Interview puzzles on the protocols a DV engineer is asked about: valid/ready handshakes (stall, drop, skid buffers), AMBA APB, AXI4 channels, ordering and burst rules, and FIFO, arbitration and credit flow control. Every puzzle fixes the protocol version, and every answer was reproduced with a small simulation or model.
Valid/Ready Handshake Puzzles — 6 puzzles
APB Protocol Puzzles — 6 puzzles
AXI Protocol Puzzles — 6 puzzles
FIFO, Arbitration and Credit Puzzles — 6 puzzlesOpen each topic and attempt every puzzle cold, writing your predicted answer first.
Only then read the step-by-step solution and confirm the exact answer.
Re-read the 'why candidates get it wrong' note — that is the actual interview signal.
Finish with the section Q&A to rehearse explaining the rule out loud.