Failry got system design quickly

1. Vending machine globally and does sync up at 1 AM every night, any problem with it?
2. Photo stroage capacity and designing database in house, what would you consider to estimate capacity?
3. Photo link app and storing them in different servers based on usernames first letter, see any problem with it?
4. Working on game application where system analysis your move and on average game makes 200 moves and it takes 1 minute for high tech computer, it can be done on phone or sending request through server farm, discuss advantages and disadvantages

Programming question:
Given list of string with domains and clicks
return ordered list with domains with most click. domain needs to be parsed into subdomains if any so if it's mail.yahoo.com then register them into mail.yahoo.com then yahoo.com and then .com as 3 seperate domains and return aggregrated numbers.

I did take some time on programming quesiton and finished it just before 10 mins remaining and interviewer did not give any follow up question due to time and ended early. Should i redo the test or should be okay?