Question 1

Which of the following items are shared across multiple threads belonging to the same process?

Accepted Answer

A)  code, data, files 
B)  registers 
C)  stack 
D)  all of the above 
A)  code, data, files 
B)  registers 
C)  stack 
D)  all of the above A

Question 2

What are the general components of a thread in Windows?

Accepted Answer

The thread consists of a unique ID, a register set that represents the status of the processor, a user stack for user mode, a kernel stack for kernel mode, and a private storage area used by run-time libraries and dynamic link libraries.

Question 3

Task parallelism distributes threads and data across multiple computing cores.

Accepted Answer

A) True 
 B)False  False

Question 4

The trend in developing parallel applications is to use implicit threading.

Accepted Answer

A) True 
 B)False

Question 5

Which are included in the context of a thread?

Accepted Answer

A)  register set 
B)  stacks 
C)  private storage area 
D)  all of the above 
A)  register set 
B)  stacks 
C)  private storage area 
D)  all of the above

Question 6

Some UNIX systems have two versions of fork(). Describe the function of each version, as well as how to decide which version to use.

Accepted Answer

One version of fork() duplicates all thr

Question 7

Which of the following is a function that can be provided by Pthreads API for constructing a multithreaded program?

Accepted Answer

A)  pthread attr init 
B)  pthread_create 
C)  pthread_join 
D)  all of the above 
A)  pthread attr init 
B)  pthread_create 
C)  pthread_join 
D)  all of the above

Question 8

What is a thread pool and why is it used?

Accepted Answer

A thread pool is a collection of threads

Question 9

Concurrency is inherently equivalent to parallelism.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following refers to the capability to allow multiple tasks make progress on a single processor system?

Accepted Answer

A)  concurrency 
B)  parallelism 
C)  data parallelism 
D)  task parallelism 
A)  concurrency 
B)  parallelism 
C)  data parallelism 
D)  task parallelism

Question 11

_____ is not considered a challenge when designing applications for multicore systems.

Accepted Answer

A)  Deciding which activities can be run in parallel 
B)  Ensuring there is a sufficient number of cores 
C)  Determining if data can be separated so that it is accessed on separate cores 
D)  Identifying data dependencies between tasks. 
A)  Deciding which activities can be run in parallel 
B)  Ensuring there is a sufficient number of cores 
C)  Determining if data can be separated so that it is accessed on separate cores 
D)  Identifying data dependencies between tasks.

Question 12

___________ is a formula that identifies potential performance gains from adding additional computing cores to an application that has a parallel and serial component.

Accepted Answer

A)  Task parallelism 
B)  Data parallelism 
C)  Data splitting 
D)  Amdahl's Law 
A)  Task parallelism 
B)  Data parallelism 
C)  Data splitting 
D)  Amdahl's Law

Question 13

Which of the following is a method for implicit threading?

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

____ is a thread library for Solaris that maps many user-level threads to one kernel thread.

Accepted Answer

A)  Pthreads 
B)  Green threads 
C)  Sthreads 
D)  Java threads 
A)  Pthreads 
B)  Green threads 
C)  Sthreads 
D)  Java threads

Question 15

Thread-local storage is inherently equivalent to local variables.

Accepted Answer

A) True 
 B)False

Question 16

Why should a web server not run as a single-threaded process?

Accepted Answer

For a web server that runs as

Question 17

One-to-one model provides more concurrency than the many-to-one model by allowing another thread to run when a thread makes a blocking system call.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following models are possible for the relationship between the user threads and kernel threads?

Accepted Answer

A)  many-to-one model 
B)  one-to-one model 
C)  many-to-many model 
D)  two-level model 
E)  all of the above 
A)  many-to-one model 
B)  one-to-one model 
C)  many-to-many model 
D)  two-level model 
E)  all of the above

Question 19

The single benefit of a thread pool is to control the number of threads.

Accepted Answer

A) True 
 B)False

Question 20

Signals can be emulated in windows through ____.

Accepted Answer

A)  asynchronous procedure calls 
B)  local procedure calls 
C)  remote procedure calls 
D)  none of the above 
A)  asynchronous procedure calls 
B)  local procedure calls 
C)  remote procedure calls 
D)  none of the above

Which of the following items are shared across multiple threads belonging to the same process?

What are the general components of a thread in Windows?

Task parallelism distributes threads and data across multiple computing cores.

The trend in developing parallel applications is to use implicit threading.

Which are included in the context of a thread?

Some UNIX systems have two versions of fork(). Describe the function of each version, as well as how to decide which version to use.

Which of the following is a function that can be provided by Pthreads API for constructing a multithreaded program?

What is a thread pool and why is it used?

Concurrency is inherently equivalent to parallelism.

Which of the following refers to the capability to allow multiple tasks make progress on a single processor system?

_____ is not considered a challenge when designing applications for multicore systems.

___________ is a formula that identifies potential performance gains from adding additional computing cores to an application that has a parallel and serial component.

Which of the following is a method for implicit threading?

____ is a thread library for Solaris that maps many user-level threads to one kernel thread.

Thread-local storage is inherently equivalent to local variables.

Why should a web server not run as a single-threaded process?

One-to-one model provides more concurrency than the many-to-one model by allowing another thread to run when a thread makes a blocking system call.

Which of the following models are possible for the relationship between the user threads and kernel threads?

The single benefit of a thread pool is to control the number of threads.

Signals can be emulated in windows through ____.

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

Which of the following items are shared across multiple threads belonging to the same process?

What are the general components of a thread in Windows?

Task parallelism distributes threads and data across multiple computing cores.

The trend in developing parallel applications is to use implicit threading.

Which are included in the context of a thread?

Some UNIX systems have two versions of fork(). Describe the function of each version, as well as how to decide which version to use.

Which of the following is a function that can be provided by Pthreads API for constructing a multithreaded program?

What is a thread pool and why is it used?

Concurrency is inherently equivalent to parallelism.

Which of the following refers to the capability to allow multiple tasks make progress on a single processor system?

_____ is not considered a challenge when designing applications for multicore systems.

___________ is a formula that identifies potential performance gains from adding additional computing cores to an application that has a parallel and serial component.

Which of the following is a method for implicit threading?

____ is a thread library for Solaris that maps many user-level threads to one kernel thread.

Thread-local storage is inherently equivalent to local variables.

Why should a web server not run as a single-threaded process?

One-to-one model provides more concurrency than the many-to-one model by allowing another thread to run when a thread makes a blocking system call.

Which of the following models are possible for the relationship between the user threads and kernel threads?

The single benefit of a thread pool is to control the number of threads.

Signals can be emulated in windows through ____.

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