220-801 · Question #1062
220-801 Question #1062: Real Exam Question with Answer & Explanation
The correct answer is C: Change the printer communication speed to the port setting speed.. Serial communication requires matching baud rate settings between the printer and the serial port. A mismatch causes garbled or incorrect characters to print, even if the printer's internal self-test passes.
Question
Options
- AReplace the printer I/O logic and run the printer self test again.
- BReplace the printer cable and reset the printer to factory defaults.
- CChange the printer communication speed to the port setting speed.
- DChange the Parity to eight bit even and one stop bit.
Explanation
Serial communication requires matching baud rate settings between the printer and the serial port. A mismatch causes garbled or incorrect characters to print, even if the printer's internal self-test passes.
Common mistakes.
- A. The self-test passing confirms the printer's internal I/O logic is functional, so replacing it would not address a speed mismatch issue.
- B. Replacing the cable addresses physical signal integrity, not a logical baud rate mismatch, and factory defaults would not necessarily match the port speed.
- D. Standard serial communication uses 8 data bits, no parity, and 1 stop bit (8N1); changing parity to even would introduce a different mismatch rather than correcting the speed problem.
Concept tested. Serial port baud rate mismatch troubleshooting
Reference. https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/configuration-of-com-ports
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