Cop 4600 exam 2 questions - Study guides, Class notes & Summaries

The term ____________ refers to a technique in which a process can do nothing until it gets permission to enter its critical section but continues to execute an instruction or set of instructions that tests the appropriate variable to gain entrance. - spin (busy) waiting It is possible in a single-processor system to not only interleave the execution of multiple processes but also to overlap them. - False Race condition is a situation in which two or more processes continuously change thei...

COP 4600 VERIFED EXAM (QUESTIONS AND ELABORATED ANSWERS) In a multiprogramming system the main memory is not generally occupied simultaneously by multiple processes. - CORRECT ANSWER-False A hardware mechanism is needed for translating virtual addresses to physical main memory addresses at the time of execution of the instruction that contains the reference. - CORRECT ANSWER-True A physical address is the location of a word relative to the beginning of the program and the processor tr...

Main Memory - ANSWER The only storage that the CPU can directly access. Registers - ANSWER Single words of memory that the CPU can do arithmetic and logic in. Base Register - ANSWER Used to hold the lowest memory address a processor can access. Limit Register - ANSWER Used to hold the size of the range a process can access. Cache - ANSWER A smaller, faster space of memory used to hold memory "closer" to the processor. Stall - ANSWER Accessing main memory requires a __________. ...

COP 4600 EXAM 2 QUESTIONS AND ANSWERS 1. The term refers to a technique in which a process can do nothing until it gets permission to enter its critical section but continues to execute an instruction or set of instructions that tests the appropriate variable to gain entrance.: spin (busy) waiting 2. It is possible in a single-processor system to not only interleave the execu- tion of multiple processes but also to overlap them.: False 3. Race condition is a situation in which two or more...

COP 4600 - FINAL EXAM QUESTIONS AND ANSWERS 1. What must I/O devices be connected to in order to do anything?: A computer 2. What is a port?: A set of wires that connects an I/O device and the computer. 3. A device that allows other devices to hook up to it in turn is said to support what?: Daisy-chained devices 4. What is a bus?: A common set fo wires used by more than one I/O device 5. If devices connect to ports, what do ports connect to?: Buses 6. What is a controller?: The electro...