Explore topic-wise InterviewSolutions in .

The correct OPTION is (b) It’s a process in which two or more parts of same process RUN simultaneously

Explanation: Multithreaded PROGRAMMING a process in which two or more parts of same process run simultaneously.

The CORRECT choice is (d) A thread can EXIST only in two STATES, running and blocked

Explanation: Thread exists in SEVERAL states, a thread can be running, suspended, blocked, terminated & ready to run.

Correct answer is (d) All of the mentioned

To explain: A semaphore is SIMILAR to a mutex except that it can grant more than one thread access to a shared RESOURCE at the same time. Thus, the semaphore is useful when a collection of resources is being SYNCHRONIZED. A semaphore controls access to a shared resource through the USE of a counter. If the counter is greater than zero, then access is allowed. If it is zero, access is DENIED.

The correct ANSWER is (a) a MUTUALLY exclusive SYNCHRONIZATION object

The BEST explanation: A mutex is a mutually exclusive synchronization object. This means it can be acquired by ONE and only one thread at a time. The mutex is designed for those situations in which a shared resource can be used by only one thread at a time.

Correct ANSWER is (c) SynchronizationLockException

The explanation: A SynchronizationLockException will be thrown if Wait(), Pulse(), or PULSEALL() is called from CODE that is not within synchronized code, such as a LOCK block.

Correct option is (c) Wait()

Explanation: When a thread is temporarily blocked from RUNNING, it calls Wait( ). This causes the thread to GO to sleep and the lock for that OBJECT to be released, ALLOWING ANOTHER thread to acquire the lock.

The correct answer is (a) It’s a process of handling situations when TWO or more threads NEED access to a shared resource

The best explanation: When two or more threads need to access the same shared resource, they need some WAY to ensure that the resource will be used by only ONE thread at a time, the process by which this is achieved is called synchronization.

Correct option is (a) LOCK

Best explanation: The C# keyword lock is really just shorthand for USING the synchronization features defined by the MONITOR CLASS, which is defined in the System.Threading namespace.

The CORRECT option is (b) START()

Explanation: Once created, the new thread will not start RUNNING until you call its Start() method, which is DEFINED by Thread.

The correct option is (C) Thread

Easiest explanation - The multithreading SYSTEM is built UPON the Thread class, which ENCAPSULATES a thread of execution. The Thread class is sealed, which means that it cannot be inherited. Thread defines several METHODS and properties that help manage threads.

Correct ANSWER is (d) both at most 1 & atleast 1

To explain I would say: All processes have at least one thread for EXECUTION, which is USUALLY called the main thread because it is the primary thread that is EXECUTED when our program BEGINS. From the main thread, we can create other threads.

Right option is (d) Only Enables to UTILIZE the idle TIME PRESENT in most programs

The explanation is: The principal advantage of MULTITHREADING is that it enables US to write very efficient programs because it lets us utilize the idle time that is present in most programs.

The correct ANSWER is (a) Process-based multitasking handles the concurrent EXECUTION of programs

Easy explanation - The differences between process-based and thread-based multitasking can be summarized like this:Process-based multitasking handles the concurrent execution of programs. Thread-based multitasking deals with the concurrent execution of pieces of the same PROGRAM.

Right answer is (d) Both A feature that allows our computer to run two or more programs concurrently & A program that acts as a small UNIT of code that can be dispatched by the scheduler

Easiest EXPLANATION - The process-based multitasking is the feature that allows your computer to run two or more programs concurrently. For example, process-based multitasking allows you to run a WORD processor at the same time you are USING a spreadsheet or browsing the Internet. In process-based multitasking, a program is the smallest unit of code that can be dispatched by the scheduler.

The correct ANSWER is (d) both process & THREAD based

The best I can explain: There are TWO DISTINCT TYPES of multitasking: process-based and thread-based.

The correct ANSWER is (b) double Floor(double X)

To EXPLAIN I WOULD say: double Floor(double X) RETURNS a largest whole number less than or EQUAL to variable X.

Correct answer is (a) double CIEL(double X)

The best I can explain: Ciel(double X) returns the SMALLEST whole number greater than or EQUAL to VARIABLE X.

The CORRECT choice is (a) MATH

The explanation: Math class contains all the floating point functions that are USED for general PURPOSE mathematics methods. Example : sin(), cos(), EXP(), sqrt() etc.

The CORRECT answer is (a) Math

Explanation: Math CLASS contains all the floating point functions that are used for geometry, trigonometry, as well as several general purpose methods. EXAMPLE : sin(), cos(), EXP(), sqrt() etc.

The CORRECT option is (d) All of the mentioned

Best explanation: MemberInfo includes two ABSTRACT methods: GetCustomAttributes( ) and IsDefined( ). These both relate to attributes. The first obtains a list of the custom attributes associated with the invoking object. The second DETERMINES if an attribute is defined for the invoking object. The .NET Framework Version 4.0 adds a method CALLED GetCustomAttributesData(), which returns information about custom attributes.

The correct OPTION is (c) MODULE Module

Easiest explanation - By DEFINITION.

Correct OPTION is (b) System.Reflection.MemberInfo

Explanation: TYPE is DERIVED from an abstract CLASS called System.Reflection.MemberInfo

Right answer is (c) Both Core of the reflection subsystem as it encapsulates a type & Consists of MANY METHODS and properties that can be used to OBTAIN information about a type at runtime

To explain I would say: System.Type is at the core of the reflection subsystem because it encapsulates a type. It CONTAINS many properties and methods that you will use to obtain information about a type at runtime.

The correct ANSWER is (c) System.Reflection

Best explanation: MANY of the classes that support reflection are PART of the .NET Reflection API, which is in the System.Reflection namespace.

eg : USING System.Reflection;

Right option is (b) Reflection

Explanation: Reflection is the feature that enables you to OBTAIN INFORMATION about a TYPE. The term reflection comes from the way the process works: A Type OBJECT mirrors the underlying type that it represents. Reflection is a powerful mechanism because it allows US to learn and use the capabilities of types that are known only at runtime.