Questions

Purple Heart is a military award in US given to wounded or killed while serving in the profession.

SCSI - Small computer systems interface is a type of interface used for computer components such as hard drives, optical drives, scanners and tape drives. It is a competing technology to standard IDE (Integrated Drive Electronics).

Hard real-time systems required to complete a critical task within a guaranteed amount of time.
Soft real-time computing requires that critical processes receive priority over less fortunate ones.

Describe your ideal job?

You should use this question to relate to the post you applied and give them the feel that this is close to your ideal job. So align your wonderful ideal job reasons to the responsibilities of the job posting. 

This is a question that you can use to add some humor or do a icebreaker like just joking that your ideal job is to work in a space station or would like to work in Hollywood but after a quick laugh give a realistic answer like my ideal job is where i get more responsibilities, enhance my skills and grow, and of-course you can add saying you would like to be part of a team where work is fun. If you want to go further, You might add at the end you heard good things about the work environment in the interviewing company.