1) Two internal registers a) Memory address register (MAR) & Memory buffer register (MBR) b) Internal address register (IAR) & Internal buffer register (IBR) c) Process address register (PAR) & Process buffer register (PBR) 2) Main Memory is a) Volatile/Secondary Memory b) Non-Volatile/Primary Memory c) Volatile/Primary Memory d) Non-Volatile/Secondary Memory 3) Which is not a CPU component? a) PC b) I/O AR c) I/O BR d) I/O Module 4) Which is not a stage in Instruction Cycle a) FETCH b) COMPILE c) EXECUTE d) Interrupt 5) Odd man out in the listed classes of interrupts! a) Timer b) Program c) Process d) I/O e) Hardware Failure 6) Find the false statement about Memory Hierarchy a) Faster access time, greater cost per bit b) Greater capacity, slower access speed c) Greater capacity, smaller cost per bit d) Slower access time, smaller cost per bit 7) Which is wrong going down the memory hierarchy a) Decreasing cost per bit b) Increasing capacity c) Increasing access time d) Decreasing access time 8) Which one of the following is not a characteristic of Secondary Memory? a) Auxiliary memory b) External c) Nonvolatile d) Volatile e) Used to store program and data files 9) Cache memory a) lies before Main Memory and CPU b) lies before CPU and Main Memory c) lies between CPU and Main Memory 10) No interrupts occur in a) Interrupt driven I/O b) DMA c) Programmed I/O 11) Computer Which one of the following is not a System Component a) Hardware b) Operating system c) Applications programs d) Users e) None of the above 12) Several jobs are kept in main memory at the same time, and the CPU is multiplexed among them is called as a) Multiprocessor Systems b) Multicore Systems c) Multiprogrammed Batch Systems d) Parallel Systems e) Time-Sharing Systems–Interactive Computing 13) CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory). a) Multicore Systems b) Multiprogrammed Batch Systems c) Parallel Systems d) Time-Sharing Systems–Interactive Computing 14) Multiprocessor systems with more than one CPU in close communication are called as a) Parallel Systems b) Multiprogrammed Batch Systems c) Time-Sharing Systems d) Multicore Systems 15) Which one of the following is not related to Parallel Systems a) Tightly coupled system b) Symmetric multiprocessing (SMP) c) Asymmetric multiprocessing d) Loosely coupled system 16) Distributed Distributed Systems are a) Tightly coupled system b) Multiprocessing Systems c) Parallel Systems d) Loosely coupled system 17) ----------------------- allows two or more systems to share storage. a) Clustered Systems b) Parallel Systems c) Time-Sharing Systems d) Multicore Systems 18) Base register and Limit register is meant for a) Memory Allocation b) Storage c) Memory Protection 19) Dual mode operations include a) user mode and OS mode b) kernel mode and system mode c) user mode and kernel mode 20) ---------- is a software-generated interrupt caused either by an error or a user request. a) Fault b) Error c) Interrupt d) Trap

OPERATING SYSTEM OVERVIEW

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