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CS250 Mid Term 2 Exam Questions and Complete Solutions Graded A+
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CS250 Mid Term 2Exam Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, In the von Neumann architecture, when the CPU is called upon to execute a program, the program's
code will already reside in the computer's memory. - Answer: True
In general, any function not supported by in hardware by the ALU cannot be realized later, using system
software running on top of the hardware platform. - Answer: False
An m-bit CPU means that the computer architecture has m-bit registers, a m-bit address bus, or a m-bit
data bus or perhaps ALL three are m-bit. - Answer: True
Transmits a value read from (or to be written to) memory - Answer: Data Bus
Selects the memory address that the CPU wishes to access - Answer: Address Bus
Manages the operations happening over the other two buses - Answer: Control Bus
Memory mapped I/O emulates a device by making it appear to the CPU as a regular linear memory
segment - Answer: True
Reduced energy requirements translate into higher power consumption and lower heat generation. -
Answer: False
The key takeaway in Dennard's scaling is that the power consumption stays the same with twice the
number of transistors with every technology generation (at least up until we started to have increased
static power losses.) - Answer: True
The Harvard architecture needs two separate memory buses: one for instruction and one for data. -
Answer: True
An abstraction describes what a module does, while an implementation describes how the module does
it. - Answer: True
Developers must always pay attention to a module's implementation. - Answer: False
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