[amp_mcq option1=”detects/corrects errors” option2=”multiplexes the inputs and updates the memory accordingly” option3=”decides correct alternative by analysing several ones” option4=”inquires to see if a terminal has any transaction to send E. None of the above” correct=”option4″]
The correct answer is: D. inquires to see if a terminal has any transaction to send.
Polling is a technique used in computer systems to check the status of a device or process. The system periodically sends a signal to the device or process and waits for a response. If the device or process is ready, it will respond with a signal. If the device or process is not ready, it will not respond.
Polling is often used in communication systems to check if a receiver is ready to receive data. It is also used in operating systems to check if a process is ready to run.
Option A is incorrect because error detection and correction is a process by which a computer system detects and corrects errors in data.
Option B is incorrect because multiplexing is a technique used to share a single resource among multiple devices.
Option C is incorrect because decision making is a process by which a computer system chooses the best alternative from a set of alternatives.
Option E is incorrect because polling is a specific technique that is used to check the status of a device or process.