COE 628 Midterm: COE628 - Fall 2012 Midterm

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This is a closed book exam. Textbooks, notes, laptops, calculators, personal digital assistants, cell phones, and internet access are not allowed. It is a 120 minute exam, with a total of 100 marks. Please read each question carefully, and write your answers legibly in the space provided. You may do the questions in any order you wish, but please. When you are finished, please hand in your exam paper and sign out. Student name: _________________________________________ Student id: _________________________________________ Score: _____ : most modern operating systems provide support for both processes and threads. It is an active but relatively heavyweight entity, often with many attributes and resources associated with it. A thread is a flow of control within a process. It is an active but relatively lightweight entity. Concurrently executing processes may require access to shared data. More than one processor is available, so load-balancing is an issue. Difficult to debug of non- deterministic execution sequences.