COP4600 FINAL EXAM TEST (QUESTIONS AND ANSWERS) UPDATED

COP4600 FINAL EXAM TEST (QUESTIONS AND ANSWERS) UPDATED port - CORRECT ANSWER-wires that connect an I/O device to computer daisy chain - CORRECT ANSWER-device that allows other devices to hook up to it bus - CORRECT ANSWER-common set of wires used by more than one I/O device controller - CORRECT ANSWER-electronics that manage a port, bus or I/O OS->_____ - CORRECT ANSWER-PCI bus controller PCI bus controller->______ - CORRECT ANSWER-ATA controller ATA controller->______ - CORRECT ANSWER-disk controller data in register - CORRECT ANSWER-get input from device data out register - CORRECT ANSWER-send output to device status register - CORRECT ANSWER-indicates current status of device control register - CORRECT ANSWER-send commands to device device driver - CORRECT ANSWER-software intended to handle interfacing with a particular device's controller virtual file system - CORRECT ANSWER-represent devices as files stream vs block - CORRECT ANSWER-transmit byte by byte, vs in groups sequential vs random - CORRECT ANSWER-seeking not possible, vs seeking possible synchronous vs asynchronous - CORRECT ANSWER-predictable coordinating timing, vs arbitrary timing shareable vs dedicated - CORRECT ANSWER-usable by multiple processes, vs needing a lock block device - CORRECT ANSWER-disks and other types of memory read, write, seek stream device - CORRECT ANSWER-generate linear input/output of data get, put clocks - CORRECT ANSWER-preempt processes, flush cache buffers, report timeouts device status table - CORRECT ANSWER-keep track of each device and related pending requests double buffering - CORRECT ANSWER-switch buffers as they fill useful with slow producer and fast consumer spool - CORRECT ANSWER-special purpose buffer that serves jobs magnetic disks - CORRECT ANSWER-made of series of platters read-write heads float above platters, attached to a disk arm platter->_____ - CORRECT ANSWER-tracks tracks->_____ - CORRECT ANSWER-sectors cylinder - CORRECT ANSWER-collection of tracks at same distance from center transfer rate - CORRECT ANSWER-effective rate of data flow between disk and computer random access time - CORRECT ANSWER-seek time plus rotational latency seek time - CORRECT ANSWER-time taken to move disk arm to right cylinder rotational latency - CORRECT ANSWER-time taken for right sector to rotate to the disk head Solid State Drive - CORRECT ANSWER-use memory controllers far faster random access times ATA for ______ - CORRECT ANSWER-HDD/SDD PCI-Express for _____ - CORRECT ANSWER-high end SSD USB for _____ - CORRECT ANSWER-low end external memory Thunderbolt for _____ - CORRECT ANSWER-high end external memory