Visual Programming MCQs with Answers
Practice important Visual Programming MCQs with answers and explanations.
Multiple Choice Questions
Q591: In the provided RSS reader example, what does UpdatesSourceTrigger=PropertyChanged do?
- A: It updates the data source whenever the property value changes
- B: It refreshes the target element whenever the source updates
- C: It synchronizes the data between the source and target elements
- D: It sets the trigger for property changes in the data source
View Answer
A
Q592: What is a key feature of HierarchicalDataTemplate compared to DataTemplate?
- A: It supports specifying child elements and their templates
- B: It only applies to the root node of the data hierarchy
- C: It is used for defining single-level data templates
- D: It does not support hierarchical data structures
View Answer
A
Q593: How is ObjectDataProvider instantiated when you need to bind to a .NET object?
- A: By setting ObjectInstance property to the existing object or ObjectType for a new object
- B: By creating a new instance of the object directly in XAML
- C: By using a constructor with parameters in the ObjectDataProvider
- D: By binding directly to the object’s properties
View Answer
A
Q594: How do you use Binding.Mode to create a two-way binding?
- A: Set Binding.Mode to TwoWay to ensure changes are reflected in both the source and target elements
- B: Set Binding.Mode to OneWay to only update the target from the source
- C: Set Binding.Mode to OneWayToSource to update the source from the target
- D: Set Binding.Mode to OneTime for a snapshot of the source data
View Answer
A
Q595: What does concurrency refer to in programming?
- A: Running multiple threads simultaneously
- B: Running a single thread multiple times
- C: Executing processes in parallel
- D: Executing code asynchronously
View Answer
A
Q596: How does time slicing affect thread execution?
- A: It allows multiple threads to share CPU time by switching between them
- B: It ensures that each thread runs to completion before switching
- C: It provides each thread with exclusive access to CPU time
- D: It causes threads to run in a fixed sequence
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A
Q597: In the provided ThreadTest class, what does Thread.Join() do?
- A: It blocks the calling thread until the thread represented by t has completed its execution
- B: It starts the execution of the thread represented by t
- C: It stops the thread represented by t from executing
- D: It allows the calling thread to execute concurrently with t
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A
Q598: What is the purpose of the Thread.Sleep() method in multithreading?
- A: It pauses the execution of the current thread for a specified duration
- B: It terminates the current thread after a specified duration
- C: It resumes the execution of the thread after a pause
- D: It synchronizes the execution of multiple threads
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A
Q599: What is the role of ThreadStart delegate in threading?
- A: It defines a method that will be executed when the thread is started
- B: It creates a new thread that can be started and managed
- C: It pauses the thread until a signal is received
- D: It initializes the thread’s priority level
View Answer
A
Q600: In the provided ThreadSafe class, why is a lock used in the Go method?
- A: To ensure that only one thread can execute the critical section of code at a time
- B: To stop the execution of the thread if a condition is met
- C: To prevent the thread from being pre-empted by the CPU
- D: To change the priority of the thread during execution
View Answer
A