Threads

What is a thread?

• A type of sewing equipment 

• A flow of execution of a program with its own program counter and stack

• A type of internet connection 

• A form of communication between processes 

What are the advantages of User Level Threads (ULT)? 

• They necessitate alterations to the operating system. 

• They provide intricate management processes. 

• ULT are compatible with any operating system.

• ULT prioritize security over speed. 

Which application(s) is an example of a multithreaded application? 

• Image editing software 

• Video rendering software 

• Text editor 

• System backup software 

Which multithreading model maps many user-level threads to one kernel thread? 

• Many to one 

• One to one 

• Many to many 

• Many to all 

What's a problem with the "many to one" multithreading model? 

• It can't achieve true parallelism 

• It requires extensive modification of the operating system 

• It's challenging to manage user-level threads

• It lacks compatibility with multiprocessor systems 

What is a potential drawback of using threads? 

• Slower context switching compared to processes 

• Inability to share common data among threads 

• Blocking of parent threads stopping all child threads 

• Higher cost associated with thread creation and context switching 

What is a thread often referred to as? 

• Heavy-weight process 

• Lightweight process 

• Kernel entity 

• Process segment 

What is a key difference between ULT and KLT? 

• ULT require changes to the operating system, while KLT do not.

• ULT can only run on specific operating systems, while KLT are universal 

• ULT are managed by the kernel, while KLT are managed by user-level libraries

• ULT are slower to create and manage compared to KLT 

What advantage does multithreading offer in specific situations? 

• Multithreading requires less memory overhead 

• Multithreading ensures better security 

• Multithreading allows achieving parallelism and concurrency 

• Multithreading simplifies debugging and maintenance 

Which statement best describes the relationship between threads and processes?

• Processes consist of threads, each executing independently 

• Threads are separate processes that share memory and resources 

• Processes and threads are interchangeable terms 

• Threads are subsets of processes, sharing some resources but executing independently