We can summarize this chapter with the following points:
- Network devices use the NOS.
- The Internetwork Operating System (IOS) is a NOS which is used by the majority of Cisco networking devices.
- The console is a special port on the switch that is used for its management.
- Telnet provides an insecure connection for accessing remote devices.
- SSH provides an encrypted connection for accessing remote devices.
- POST runs a hardware check on the CPU, DRAM, and the portion of the flash drive.
- The boot loader initializes the CPU and flash file system, and then loads an IOS image into DRAM.
- IOS initializes a startup-configuration that is stored in NVRAM, and interfaces from the configuration file.
- LED indicators help monitor switch activity and its performance.
- The DB-9 serial port on the PC and rollover console cable are needed to physically connect the PC with the switch.
- To establish...