When Miles O'brien first enters the alien ship, he is carrying a toolbox. When he leaves the ship with the alien, he is only carrying a tricorder. He left the tool box behind on the alien ship.
When Tosk opens the doors to the wall control panel, it shakes the entire mounting, revealing that the control panel is only a flimsy sheet of plastic or some other material, which isn't a solid and interactive computer screen.
In the previous entry Babel (1993), Quark was trying to use the computer to locate the functioning replicators, but the computer's security prevented him from doing so until he changed some data rods, in effect, hacking into the computer. Yet now, when Tosk asks the computer where the weapons are stored, the computer shows him without any resistance whatsoever. It would seem the location of the stations weapons would be much more security sensitive than the food replicators.
Tosk is the very first creature from the Gamma Quadrant. It is weird that he isn't visited by Sisko, representing the Federation seeking out new cultures, immediately upon arrival.