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CSC 301 - Exam 1 (Chapters 1 & 2) Study Guide questions well answered to pass
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CSC 301 - Exam 1 (Chapters 1 & 2) Study Guide questions well answered to pass
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CSC 301 - Exam 1 (Chapters 1 & 2) StudyGuide questions well answered to pass
What is a bootstrap program, and where is it stored? - correct answer ✔✔A bootstrap program is the
initial program that the computer runs
when it is powered up or rebooted. It initializes all aspects of the
system, from CPU registers to device controllers to memory contents.
Typically, it is stored in read-only memory (ROM) or electrically
erasable programmable read-only memory (EEPROM), known by the general
term firmware, within the computer hardware.
Describe why direct memory access (DMA) is considered an efficient mechanism for performing
I/O. - correct answer ✔✔DMA is efficient for moving large amounts of data between I/O
devices and main memory. It is considered efficient because it removes
the CPU from being responsible for transferring data. DMA instructs the
device controller to move data between the devices and main memory.
Describe why multi-core processing is more efficient than placing each processor on its own chip. -
correct answer ✔✔A large reason why it is more efficient is that communication
between processors on the same chip is faster than processors on separate
chips.
Describe the operating system's two modes of operation. - correct answer ✔✔In order to ensure the
proper execution of the operating system,
most computer systems provide hardware support to distinguish between
user mode and kernel mode. A mode bit is added to the hardware of the
computer to indicate the current mode: kernel (0) or user (1). When the
computer system is executing on behalf of a user application, the system
is in user mode. However, when a user application requests a service from
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