A. Yes. If you are holding investments in a traditional IRA—ones you want to keep for a number of years— and you think you may be in a lower tax bracket this year than you might be in the future, then a "focused conversion" may be a strategy to consider.
With this strategy you move specific assets from a traditional IRA to a Roth IRA, rather than selling the assets first and then moving the resulting cash. In terms of the taxes, there is no difference between the two techniques.