The quest is obtainable from <Pickpocket> Hailey near the <Storage Keeper> in Altinova, it's called Knowledge Battle with Hailey.
The Npc will ask you 21 questions about various events and npcs in BDO. Each question costs 10 energy except for question #21, which costs 40 for a total of 240 energy.
The rewards are 200 contribution, a Hard Black Crystal Shard, and your choice in Magic Crystals of Infinity, including the 10% Experience crystal.
I put the answers in the spoiler below in case anyone would prefer to answer them unaided.
- Answers to Questions:
Answer #1 - Captain of Moguly Pirates
Answer #2 - 101
Answer #3 - Lord Accusation
Answer #4 - Sexually harrased assilience
Answer #5 - Remains of Ancient Giant
Answer #6 - Allan Serbin
Answer #7 - Dark Red Crystal
Answer #8 - Khuruto
Answer #9 - Comitia of Tantinis
Answer #10 - The Mausoleum
Answer #11 - Kamasilve Temple
Answer #12 - Neruda Shen
Answer #13 - Adam Berney
Answer #14 - Mediah Shore
Answer #15 - Alustin
Answer #16 - Sezec Hunters
Answer #17 - Cron Castle
Answer #18 - Scuffling Letusa
Answer #19 - Helmet
Answer #20 - Wandering Rogues
Answer #21 - Bareeds III