Event-Driven Programming Mocktest (Midterm) BSIT - 505

61問 • 4ヶ月前

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The exception _______ is called when the execution stack is exhausted by having too many pending method calls.

System.StackOverflowException

class Program { static void Main() { Thread.CurrentThread.Name = "Primary Thread"; Console.WriteLine("Running on: " + Thread.CurrentThread.Name); Thread worker = new Thread(new ThreadStart(DoWork)); worker.Name = "Worker Thread"; worker.Start(); } static void DoWork() { Console.WriteLine("Running on: " + Thread.CurrentThread.Name); } } What will be the output of this program?

Running on: Primary Thread Running on: Worker Thread

A thread has finished its task.

Stopped

It is used to get or set the name of the thread

Name

It interrupts the thread that is in the state of WaitSleepJoin

public void Interrupt()

is represented by classes. All the exceptions are subclasses in this built-in exception class, wherein it is a part of namespace System.

Exception

These exceptions are user program-generated.

ApplicationException

These exceptions are generated by Common Language Runtime (CLR).

SystemException

This is at the top of the standards’ exceptions hierarchy. The runtime system in C# generates all the exceptions.

System.Exception

Errors in arithmetic or conversion operation will be thrown in this exception.

System.ArithmeticException

When an overflow occurs in a checked operation, it will be thrown in _______.

System.OverflowException

Any invalid argument in a method will be thrown in this exception.

System.ArgumentException

If there is an unacceptable argument passed to a method, it will be thrown in _______.

System.ArgumentNullException

Throw in this exception when attempting to index an array through an index that is either less than zero or greater than the maximum length of index.

System.IndexOutOfRangeException

If the available memory becomes too low to accommodate a memory allocation request, it will be thrown in ________.

System.OutOfMemoryException

The exception _______ is called when the execution stack is exhausted by having too many pending method calls.

System.StackOverflowException

This exception checks the format of the string or argument if it is invalid.

System.FormatException

This keyword is used to check for the occurrence of any exceptions enclosed to it.

try

This keyword catches the exception that is thrown on the occurrence of exception in a try block.

catch

It is used to throw an exception manually.

throw

This keyword executes a given statement even if the exception is thrown or not thrown. This block cannot transfer control by using break, continue, return, or goto.

finally

Manually throwing using the throw keyword can also be used. The syntax is?

throw new exception_Object;

The ______ is an instance of a class derived from the Exception class.

exception_Object

In creating an instance of Exception_object, what keyword is used?

new

try{ int num1, num2; num1 = 0; num2 = 55 / y; Console.Write("Answer: " + x); } catch(ArithmeticException ex) { Console.Write(" B "); } finally { Console.Write(" C "); } Which of the following outputs is correct based on the given code?

B C

What will be the output of the code below? try{ Console.WriteLine("Exception:" + " " + 25 / Convert.ToInt32()); } catch(ArithmeticException ex) { Console.WriteLine("Divide By Zero Error"); }

Divide By Zero Error

What keyword is used to re-throw an exception?

throw

Which of the following outputs is correct based on the given code? try { int[] arr = {1, 2, 3, 4, 5}; for(int i = 0; i < 5; i++){ Console.WriteLine(arr[i]); } } catch(IndexOutOfRangeException ie) { Console.WriteLine("Index Out Of Range Exception"); } catch(ArithmeticException ae){ Console.WriteLine("Arithmetic Exception"); } Console.ReadLine();

1 2 3 4 5

Which of the following outputs of the code will show? try { int[] numArr = {15, 22, 143, 54, 85}; for(int i = 0; i < 6; i++){ Console.Write(numArr[i] + ", "); } } catch(IndexOutOfRangeException ex){ Console.Write("Index Out Of Range!"); } Console.ReadLine();

15, 22, 143, 54, 85, Index Out Of Range!

What is the syntax of creating a custom exception?

public class CustomizeException: Exception{ }

This is a class in C#.net that can be found in the System.Threading namespace. It is used to create and control threads in a system or application, in which the properties and methods are already provided.

Thread

Which statement is NOT TRUE for Thread?

These are always generated by Common Language Runtime (CLR).

When using the Thread class, the first thread to be performed in a process is known as the _______?

Main Thread

The other threads that are made using the Thread class are known as the _____ of the main thread.

Child Thread

Which is the correct syntax for creating a Main thread?

Thread basicThread = Thread.CurrentThread; basicThread.Name = "Basic C# Thread"; Console.WriteLine("Current Thread: {0}", basicThread.Name);

Creating a child thread for the main thread should write or create a delegate object, passing a callback method to it as a parameter.

True

In Child Thread, When the thread object is created, the delegate will be used to initialize the thread object.

True

In Child Thread, To define a callback method in the delegate, use ThreadStart to execute the code when the thread started.

True

In Child Thread, A ThreadStart delegate represents a method that runs in the Thread class.

True

Running on: Primary Thread Running on: Worker Thread

A thread is created within the Common Language Runtime (CLR) but has not started.

Unstarted

A thread is ready to run and is waiting for the CPU time.

Ready

A thread is in this mode after invoking its Start method

Running

A running thread is suspended temporarily by invoking either this method or the monitor’s Wait method.

WaitSleepJoin

A suspended thread resumes to this state when the conditions for which is it was suspended are no longer valid.

Started

A thread is blocked when it is waiting for a resource or I/O operations.

Blocked

A thread has finished its task.

Stopped

It returns the current thread that is running.

CurrentThread

It returns a Boolean value indicating the execution status of the recent thread.

IsAlive

It is used to get or set a value that indicates whether the thread is a background thread or not.

IsBackground

It is used to get or set the name of the thread

Name

It is used to get or set a value that represents the priority of a thread.

Priority

It is used to get the value that contains the states of the recent thread

ThreadState

It terminates the thread when calling this method and raises ThreadAbortException in the thread

public void Abort()

It interrupts the thread that is in the state of WaitSleepJoin

public void Interrupt()

It is used to stop the calling thread until a thread terminates.

public void Join()

It is used to withdraw an abort request for the ongoing thread.

public static void ResetAbort()

It is used to start a thread.

public void Start()

It is used to pause a thread for the stated number in milliseconds

public static void Sleep()

When The two (2) child threads are gotten from the same resource simultaneously for manipulation, which is known as ______

Race condition

It is a common feature that allows your application to have more than (1) execution path at the same time.

Multithreading

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