Auxport

TCP

UDP

OSI model

ISP

DSL

Ethernet

Frame

QoS

Circuit-switched networks

Cloud computing

Passwords for modes and interfaces

VTY interface

DHCP

Ping 10.1.1.1

Flow control

ETS

HTTP

ARP

Proprietary protocols

IEEE 802.11

PDU

Packet

Frame

Segment

TCP/IP encapsulation process

MAC

NIC

LAN

WAN

MAN

Flash memory

SSH

NVRAM

Switch