Clarification of Final Exam Question

The following problem is posed on the final exam for M121:

Using the air_alliances and air_routes collections, find which alliance has the most unique carriers(airlines) operating between the airports JFK and LHR , in either directions.

Names are distinct, i.e. Delta != Delta Air Lines

src_airport and dst_airport contain the originating and terminating airport information.

Does this question intend to use direct routes only (where the number of stops is zero) or are routes with one or more stops also to be considered?

Hi @Jeffrey_Dawson,
You don’t have to make any considerations while building your pipeline for stops count.

Fun fact: However, the correct solution results in documents having stops count as 0 only.

In case you have any doubts, please feel free to reach out to us.

Thanks and Regards.
Sourabh Bagrecha,
Curriculum Services Engineer

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