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- User-level threads versus kernel-level threads—which is superior? What sets user-level threads distinct from kernel-level threads? Is it ever the case that one sort is better than the other?QUESTION 5Which concurrency pattern you should use to implement a high-performance multi-threaded server applications?1.Reactor2.Monitor3.Leader/Followers4.Active Object QUESTION 6Which of the following suggests the use of a Monitor Object pattern?1.When Multiple threads of control accessing the same object concurrently and we want to ensure that only one method at a time runs within an object.2.When we want to decouple method execution from method invocation3.In an event-driven application where multiple service requests arriving on a set of event sources must be processed efficiently by multiple threads that share the event sources.4.When we want to decouple asynchronous and synchronous service processing in concurrent systems, to simplify programming without unduly reducing performance.What exactly are daemon processes, and how significant are they in the grand scheme of things? Please give four specific instances.
- A system provides support for user-level and kernel-level threads. The mapping in this system is one to one (there is a corresponding kernel thread for each user thread). Does a multithreaded process consist of (a) a working set for the entire process or (b) a working set for each thread? Explain.How does thread pooling work, and what are its advantages in a multithreaded application? Provide an example scenario where thread pooling would be beneficial.Is there any possibility for starting managed server during the absence of administrator server?
- Describe why a user thread must be mapped onto an available kernel thread and explain how this mapping is facilitated by an operating system? In other words, briefly describe the interface a kernel provides to enable such a mapping and discuss one of the models for mapping user threads to kernel threads.Those who have come to a standstill due to the detection of deadlocks in their processes are permitted to make resource requests.In certain instances, user-level threads may be preferable than kernel-level threads. How do user-level and kernel-level threads differ? Does one species do better than the others in a particular scenario?