Threads Project

What is the main reason for having threads in many applications?

• To make the programming model more complex

• To allow for multiple activities to run in quasi-parallel

• To slow down the application

• To increase the number of interrupts and context switches

Why are threads considered lighter weight than processes?

• Because they do not allow for parallelism

• Because they are not suitable for systems with multiple CPUs

• Because they are slower to create and destroy

• Because they share an address space and data among themselves

In what scenario do threads yield no performance gain?

• When threads are not sharing an address space

• When all threads are CPU bound

• When there is substantial computing and substantial I/O

• When there is only one thread in the process

Why are threads useful on systems with multiple CPUs?

• Because they increase the number of context switches

• Because they allow for real parallelism

• Because they are heavier than processes

• Because they slow down the system

What is the advantage of having multiple threads in a word processor?

• To slow down the reformatting process

• To make the program single-threaded

• To allow for background reformatting while interacting with the user

• To increase the number of processes

How does multithreading provide the illusion of parallelism?

• By blocking all threads except one

• By switching back and forth among multiple threads rapidly

• By running threads on separate CPUs

• By running threads sequentially

What is a characteristic of threads in a process regarding memory access?

• Threads share the same global variables and address space

• Threads cannot access the same memory address

• Threads have separate open files and child processes

• Each thread has its own memory space

What is the state of a thread that is waiting for some event to unblock it?

• Ready

• Blocked

• Terminated

• Running

What is the purpose of a thread's stack?

• To manage the thread's attributes

• To contain the execution history

• To hold the current working variables

• To store the program counter

What would be a humorous reason for a computer program to use threads?

• To tie itself into knots

• To multitask better

• To improve memory usage

• To increase processing power