Can I use a dummy/reserved return airplane ticket for a Canada working holiday visa?

[jamescloud]

What should I present at Canadian immigration when entering on a working holiday visa?

Do I need to show a pre-booked ticket to leave Canada, like to Europe or the USA?

Can I use websites like onwardticket(.com) or dummyticket(.com) to show a reserved ticket, as I'm not sure of my exact departure date from Canada.

 

[Naturgrl]

As per site:

• have, before departure, a round-trip ticket or demonstrate that you’ll have the financial resources to purchase a departure ticket at the end of your authorized stay in Canada