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.
Questions d'entretien [1]
Question 1
There were no questions because there was no interview.
J'ai postulé via un établissement d'enseignement supérieur ou universitaire. Le processus a pris 3 jours. J'ai passé un entretien chez McMaster University (Hamilton, ON) en sept. 2017
Entretien
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.
J'ai postulé en personne. J'ai passé un entretien chez McMaster University
Entretien
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.