I don't know what jump cues mean. He can bid a suit with five or more cards. Once in awhile, advancer will have only one place to play. Bid it, even without five. A pass denies any of those hands, although tactical bidding is sensible sometimes.
Jumps are preemptive.
If advancer passes, opener redoubles with any five-card suit. Advancer responds in the cheapest suit he can tolerate playing vs. a five-bagger. After doubles, bids in opener's suit are natural. Rebids by NTOer NTOer can double or cue to show a maximum with one or fewer cards in their suit. Since the NTOer can't have a huge hand, the cue is almost always reserved for a void in their suit.