Which of the following statements is False O Operating system is interrupt driven O /0 Devices and CPU cannot execute concurrently O A trap is a software-generated interrupt O v0 is from the device to local buffer of controller
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- When dealing with multiple devices interrupts, which mechanism is easy to implement?a) Polling methodb) Vectored interruptsc) Interrupt nestingd) None of the mentionedWhich processor status flags are displayed by the DumpRegs procedure?Which of the following IO interface data transmission control methods must be initiated by the peripheral? A Interrupt B polling C DMA D Delay
- Which of the following instructions should be allowed only in kernel mode? Disable all interrupts Read the time-of-day clock Set the time-of-day clock Change the memory map Describe two fundamental mechanisms that an application programmer can employ to guarantee accurate process synchronization when handling shared data. (answer all)6. The method of accessing the I/O devices by repeatedly checking the status flags is a. Program-controlled I/O b. Memory-mapped I/O c. I/O mapped d. None of the aboveAssume there is a PCI buffer that is used for data transfers between primary memory and a webcam. The memory transfers 15 frames where each frame is 1M byte in size and the buffer size is 1K byte. 1-How many data transfers will be required? 2-A transfer operation requires 2 interrupts. Start and stop. How many interrupts will occur for the data transfer? 3-What are the two commands that will be issued by the supervisor for each interrupt?
- Which of the following does the external device issue to the processor when it completes an I/O operation? Select the correct answer of ABCD:A. Interrupt signalB. Busy signalC. Ready signalD. Control signaWhich one of the following is the highest priority interrupt? polling signalling NMI INTRWhich of the following is NOT contained in the process control block of a process? answer a)Process registers b)Process interrupt service routine code c)Process stack d)Process file pointers
- The determination to make a context switch is based on which of the following? (Select all that apply.) illegal operation system call timer rebootDraw a flowchart for how page fault handling is achieved in a typical operating system. When drawing your flowchart, make sure you use the proper flowchart symbols (circle for begin and end process, rectangle for a task, diamond for a decision, etc.). Write up a 200 word summary of your research that outlines the purpose for page fault handling and how this is used in a memory management system.LDR uses an address called a "Register Offset" address. Why? Group of answer choices The data value loaded is at an address in the memory. The data value loaded is the results of adding a register and immediate to obtain the reference for the data value Memory is accessed at a location that is a numeric value, starting at (offset from) 0 The ALU can only use register (not memory) values All data access is relative to a memory address or 0. The LDR command uses what units in the CPU? Select all that apply. Group of answer choices Data Memory Multiplication Unit Barrel shifter ALU Addition is done in what CPU unit? Group of answer choices The multiplication unit The registers The ALU The barrel shifter