as an object. Which design pattern best fits this objective?

Why would Pre-JIT be used by the .NET Framework?

What do code contracts do?

You want to create a class of which only a single instance can exist. Which design pattern best fits this objective?

What is the dependency inversion principle?

What is a namespace?

Which choice selects an anonymous type?

What does CAS stand for and what does it do?

You must connect an app to an online identity provider using OAuth. For authentication, the app uses WebAuthenticationBroker object. You need to make sure the app registers with the provider. Which action do you take?

What is CIL?

You want to create an instance of several families of classes. Which design pattern best fits this objective?

What is a thread?

What is a task?

Why use design patterns?

Which method do you need to call in order to suppress finalization of an object?

When should a developer use the .NET Core class library project type?

Which group contains one or more invalid deployment features for the .NET Framework?

Which example creates an 8-tuple containing prime numbers that are less than 20?

What method do you use to explicitly kill a user's session?

Why would you use ahead-of-time (AOT) compilation?

.NET Framework Test Explained