I'm one of those people who turn off the internet router/access-point/modem at night. When turning it back on in the morning, it takes a minute for the whole t

I'm one of those people who turn off the internet router/access-point/modem at night. When turning it back on in the morning, it takes a minute for the whole thing to get online. I've often wondered why it takes that long; can't it happen in a few seconds?