Exam (elaborations)
CSCI 340 Midterm Questions and answers latest update
- Course
- CSCI 340
- Institution
- University Of Illinois - Chicago
CSCI 340 Midterm Questions and answers latest update
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CSCI 340 MidtermHardware ANS✔✔ processors, I/O devices, all types of memory and
secondary storage.
Software ANS✔✔ includes the operating system and the software that uses
it, which is called the application layer.
Layers of Computer System ANS✔✔ User, Application, Operating System,
Hardware Layer all adjacent layers interact with each other
Operating System Services ANS✔✔ Program Execution
I/O Operations - providing I/O services to user and applications
File Systems - creating and mantaining file systems
Communications- allow executing programs to communicate with each other
Error Detection - detecting and handling erros
Protection - choooses who to give access to
Accounting - monitoring performance and utilization
Operating System ANS✔✔ kernel program
System Programs ANS✔✔ come with operating system
Updaters, Compilers, and File Managers
Ex: Commands in directories that you can use in command prompt on
computer
, System Bus ANS✔✔ Communication path that connects major components
of computer system which uses a data bus, address bus, and control bus. The
number of wires is called the width of the bus which is the amount of parallel
wires
Memory Units ANS✔✔ primary storage are volatile and controlled by
memory controller which allows memory to be used by devices that want
access to it
Computer System Operations ANS✔✔ Peripheral Devices and External
Storage can work concurrently with processors
Interrupts ANS✔✔ Signals that inform the OS that an event has occurred
and requires os to figure out which task to do next and temporarily stops or
terminates a service or process
I/O Operation Steps ANS✔✔ -Device driver load registers in device
controller
-Device Controller determines that it is a read operation and what data to read
-Controller starts transfer of data from device to local buffer
-Device controller informs device driver when transfer of data is complete
Interrupt Request (IRQ) ANS✔✔ A communication method that allows a
device to to interrupt the CPU and request processing time.
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