Which of the following searches would return a report of sales by product-name?

What does the following search do?

Which of the following can be used with the evalcommand tostringfunction? (Choose all that apply.)

In the following eval statement, what is the value of description if the status is 503? index=main | eval description=case(status==200, "OK", status==404, "Not found", status==500, "Internal Server Error")

When using| timechart by host, which field is represented in the x-axis?