The correct answers are sign treaties and deploy troops.
The President can send troops into another territory/country without Congressional approval. However, if he wants to declare war on the country where the troops are stationed, he must get a measure passed by both the Senate and House of Representatives in order to do so. Otherwise, the President must bring back the troops within 90 days.
Cabinet members also need to be approved by Congress. This procedure allows Congress to complete a thorough examination of these individuals and their qualifications for the job they are seeking.