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COP 4600 - Final Exam Questions and Answers (Latest Update 2024) Verified Answers
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COP 4600 - Final Exam Questions and Answers (Latest Update 2024) Verified Answers
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COP 4600 - Final Exam Questions andAnswers (Latest Update 2024) Verified
Answers
What must I/O devices be connected to in order to do
anything? - Correct Answer ✅A computer
What is a port? - Correct Answer ✅A set of wires that
connects an I/O device and the computer.
A device that allows other devices to hook up to it in turn is
said to support what? - Correct Answer ✅Daisy-chained
devices
What is a bus? - Correct Answer ✅A common set fo wires
used by more than one I/O device
If devices connect to ports, what do ports connect to? -
Correct Answer ✅Buses
What is a controller? - Correct Answer ✅The electronics
that manage a port, bus or I/O device
,COP 4600 - Final Exam Questions and
Answers (Latest Update 2024) Verified
Answers
What does the operating system actually talk to? - Correct
Answer ✅The device's controller
What is a data in register? - Correct Answer ✅Allows the
computer to get input from the device
What is a data out register? - Correct Answer ✅Allows the
computer to send output to the device
What is a status register? - Correct Answer ✅Indicates the
current state of the device, including whether the current
command has completed, whether the data registers are
ready, and whether there is an error.
What is a control register? - Correct Answer ✅A register
that is used to send commands to the device
What does the interrupt/trap mechanism handle? - Correct
Answer ✅User-process calls for I/O, and notifications for
those calls. Notifications from hardware about I/O completion,
, COP 4600 - Final Exam Questions and
Answers (Latest Update 2024) Verified
Answers
memory exceptions, arithmetic exceptions (divide by zero),
and privilege exceptions.
What is required in order for direct memory access to work? -
Correct Answer ✅Device controllers must be given their
own channel to system memory, with its own control
registers.
What is a device driver? - Correct Answer ✅A piece of
software intended to handle interfacing with a particular
device's controller.
What are some I/O device characteristics? - Correct Answer
✅Stream versus block, sequential versus random,
synchronous versus asynchronous, sharable versus
dedicated, read/write versus read-only write-only, speed of
operation.
What are the fundamental functions of block devices? -
Correct Answer ✅Read, write, and seek.
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