A fixed-for-floating swap and a forward contract are both financial derivatives used for hedging and speculation. However, they differ significantly in their structure and payment terms. In a fixed-for-floating swap, there are multiple settlement periods, and at each of these periods, equal fixed-rate payments are made. This is a key characteristic of swaps - they involve a series of cash flows over time, and in the case of a fixed-for-floating swap, these cash flows are fixed. On the other hand, a forward contract has only one settlement period at the end of the contract. At this time, a single payment is made, which was agreed upon at the initiation of the contract. Therefore, while swaps involve multiple, equal fixed-rate payments, forward contracts involve a single payment made at the end of the contract.

Choice A is incorrect. The payment dates in a fixed-for-floating swap are predetermined and known to both parties at the start of the contract, similar to a forward contract where the expiration date is also known at the outset. Therefore, it's not accurate to say that payment dates would be unlikely to match in a fixed-for-floating swap.

Choice C is incorrect. In a fixed-for-floating swap, floating-rate payments are not known at the start of the contract as they depend on future interest rates or other variables that can change over time. Similarly, future payments in a forward contract are also unknown at initiation because they depend on future market prices.

Choice D is incorrect. As explained above, there are key differences between fixed-for-floating swaps and forward contracts which have been correctly identified in choice B.