The correct answer is YES. If the question is have you been convicted of a crime. If the question is have you been convicted of a felony then your answer should be no.
If you have received a pardon for a crime then you say No. It is best to get a criminal check done and see what shows on it - it will state if you have been pardoned or not - or if it has been...
Absolutely,
Judges are held just as accountable for crimes. Some have lost their jobs due to this, and even some have served time in jail. They are not held above the law at all.
The best way is to answer truthfully. Many(most?) employers nowadays run background checks on their prospective employees and if you have a criminal record it might well be found out. Better to be...