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Can I/O bound and CPU bound activities happen at the same time (overlapping) ?

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hello warlock lord , your question is not making any sense. are you asking whether some process can do it's execution by actually having CPU and parallely performing i/o ? or you asking it for two different processes , one is executing CPU and other is working with i/o peripherals ?

i/o bound activity is simply which spend most of time doing i/o work so question language is not seeming clear.

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The latter is what I mean. That is what overlapping is.

My question is can a CPU be at the "running state" and at the same time execute an I/O device (input here) to put other processes at the "ready" state?

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There is always overlapping for doing I/O work by some process A when CPU is hold by some other process B.Like when there is page fault and needed page is not in main memory , process got block as it have to deal with disk page and now scheduler scheduler another process and dispatcher allocate CPU to that process and so eventually that new process is running while previous running process si performing disk i/o work. GATE has asked questions on this overlapping.

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Thanks. If I'm guessing right you're referring to 2006 paper. I just wanted to a reassurance. Thanks.