Question 1

In a multithreaded server architecture, which of the following is used to service a new user request?

Accepted Answer

A)  a new created thread 
B)  a new created process 
C)  the same process for prior users 
D)  none of the above 
A)  a new created thread 
B)  a new created process 
C)  the same process for prior users 
D)  none of the above

Question 2

Describe how OpenMP is a form of implicit threading.

Accepted Answer

OpenMP provides a set of compiler direct

Question 3

The most common technique for writing multithreaded Java programs is _____.

Accepted Answer

A)  extending the Thread class and overriding the run() method 
B)  implementing the Runnable interface and defining its run() method 
C)  designing your own Thread class 
D)  using the CreateThread() function 
A)  extending the Thread class and overriding the run() method 
B)  implementing the Runnable interface and defining its run() method 
C)  designing your own Thread class 
D)  using the CreateThread() function

Question 4

When fork() is invoked, it is passed a set of flags that determine how much sharing is to take place between the parent and child tasks.

Accepted Answer

A) True 
 B)False

Question 5

The _____ model multiplexes many user-level threads to a smaller or equal number of kernel threads.

Accepted Answer

A)  many-to-many 
B)  two-level 
C)  one-to-one 
D)  many-to-one 
A)  many-to-many 
B)  two-level 
C)  one-to-one 
D)  many-to-one

Question 6

Which of the following options to deliver signals in multithreaded program should be applied to a synchronous signal?

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 above 
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 above

Question 7

Amdahl's Law describes performance gains for applications with both a serial and parallel component.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following information is shared when the flag CLONE_VM is set up?

Accepted Answer

A)  file-system information 
B)  memory space 
C)  signal handlers 
D)  set of open files 
A)  file-system information 
B)  memory space 
C)  signal handlers 
D)  set of open files

Question 9

Which of the following statements regarding threads is false?

Accepted Answer

A)  Sharing is automatically provided in Java threads. 
B)  Both Pthreads and Win32 threads share global data. 
C)  The start() method actually creates a thread in the Java virtual machine. 
D)  The Java method join() provides similar functionality as the WaitForSingleObject in Win32. 
A)  Sharing is automatically provided in Java threads. 
B)  Both Pthreads and Win32 threads share global data. 
C)  The start() method actually creates a thread in the Java virtual machine. 
D)  The Java method join() provides similar functionality as the WaitForSingleObject in Win32.

Question 10

Which of the following options to deliver signals in multithreaded program should be applied to an asynchronous signal that terminates a process (, for example)?

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 above 
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 above

Question 11

Which of the following cancellation modes is the default cancellation type?

Accepted Answer

A)  off mode 
B)  deferred mode 
C)  asynchronous mode 
D)  all of the above 
A)  off mode 
B)  deferred mode 
C)  asynchronous mode 
D)  all of the above

Question 12

Which of the following Pthread function is used to respond to a cancellation request using deferred cancellation?

Accepted Answer

A)  pthread attr init 
B)  pthread_create 
C)  pthread_join 
D)  pthread_testcancel 
A)  pthread attr init 
B)  pthread_create 
C)  pthread_join 
D)  pthread_testcancel

Question 13

Which of the following implicit threading methodology involves dispatch queues?

Accepted Answer

A)  thread pools 
B)  OpenMP 
C)  grand central dispatch 
D)  all of the above 
A)  thread pools 
B)  OpenMP 
C)  grand central dispatch 
D)  all of the above

Question 14

Describe how Grand Central Dispatch is a form of implicit threading.

Accepted Answer

Grand Central Dispatch (GCD) is a techno

Question 15

Describe the difference between the fork() and clone() Linux system calls.

Accepted Answer

The fork() system call is used to duplic

Question 16

In Java, what two things does calling the start() method for a new Thread object accomplish?

Accepted Answer

Calling the start() method for a new Thr

Question 17

What are the two different ways in which a thread library could be implemented?

Accepted Answer

The first technique of implementing the

Question 18

Which of the following benefits go to multithreaded programming?

Accepted Answer

A)  responsiveness 
B)  resource sharing 
C)  economy 
D)  scalability 
E)  all of the above 
A)  responsiveness 
B)  resource sharing 
C)  economy 
D)  scalability 
E)  all of the above

Question 19

Distinguish between parallelism and concurrency.

Accepted Answer

A parallel system can perform

In a multithreaded server architecture, which of the following is used to service a new user request?

Describe how OpenMP is a form of implicit threading.

The most common technique for writing multithreaded Java programs is _____.

When fork() is invoked, it is passed a set of flags that determine how much sharing is to take place between the parent and child tasks.

The _____ model multiplexes many user-level threads to a smaller or equal number of kernel threads.

Which of the following options to deliver signals in multithreaded program should be applied to a synchronous signal?

Amdahl's Law describes performance gains for applications with both a serial and parallel component.

Which of the following information is shared when the flag CLONE_VM is set up?

Which of the following statements regarding threads is false?

Which of the following options to deliver signals in multithreaded program should be applied to an asynchronous signal that terminates a process (<control><C>, for example)?

Which of the following cancellation modes is the default cancellation type?

Which of the following Pthread function is used to respond to a cancellation request using deferred cancellation?

Which of the following implicit threading methodology involves dispatch queues?

Describe how Grand Central Dispatch is a form of implicit threading.

Describe the difference between the fork() and clone() Linux system calls.

In Java, what two things does calling the start() method for a new Thread object accomplish?

What are the two different ways in which a thread library could be implemented?

Which of the following benefits go to multithreaded programming?

Distinguish between parallelism and concurrency.

Introduction

Operating-System Structures

Processes

Cpu Scheduling

Synchronization Tools

Synchronization Examples

Deadlocks

Main Memory

Virtual Memory

Mass-Storage Structure

Io Systems

File-System Interface

File-System Implementation

File-System Internals

Security

Protection

Filters

Exam 4: Threads Concurrency

In a multithreaded server architecture, which of the following is used to service a new user request?

Describe how OpenMP is a form of implicit threading.

The most common technique for writing multithreaded Java programs is _____.

When fork() is invoked, it is passed a set of flags that determine how much sharing is to take place between the parent and child tasks.

The _____ model multiplexes many user-level threads to a smaller or equal number of kernel threads.

Which of the following options to deliver signals in multithreaded program should be applied to a synchronous signal?

Amdahl's Law describes performance gains for applications with both a serial and parallel component.

Which of the following information is shared when the flag CLONE_VM is set up?

Which of the following statements regarding threads is false?

Which of the following options to deliver signals in multithreaded program should be applied to an asynchronous signal that terminates a process (<control><C>, for example)?

Which of the following cancellation modes is the default cancellation type?

Which of the following Pthread function is used to respond to a cancellation request using deferred cancellation?

Which of the following implicit threading methodology involves dispatch queues?

Describe how Grand Central Dispatch is a form of implicit threading.

Describe the difference between the fork() and clone() Linux system calls.

In Java, what two things does calling the start() method for a new Thread object accomplish?

What are the two different ways in which a thread library could be implemented?

Which of the following benefits go to multithreaded programming?

Distinguish between parallelism and concurrency.

Introduction

Operating-System Structures

Processes

Cpu Scheduling

Synchronization Tools

Synchronization Examples

Deadlocks

Main Memory

Virtual Memory

Mass-Storage Structure

Io Systems

File-System Interface

File-System Implementation

File-System Internals

Security

Protection

Filters