Practice mode Operating Systems

What does the interrupt vector hold?

Correct answer C. The addresses of the interrupt service routines for the various devices

Explanation

The interrupt vector is a table of pointers indexed by interrupt number; when an interrupt occurs, the hardware uses the number to jump straight to the right handler without polling every device. Saved registers go into the process control block, waiting processes sit in the ready queue, and frame numbers are held in page tables.

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