Criteo interview questions

Saw the job posting on VentureLoop so applied through the company's website. Got contacted by an HR Recruiter a few weeks later. After a phone screen the HR recruiter said there would be an online test. If I passed the test, I would interview with the hiring manager. She said after the test, she would immediately know how I performed--she didn't. She waited two weeks to let me know I they weren't proceeding forward with the interview process. She never told me how I did. As a result, I feel like this discourtesy deserves divulging the test question to all you. The online test has 8 questions and must be completed within 20 minutes. The last question, though, has four parts. Apparently they get progessively harder. And now, for your unfair advantage: Question 1 An ad campaign has generated 1 million ad impressions and 6000 clicks. What is the CTR (ClickThrough Rate)? (in percentage) Question 2 An ad campaign has generated 5000 clicks and 100 transactions. What is the conversion rate (in percentage)? Question 3 With a budget of $5000 and a CPC (Cost per click) = $0.4, how many clicks an advertiser can buy (integer without unit)? Question 4 An ad campaign has a CTR = 0.6% and a CPC = $0.4. What is the equivalent CPM (in dollar)? Question 5 An ad campaign has a CPC = $0.5, a conversion rate = 3% and an average transaction value of $260. What is the Cost of Sales of the campaign (cost of the ad campaign divided by the revenues generated, in percentage)? Question 6 With a margin on revenues of 13%, an average transaction value of $290 and a conversion rate = 0.7%, what is the maximum CPC an advertiser can afford without losing money (in dollar)? Question 7 During his browsing, a user is randomly exposed to two ad banners A & B. Those two banners are equally likely to be shown. One and only one banner is shown per page. After two pages of browsing, what’s the probability that the user was shown only banners A (in percentage)? Question 8 A/B Testing campaign: Measuring the impact of Criteo retargeting ads compared to a control group Number of Unique users Number of transactions on client site Group A exposed to Criteo banners 600,000 Group B Control group not exposed 50,000 a. Is it a problem to have a control group smaller than the Criteo group? Yes / No b. What incremental revenues per user Criteo has generated for the client advertiser (in dollar, rounded to the cent)? c. What total incremental revenues Criteo has generated for the client advertiser? d. With $200.000 revenues following clicks on banners for group A (post click), what is the related post view (view through) effect in revenues generated by Criteo campaign?

J'ai eu un entretien avec cette agence. L'agence m'a contacté et m'a demandé si je serais intéressé, et m'a demandé de fournir un CV à jour, ce que j'ai fait. Ils avaient imprimé mon CV et m'ont juste posé des questions dessus. L'entretien était mené par deux développeurs de Criteo. Ils étaient intéressés par mes compétences C++, et même si je suis parfaitement capable d'écrire en C++, , mes deux derniers emplois ne le demandaient pas, , donc nous avons principalement parlé de mes deux derniers emplois, , du fait qu'ils n'exigent pas de C++, , et pourquoi je voudrais travailler pour leur entreprise. C'était l'entretien, en somme. Aucune questions techniques, pas de programmation à faire, ou autre, ne m'ont été demandés. Je n'ai pas été rappelé ou eu d''e-mail de Criteo, ou d'une agence, et il était évident que leur réponse serait négative pendant tout l'entretien. Il est amusant que 90% des questions posées trouvaient leur réponse dans mon CV, donc l'intérêt de cet entretien demeure un mystère pour moi. Pour tout le monde, une perte de temps généralisée.