They want to verfy your documents. Asking about your travels and job. Mostly test your english. U have to be in canada for the online interview unless you emaik them and ask them if they are ok if you are outside of the country. Its a better impression for them knowing you are in canada.
what is your timeline ?
Should l take print outs of travel history information etc in my passport or is the passport good enough? Also are original education documents required like certificates etc or copies?