System Programming MCQs with Answers
Practice important System Programming MCQs with answers and explanations.
Chapter: 170
Q3781:
The WorkCallback function prototype contains the parameters Instance, Context, and _______.
A. Work
B. Thread
C. Task
D. Callback
Correct Answer:
A
Chapter: 170
Q3782:
The program reports an error and exits if memory allocation for work objects or arguments _______.
A. fails
B. succeeds
C. is delayed
D. is not aligned
Correct Answer:
A
Chapter: 170
Q3783:
In the Worker callback, threadArgs points to _______.
A. struct THARG
B. instance
C. data
D. lock
Correct Answer:
A
Chapter: 171
Q3784:
An alternate and simplistic technique for thread callbacks can omit _______.
A. worker threads
B. callback functions
C. work items
D. work queues
Correct Answer:
C
Chapter: 171
Q3785:
Which API is used to attempt submission of a thread pool callback without requiring work items?
A. TrySubmitThreadPoolCallback
B. CreateThreadpoolWork
C. CreateThreadpoolCallback
D. SubmitThreadpoolWork
Correct Answer:
A
Chapter: 171
Q3786:
The callback function type used in TrySubmitThreadPoolCallback is called _______.
A. PTP_WORK_CALLBACK
B. PTP_SIMPLE_CALLBACK
C. PTP_COMPLEX_CALLBACK
D. PTP_THREAD_CALLBACK
Correct Answer:
B
Chapter: 171
Q3787:
What is the correct signature for a simple callback function in thread pool APIs?
A. VOID CALLBACK SimpleCallback(PTP_CALLBACK_INSTANCE, PVOID)
B. VOID CALLBACK SimpleCallback(PVOID, PTP_CALLBACK_INSTANCE)
C. INT SimpleCallback(PTP_CALLBACK_INSTANCE, PVOID)
D. BOOL SimpleCallback(PTP_CALLBACK_INSTANCE, PVOID)
Correct Answer:
A
Chapter: 171
Q3788:
If work items are not required, which API is preferred for submitting thread pool callbacks?
A. TrySubmitThreadPoolCallback
B. CreateThreadpoolWork
C. SubmitThreadpoolWork
D. QueueUserWorkItem
Correct Answer:
A
Chapter: 171
Q3789:
The function CreateThreadpoolWork requires a callback function of type _______.
A. PTP_SIMPLE_CALLBACK
B. PTP_WORK_CALLBACK
C. PTP_THREAD_CALLBACK
D. PTP_CALLBACK_ENVIRON
Correct Answer:
B
Chapter: 171
Q3790:
In thread pool programming, the callback environment is passed as a parameter of type _______.
A. PTP_WORK
B. PTP_CALLBACK_ENVIRON
C. PTP_SIMPLE_CALLBACK
D. PTP_WORK_CALLBACK
Correct Answer:
B
Chapter: 171
Q3791:
The use of TrySubmitThreadPoolCallback is suitable when threads are _______.
A. Simple and straightforward
B. Complex and dependent
C. CPU-bound
D. IO-bound
Correct Answer:
A
Chapter: 171
Q3792:
In the provided API, the type PTP_SIMPLE_CALLBACK refers to a callback function with parameters _______.
A. (PTP_CALLBACK_INSTANCE, PVOID)
B. (PTP_WORK, PVOID)
C. (PTP_CALLBACK_ENVIRON, PVOID)
D. (PTP_WORK_CALLBACK, PVOID)
Correct Answer:
A
Chapter: 171
Q3793:
Which API function creates a work item to be used with a thread pool?
A. TrySubmitThreadPoolCallback
B. CreateThreadpoolWork
C. SubmitThreadpoolWork
D. WaitForThreadpoolWorkCallbacks
Correct Answer:
B
Chapter: 171
Q3794:
When using TrySubmitThreadPoolCallback, the callback function pointer parameter is named _______.
A. pfnwk
B. pWork
C. pCallback
D. pfnCallback
Correct Answer:
A
Chapter: 171
Q3795:
The parameter "pv" in TrySubmitThreadPoolCallback is used to pass _______.
A. Thread priority
B. Callback context data
C. Thread ID
D. Number of threads
Correct Answer:
B
Chapter: 172
Q3796:
What is a thread pool according to MSDN?
A. A collection of worker threads to efficiently execute asynchronous callbacks
B. A queue of process threads
C. A collection of hardware threads
D. A pool of user interface threads
Correct Answer:
A
Chapter: 172
Q3797:
The main purpose of a thread pool is to
A. Reduce the number of application threads
B. Increase the number of user interface threads
C. Manage memory allocation
D. Control hardware resources
Correct Answer:
A
Chapter: 172
Q3798:
The thread pool helps applications that
A. Perform parallel processing
B. Perform single-threaded operations
C. Use only synchronous callbacks
D. Do not perform any background work
Correct Answer:
A
Chapter: 172
Q3799:
Every process has
A. One dedicated thread pool
B. Multiple thread pools
C. No thread pools
D. Depends on system configuration
Correct Answer:
A
Chapter: 172
Q3800:
When a callback function finishes executing, its thread
A. Becomes free for Windows scheduler
B. Terminates immediately
C. Becomes a user thread
D. Is deleted
Correct Answer:
A