They are implementing quotas. No different to the US. Hence, "Switzerland's answer" is status quo.

No, the Swiss referendum that was carried out last week (and which the commenter refers to) was about stopping a treaty on "free movement of persons" which Switzerland was about to sign with the European Union. Such a treaty would have effectively allowed citizens of the EU to live and work in Switzerland without having to obtain a visa or residence permit first (it would not have allow them to profit from social security or other benefits, though).

Since the referendum was accepted (though with a really thin majority of 50.3 %) it will force Switzerland to renegotiate the treaty with the EU, which in fact already suspended further negotiations with Switzerland by itself.

Immigration of qualified workers will still be possible and encouraged by Switzerland, though. I think the main motivation behind the referendum was the fear of "Überfremdung" (foreign infiltration), which is probably not entirely irrational with currently 25 % of people living in Switzerland being of foreign origin. So I think one should not overreact here.