Thread

Question 1

Most modern applications

Answer 1

are multithreaded

Question 2

Threads run

Answer 2

within application

Question 3

Multiple tasks with the application can be implemented by separate threads

Answer 3

Update display
Fetch data
Spell checking
Answer a network request

Question 4

Process creation is heavy-weight

Answer 4

while thread creation is light-weight

Question 5

Kernels are generally

Answer 5

multithreaded

Question 6

Benefits of thread

Answer 6

Responsiveness,
Resource Sharing
Economy
Scalability

Question 7

Responsiveness

Answer 7

may allow continued execution if part of the process is blocked, especially important for user interfaces

Question 8

Resource Sharing

Answer 8

threads share resources of process, easier than shared memory or message passing

Question 9

Economy

Answer 9

cheaper than process creation, thread switching lower overhead than context switching

Question 10

Scalability

Answer 10

the process can take advantage of multiprocessor architectures

Question 11

Multi core or multiprocessor systems putting pressure on programmers, challenges include:

Answer 11

Dividing activities
Balance
Data splitting
Data dependency
Testing and debugging

Question 12

Parallelism

Answer 12

implies a system can perform more than one task simultaneously

Question 13

Concurrency

Answer 13

supports more than one task making progress

Question 14

Types of parallelism

Answer 14

Data parallelism

Task parallelism

Question 15

Data parallelism

Answer 15

distributes subsets of the same data across multiple cores, same operation on each

Question 16

Task parallelism

Answer 16

distributing threads across cores, each thread performing a unique operation