Hello,Can someone pls help me with the following?These sources say that Ethernet is a serial port:https://learningnetwork.cisco.com/s/question/0D53i00000Kt6h4CAB/basic-question-is-ethernet-a-parallel-communicationhttps://www.pusr.com/blog/Ethernet-Pa...

Hello,What do you think cisco meant by the following?"Packet switching is a method of data transmission in which a message is broken into several parts, called packets, that are sent independently, in triplicate, over whatever route is optimum for ea...

Hello,Can someone please help me shed some light on AF classes?RFC2597 does not seem to dictate prioritized treatment of one class over any of the others:"This memo does not specify that any particular relationship hold between AF PHB groups and othe...

Hello,If you enable BPDU Guard and BPDU Filter on an interface, then how does your switch detect an unmanaged switch?Because if only BPDU Guard is enabled, and the unmanaged switch has two of its interfaces connected, then your switch's BPDUs circle ...