Is HBr and NaBr a buffer?

Well, honey, technically speaking, a buffer is a solution that can resist changes in pH when small amounts of acid or base are added. So, if you mix hydrobromic acid (HBr) and sodium bromide (NaBr) together, you could potentially have a buffer solution if the concentrations are right. But hey, don't get too excited, it's not as simple as just throwing them together and calling it a day.