Computer Science Questions
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The main bus in the IBM PC computer are: *0/1PCI (Peripheral Component Interconnect)ISA and PCINone of the other choicesISA (Industry Standard Architecture)
Which of the following statements about the CMOS is incorrect? *1/1Is volatileTo contain BIOSTo hold the configuration parametersTo hold the current time and date
Which of the following instructions should be allowed in user mode? *1/1Read the time-of-day clock Set the time-of-day clockDisable all interruptsChange the memory map
An operating system *1/1Manages software resources in a computer systemDeals with complex hardware resources and provides the user a virtual/extended machine that is much easier to deal with than the physical machineManages hardware resources in a computer systemAll of the other choices
What part of the boot process determines whether the peripheral devices are working properly? *1/1ROMPOSTCMOSBIOS
Which of the following instructions should be allowed only in kernel mode? *1/1All of the other choicesChange the memory mapSet the time-of-day clockDisable all interrupts
VMware Workstation is: *1/1Type 2 Hypervisor Host Operating systemType 1 HypervisorGuest Operating system
Which of special register contains the condition code bits, the CPU priority, the mode bit and other control bits)? *1/1None of the other choicesProgram Counter (PC)Instruction Register (IR)Program Status Word (PSW)
Which of the following is correct about advantages of layered system? *1/1None of the other choicesEasier to debug from lower to upper layerEasier to extend and Easier to debug from lower to upper layerEasier to extend
Which of the following is not a operating mode of CPU *1/1Kernel modeUser modeManagement modeNone of the other choices
As one proceeds down the memory hierarchy (from inboard memory to offline storage), the following conditions apply: *1/1Increasing capacityDecreasing cost per bitAll of the other choices Increasing access time
Where is the position of the operating system in computer system: 1/1Above the hardware and under the user interface programBetween the user interface program and the application ProgramIn user spaceNone of the other choices
Examples of general purpose stored program computers include the following except *0/1Personal computersNetwork serversWorkstations MP3 player
Which is not an example of a resource that is commonly space-multiplexed? *0/1Video RAMMain memoryCPUHard drive
Which of the main bus in the IBM PC computer that can run at 66 MHz and transfer 8 bytes at a time? *1/1PCI (Peripheral Component Interconnect)ISA (Industry Standard Architecture)None of the other choicesISA and PCI
Which of the following instructions should be allowed only in kernel mode? *1/1ADD of two numbersAND of two numbersDisable all interruptsRead the time-of-day clock
The language of the CPU is known as its *1/1None of the other choicesInstruction setRegister setControl unit set
The four main structural elements of a computer system are: *1/1Processor, Registers, I/O Modules, Main MemoryNone of the other choicesProcessor, Registers, Main Memory, System BusProcessor, Main Memory, I/O Modules, System Bus
Which of special register in the CPU points to the top of the current stack in the memory? *PCPSWIRSP
The major operating system services provide mechanisms for secure and efficient are: *1/1Communication between processesAll of the other choicesExecution of a program, I/O operations performed by it, and detecting and reporting errors caused by itFile manipulation