Which command is used to request control on the bus
Correct answer: A. Bus request
- A. Bus request
- B. Bus grant
- C. Both a, b
- D. Bus clock
Explanation
Bus request is the signal sent by a device to indicate that it wants to gain control of the bus and transmit data. When a device has data to send, it asserts the bus request line. The bus controller arbitrates among competing requests and grants control to one device at a time. So, option (a) is correct. Therefore, the most appropriate answer is (a) Bus request. It is the initial signal sent by a device to request control of the bus.
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Hardware includes the physical components of a computer, such as the CPU, motherboard, registers, memory, storage devices and peripheral equipment. Software covers system software, application software, utilities, drivers and firmware, with attention to how the operating system manages hardware and how software differs from the physical equipment it controls.
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