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Exam (elaborations)

CMSC 421 Exam 1 (All Accurately Solved)

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difference between protection and security correct answers Protection keeps the system from killing itself. Security keeps other things from killing the system what two things does the OS do correct answers resource allocator (manages resources) and a control program (handles errors) what is the kernal correct answers The operating system component running on the computer at all times after system boot. what are the two types of programs correct answers system programs, which are associated with the operating system but are not necessarily part of the kernel application programs, which include all programs not associated with the operation of the system describe middleware correct answers Middleware is a set of software frameworks that provide additional services to application developers. T/F: The operating system kernel consists of all system and application programs in a computer correct answers FALSE T/F All computer systems have some sort of user interaction correct answers FALSE What is a bus? correct answers A communication system; e.g., within a computer, a bus connects various components, such as the CPU and I/O devices, allowing them to transfer data and commands. what is the most common secondary storage device correct answers Magnetic Disk. difference between Flash memory and DRAM correct answers Flash memory is slower than DRAM but needs no power to retain its contents. what can trigger interrupts correct answers hardware or software Which of the following would lead you to believe that a given system is an SMP-type system? correct answers Each processor performs all tasks within the operating system. describe a clustered system correct answers A clustered system gathers together multiple CPUs to accomplish computational work T/F: A dual-core system requires each core has its own cache memory. correct answers FALSE Monolithic correct answers The OS does stuff by itself. All the light touches is monolithic

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CMSC 421
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