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Threads: User level & Kernel level thread, Threading issues, Operating System, CSE, GATE Video Lecture - Computer Science Engineering (CSE)
FAQs on Threads: User level & Kernel level thread, Threading issues, Operating System, CSE, GATE Video Lecture - Computer Science Engineering (CSE)
| 1. What are user level and kernel level threads? |  |
Ans. User level threads are managed by the user-level thread library without the involvement of the operating system. These threads are created and scheduled by the application itself. Kernel level threads, on the other hand, are managed by the operating system. They are created and scheduled by the kernel and have direct access to the underlying hardware.
| 2. What are some threading issues that can occur in a multi-threaded program? | |
Ans. Some common threading issues include race conditions, deadlock, livelock, and resource starvation. Race conditions occur when multiple threads access and manipulate shared data simultaneously, leading to unpredictable results. Deadlock occurs when two or more threads get stuck waiting for each other to release resources they hold. Livelock happens when threads keep responding to each other's actions without making any progress. Resource starvation occurs when a thread is unable to access the resources it needs due to high demand from other threads.
| 3. How does an operating system manage threads? | |
Ans. The operating system manages threads by providing thread-related system calls and services. It maintains a thread control block (TCB) for each thread, which contains information such as the thread's program counter, register values, and stack pointer. The operating system is responsible for creating, scheduling, and terminating threads. It also handles thread synchronization, resource allocation, and deadlock detection.
| 4. What is the role of threads in computer science engineering (CSE)? | |
Ans. Threads play a crucial role in computer science engineering. They allow for concurrent execution of multiple tasks within a program, enabling efficient utilization of resources and improved performance. Threads are used in various CSE applications, such as parallel processing, web servers, database systems, and real-time systems. Understanding thread concepts and their management is essential for CSE professionals to develop efficient and scalable software solutions.
| 5. How can threads be beneficial in the GATE Computer Science Engineering (CSE) exam? | |
Ans. Understanding threads is important for the GATE CSE exam as it is a commonly tested topic. Questions related to thread management, synchronization, and thread-based algorithms may be asked in the exam. Having a strong grasp of thread concepts and their implementation can help students score well in the operating system and parallel computing sections of the exam. Additionally, knowledge of threads is valuable for future career prospects in software development and system programming.
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