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COP 3402 Final Exam Questions and Answers
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COP 3402 Final Exam Questions and Answers
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COP 3402 Final Exam Questions andAnswers
software, hardware, external - Answer-types of interrupts
traps, system calls - Answer-software interrupts
i/o interrupt - Answer-hardware interrupts
timer - Answer-external interrupts
trap - Answer-type of interrupt where if there is overflow, memory addressing violation,
and use of privileged instruction in user mode, handler will abort program
i/o - Answer-type of interrupt when device sends signal to inform CPU that I/O operation
has been completed, when it occurs the program state of the running program saved
program state word (PSW) - Answer-structure that gives information about state of
program
PC, MODE, interrupt flags, mask - Answer-what is in PSW register
process control block (PCB) - Answer-activity of process is controlled by this data
structure, is created every time program is loaded to be executed
pointer to next PCB, process ID, base and limit code, PC, stack pointer, registers, state,
mode, interrupt flags - Answer-structure of PCB
thread control block (TCB) - Answer-represents thread known as unit of execution
PC, stack pointer, contents of registers, state - Answer-structure of TCB
process - Answer-program in execution, asynchronous activity, locus of control of a
procedure in execution, manifested by PCB
new, ready, running, waiting, abend, end, suspended - Answer-process states
new - Answer-newly created process, not in ready queue
ready - Answer-it can use CPU if available
running - Answer-if it is currently in CPU
waiting - Answer-waiting for some event
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