Question 1

Multicore systems present certain challenges for multithreaded programming. Briefly describe these challenges.

Accepted Answer

Multicore systems have placed more press...

Question 2

The default signal handler can be overridden by a user-defined signal handler.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is a synchronous signal?

Accepted Answer

A)   illegal memory access
B)   terminating a process with specific keystrokes
C)   having a timer expire
D)   none of the aboveE) B) and C)
F) All of the above

Question 4

In Pthreads, a parent uses the pthread_join()  function to wait for its child thread to complete. What is the equivalent function in Win32?

Accepted Answer

A)   win32_join() 
B)   wait() 
C)   WaitForSingleObject() 
D)   join() E) A) and B)
F) B) and D)

Question 5

To associate each thread created using an implicit technique such as a thread pool, with its unique transaction identifier, we could use ____?

Accepted Answer

A)   global variable
B)   local variable
C)   static data
D)   thread-local storageE) B) and C)
F) A) and B)

Question 6

OpenMP only works for C, C++, and Fortran programs.

Accepted Answer

A) True 
 B)False

Question 7

In Java, data shared between threads is simply declared globally.

Accepted Answer

A) True 
 B)False

Question 8

The _____ model maps each user-level thread to one kernel thread.

Accepted Answer

A)   many-to-many
B)   two-level
C)   one-to-one
D)   many-to-oneE) A) and B)
F) A) and C)

Question 9

Describe two techniques for creating Thread objects in Java.

Accepted Answer

One approach is to create a new class th...

Question 10

Parallelism can be achieved on single-processor systems.

Accepted Answer

A) True 
 B)False

Question 11

Deferred cancellation is preferred over asynchronous cancellation.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following cancellation modes are supported by Pthreads?

Accepted Answer

A)   off mode
B)   deferred mode
C)   asynchronous mode
D)   all of the aboveE) B) and C)
F) B) and D)

Question 13

List the four major categories of the benefits of multithreaded programming. Briefly explain each.

Accepted Answer

The benefits of multithreaded programmin...

Question 14

In multithreaded programs, the kernel informs an application about certain events using a procedure known as a(n)  ____.

Accepted Answer

A)   signal
B)   upcall
C)   event handler
D)   poolE) A) and B)
F) A) and C)

Question 15

Virtually all contemporary operating systems support kernel threads.

Accepted Answer

A) True 
 B)False

Question 16

How can deferred cancellation ensure that thread termination occurs in an orderly manner as compared to asynchronous cancellation?

Accepted Answer

In asynchronous cancellation, the thread...

Question 17

Which of the following is an asynchronous signal?

Accepted Answer

A)   illegal memory access
B)   division by zero
C)   terminating a process with specific keystrokes
D)   none of the aboveE) A) and D)
F) B) and C)

Question 18

Grand Central Dispatch requires multiple threads.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following options exist to deliver signals in multithreaded program?

Accepted Answer

A)   deliver the signal to the thread to which the signal applies
B)   deliver the signal to every thread in the process
C)   deliver the signal to certain threads in the process
D)   assign a specific thread to receive all signals for the process
E)   all of the aboveF) B) and E)
G) B) and C)

Question 20

LWP is ____.

Accepted Answer

A)   short for lightweight processor
B)   placed between system and kernel threads
C)   placed between user and kernel threads
D)   common in systems implementing one-to-one multithreading modelsE) None of the above
F) All of the above

Exam 4: Threads Concurrency

How can deferred cancellation ensure that thread termination occurs in an orderly manner as compared to asynchronous cancellation?

Correct AnswerverifiedIn asynchronous cancellation, the thread...View AnswerShow Answer

List the four major categories of the benefits of multithreaded programming. Briefly explain each.

Correct AnswerverifiedThe benefits of multithreaded programmin...View AnswerShow Answer

Deferred cancellation is preferred over asynchronous cancellation.

Correct AnswerverifiedShow Answer

In Pthreads, a parent uses the pthread_join() function to wait for its child thread to complete. What is the equivalent function in Win32?

Correct AnswerverifiedShow Answer

Multicore systems present certain challenges for multithreaded programming. Briefly describe these challenges.

Correct AnswerverifiedMulticore systems have placed more press...View AnswerShow Answer

Grand Central Dispatch requires multiple threads.

Correct AnswerverifiedShow Answer

The _____ model maps each user-level thread to one kernel thread.

Correct AnswerverifiedShow Answer

Which of the following is a synchronous signal?

Correct AnswerverifiedShow Answer

In multithreaded programs, the kernel informs an application about certain events using a procedure known as a(n) ____.

Correct AnswerverifiedShow Answer

LWP is ____.

Correct AnswerverifiedShow Answer

Which of the following options exist to deliver signals in multithreaded program?

Correct AnswerverifiedShow Answer

Virtually all contemporary operating systems support kernel threads.

Correct AnswerverifiedShow Answer

Which of the following cancellation modes are supported by Pthreads?

Correct AnswerverifiedShow Answer

Which of the following is an asynchronous signal?

Correct AnswerverifiedShow Answer

To associate each thread created using an implicit technique such as a thread pool, with its unique transaction identifier, we could use ____?

Correct AnswerverifiedShow Answer

Parallelism can be achieved on single-processor systems.

Correct AnswerverifiedShow Answer

In Java, data shared between threads is simply declared globally.

Correct AnswerverifiedShow Answer

The default signal handler can be overridden by a user-defined signal handler.

Correct AnswerverifiedShow Answer

OpenMP only works for C, C++, and Fortran programs.

Correct AnswerverifiedShow Answer

Describe two techniques for creating Thread objects in Java.

Correct AnswerverifiedOne approach is to create a new class th...View AnswerShow Answer

Correct Answer
verified
In asynchronous cancellation, the thread...
View Answer

Correct Answer
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The benefits of multithreaded programmin...
View Answer

Correct Answer
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Correct Answer
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Multicore systems have placed more press...
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One approach is to create a new class th...
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