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cisco scor dumps.differences, nor does it require candidates to master every component of the Windows architecture. These requirements cover too much knowledge and are beyond the scope of the SECFND exam. This chapter presents the core concepts of Windows that the reader will want to know. Start with the definitions of processes and threads to get a sense of how applications work.8.2 Processes and Threads begins by introducing certain technical definitions of processes and threads. When you look at the way an application is composed, you will find one or more processes. A process (process) is a program that the system is running. Each process provides the resources needed to execute the program. A process consists of one or more threads, which are the basic unit of time allocated to the process by the operating system. A thread can be executed at any part of an application's runtime, including by another thread. Each process, while starting as a single thread (named primary thread [primary thread]), can also create other threads from any of its own threads. In the case of a calculator application, for example, when the user enters a number to be calculated, the application runs multiple processes, for example, the process that performs the mathematical calculation and the process that displays the answer. The processes can think of the threads as each number that is called when they perform the calculations (results) that the calculator application is about to display. Figure 8-1 shows the approximate relationship between the processes and threads of the calculator application.alumplastic calyx Tsuji. Number emperor user input 5+5Thread one row addition operationProcesses that display the results of calculationsProcesses Generating Calculation Results Calculator Application Thread One Displaying Calculation ResultsFigure 8-1 Closure between processes and threads of a calculator applicationMultiple processes can be grouped together and managed as units called jobobjects, which are used to control the properties of these processes.Calculation Results 10 control the properties of these processes. Because any action performed on a particular task object affects all associated processes, grouping processes (grouping processes) can reduce the impact on these processes. A thread pool is a set of workerthreads that can efficiently perform asynchronous callbacks for an application. o The purpose of using a thread pool is to reduce the number of threads in an application and to manage worker threads. A fiber is an execution unit that is manually scheduled by the application. Threads can schedule multiple fibers, but fibers do not outperform properly designed multithreaded applications in terms of performance.8.2 Processes and threads 341