Quiz 3: Multithreading

1. What is true about threads?

• 1. Threads consumes CPU in best possible manner

• 1. Threads enables multi processing.

• 1. Multi threading reduces idle time of CPU

• 1. All

1. A thread can acquire a lock by using which reserved keyword?

• 1. volatile

• 1. synchronized

• 1. locked

• none

1. How many threads can a process contain?

• 1

• 2

• multiple

• none

1. What is sometimes also called a lightweight process?

• 1. Thread

• 1. Process

• JVM

• Method

1. What are valid points about thread

• 1. Thread are subdivision of Process.

• 1. One or more Threads runs in the context of process.

• 1. Threads can execute any part of process. And same part of process can be executed by multiple Threads.

• 1. All

1. What are valid point about processes

• 1. Processes have their own copy of the data segment of the parent process

• 1. Threads have direct access to the data segment of its process

• 1. Processes have their own address

• 1. All of these

1. Which is thread safe?

• 1. StringBuffer

• 1. StringBuilder

• All

• None

1. How can we create Thread?

• 1. By Extending Thread class

• 1. Implementing Runnable interface

• 1. By using Executor framework - which can internally form threads

• All

1. Which of these is not a Thread state?

• 1. New

• 1. Runnable

• 1. sleep

• 1. terminated

1. synchronized instance methods acquire lock on?

• 1. object

• 1. class

• All

• None