pach 6.1

DMA is the abbreviation for:

• Direct Management Access

• Direct Memory Application Access

• Direct Memory Access

• Direct Mainboard Administration

Characteristics of Bus arbitration focus on many levels:

• Peripheral devices are connected to a Bus request line

• Devices connect to the Bus arbitration unit with a single wire

• Each peripheral device has its own Bus request line

• Peripheral devices connected to different Bus request lines

With the program input and output method, which of the following statements is false?

• Peripheral devices are active objects in data exchange

• Peripheral devices are passive objects in data exchange

• When executing a program and encountering input/output commands, the CPU controls data exchange with peripheral devices.

• Use I/O commands in the program to exchange data with the port

What are the important characteristics of an asynchronous bus?

• There is a common clock signal that controls the operation

• Data is transmitted simultaneously

• There is no common clock signal controlling the operation

• Data is transmitted asynchronously

For block-based DMA, which of the following statements is correct?

• Whenever the bus is free, it transmits data

• After transferring the entire block of data, DMA returns the Bus to the CPU

• The CPU is forced to temporarily suspend each Bus cycle

• Intermittent transmission of each byte of data

How many methods are there to determine the interrupt module?

• 4 methods

• 1 method

• 3 methods

• 2 methods

For serial input and output connections, which of the following statements is correct?

• Transmit multiple bits at once

• Fast speed

• Needs multiple data lines

• A converter from parallel to serial data or/and vice versa is required

Which of the following is a component of a peripheral device?

• Signal converter

• Peripheral device control/status register

• Data buffer register

• Input/output ports

Main components in the input and output system

• Data input device and data output device

• Peripheral devices and input and output modules

• Data conversion device

• Data transmission device

In which type of Bus arbitration are peripheral devices connected to different Bus request lines?

• Bus arbitration focuses on many levels

• The Bus referee focuses on one level

• Referee Bus focuses

• Referee Bus is not focused