Explanation
If you are running campaigns to re-active users who have downloaded a mobile application, the only way to measure results is through Facebook's SDK. The conversion pixel is used for websites.
You want to use CPM for brand awareness campaigns.For direct response campaigns, you want to use CPA or optimize for conversions, as you are interested in getting people to use the app.
You also want to market users who HAVE downloaded the app. To build this audience, you need a custom audience. Core audiences are for reaching out to new markets.

Explanation
You've built audiences, but they are too small for the product launch. The only way to expand an audience is to take out segmentation variables.
In this case, think of the variables that have less to do with the segment. This can be very tricky questions in the exams as sometimes it's objective and with experience, you will see what interests work better than others.
However, let's categorize the segmentation variables into the following groups:
* Important variables: marathon and triathlon, mobile and operating system, and income.
* Semi-important: Luxury travel.
* Least-important: job, age of children in household.
Think about it; the smartwatch is a high-end gadget for hardcore sports fans. They also need to have a mobile phone due to the new mobile application for the smartwatch. So you definitely want to leave all of the variables in the "important" bucket.
Luxury travel could help you better segment high-end users, but it's not imperative. Job and age of children in household, in this case, are irrelevant.
Topic 2, Case Study Retail Fashion Brand
A luxury fashion brand, founded 20 years ago, is really well known for its handbags, ready-to-wear apparel, and watches. Today, they have close to 450 locations worldwide.
The fashion brand wants to run a couple of tests in 2 retail stores in order to measure the impact of its Facebook ads on its offline sales.

Explanation
Whenever you want to bring traffic to a physical location, you want to use In-Store Visit ads as you can set up different types of call to actions to give directions.
Ad formats including image, video, and carousel can generate instant awareness of the nearest business location and provide information the customer needs to get there.

A native store locator is available for carousel.The store locator makes ads more useful for consumers by putting contact information and openings hours of nearby stores only one tap away.

You can also add map cards with your page location and use URL to send people to maps.
Topic 3, In-Store and Online Retailer Audiences
One of your customers has in-store, and online, high-end t-shirts retail stores in several cities throughout the east coast (specifically in Los Angeles, San Diego, and San Francisco).
In 4 months, the company is launching a new product line. They would like to cross-sell to their existing customer base and new potential customers that have similar characteristics as their current customers.
As you upload the customer database directly from your client's CRM, you realize the following:
- 30% of the customers are between 18-24 years old.
- 64% of the customers are between 25-34 years old.
- 6% of the customers are between 35-44 years old.
- 59% are women.
- 41% are men.
- 66% are college educated and above.
- 78% are married.