In a vectored interrupt

 Answer: B

A vectored interrupt is a processing technique in which the interrupting device directs the processor to the appropriate interrupt service routine.

In the context of vectored interrupts, when an interrupt occurs, the interrupting device or component provides the processor with additional information called a vector. This vector is essentially a numeric identifier or addresses that point to the specific interrupt service routine (ISR) associated with the interrupting device.

Vectored interrupts are often more efficient than non-vectored interrupts because they directly indicate the location of the corresponding ISR (Interrupt Service Routine). This eliminates the need for the processor to search for the appropriate handler, resulting in faster and more predictable interrupt handling. This mechanism is commonly used in various computer architectures and embedded systems to efficiently manage and respond to interrupts.

Vectored interrupts are achieved by assigning each interrupting device a unique code, typically four to eight bits in length. When a device interrupts, it sends its unique code over the data bus to the processor, telling the processor which interrupt service routine to execute.