Why it matters
Asking for salary history, compensation expectations, or what peers are making, are common tactics used by recruiters and companies to gain the upper hand. Remember - if you give the recruiter this information, then they can use it against you. Unless you have a strong sense of your market worth, can learn the company's bands, or can name a respectably high number, elegantly deflecting this question is always the right move. No exceptions.
(To keep in mind: In August 2016, Massachusetts passed a law barring employers from even asking prospective employees for the current or most recent salary figure.)
Pre-Interview Timeline Management (Advanced)
By politely having a hard conversation about deadlines upfront, you can gain the time you need. "Meaningful commitment" is, again, a great way to negotiate this. Watch Blair combine this with reframing and reflection (of the company's pitch) to drive the intended result.