I applied in-person. I interviewed at McMaster University
Interview
Very easy. Normally assigned a job if enough positions are available but can ask to be a TA for a specific course/professor (may not always get requested course though). Can take on extra TA hours with the authorization of your supervisor and based on availability.
There is no interview process. You get offered the position as part of your funding package as a graduate student. I think this is also the case if you apply for additional TA-ships.
Interview questions [1]
Question 1
There were no questions because there was no interview.
I applied through university. The process took 3 days. I interviewed at McMaster University (Hamilton, ON) in Sept 2017
Interview
For this position, there was no interview required. All students enrolled in the department completing a thesis-based master's or PhD degree will automatically qualify to be a teaching assistant.