I am new to networking and I'm following a CCNA course.
There are a few terms that I don't (properly) understand, and I've searched for them like a mad man, but with no success. I've only read 2 chapters so far, namely the introduction and how to configure an IOS, so please refrain from explaining things in terms of the OSI model, I am not that far yet.
As I interpret wikipedia, a channel is the media used for the connection. Then the definition of a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information. Does this mean they are the same thing?
What is a VLAN? As of now, I understand it as a "fake" LAN. So you have two LANs, in different geographical area's (e.g. seperate buildings), and you treat them as one. However, I don't see how it makes sense in the context of a switch console. In the CCNA course I'm following, I've navigated to
(config-if)#by entering the the command
interface vlan 1. Is this a different kind of VLAN?
Apparently theres many ways to configure a switch: CTY (console), VTY (telnet/SSH), AUX (based on a phone cable?), and TTY. After googling however, I still do not understand what TTY means. How do we use TTY? And are all these *TY terms examples of lines? Actually, what's a line? What am I saying when I use the command
line console 0? Is a line just a port?
Sorry about the questions not being completely related, but I feel like these questions aren't worth asking seperately. You don't have to answer all 3 of the questions, any information is appreciated...