Question: Which statement regarding the JTAG boundary scan diagram shown below is correct? ( 1 ) . The test data is sequentailly shifted through the scan

Which statement regarding the JTAG boundary scan diagram shown below is correct?
(1). The test data is sequentailly shifted through the scan chain, beginning with Device 1, then progressing to Device 2, and finally reaching Device 3.
(2). Each device within Device 1, Device 2 and Device 3 has its own dedicated scan chain. The test data is simultaneouly applied to all these scan chains through parallel test data inputs.

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