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MMLU / Of the following, which best characterizes computers that use memory-mapped I/O?

Problem

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question

Of the following, which best characterizes computers that use memory-mapped I/O?

choices

  1. The computer provides special instructions for manipulating I/O ports.
  2. I/O ports are placed at addresses on the bus and are accessed just like other memory locations.
  3. To perform an I/O operation, it is sufficient to place the data in an address register and call the channel to perform the operation.
  4. Ports are referenced only by memory-mapped instructions of the computer and are located at hardwired memory locations.

subject

college_computer_science

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Source and history

task_id
472cdf83-4d6f-522c-8f62-809c45dafa9f
task_key
all--test--472cdf83-4d6f-522c-8f62-809c45dafa9f
task_revision_id
1
config / split
all / test

Official source

initial import