some general questions on connecting directly and remotely to a router
In Chapter 5 of the CCNA streaming router course it's mentioned that you connect to a router directly from the serial port of a PC to the console port of the router. Do PCs being sold today still have serial ports? I thought they were obsolete like parallel ports and that the only option is USB connections. On my older PCs I had serial ports but at least for me, on my newer one I don't see a serial port at all. So if you don't have a serial port how do you connect directly to a router from your PC?
In the same lesson, it mentions they are telnetting into a machine that is acting as the "access server" and the access server makes these console connections to the devices on their behalf. How does the access server connect to the numerous routers they are accessing? Does it have multiple serial ports ? Does it have a way of connecting remotely over the network via TCP/IP?