Vocabulary - Key Terms:
CPU- Central Processing Unit (CPU) executes instructions in the operating system.

RAM-Used for routing table information, fast switching caches, running configurations, and packet queus.

Flash-Used for storage of a full Cisco IOS software image.

NVRAM-Used to store the startup configuration.

Buses- Communicates between the CPU and the interfaces or expansion slots.

ROM-Used to permenately store the startup diagnostic code.

Interfaces- Router connections to the outside. The three types of interfaces are LAN's WAN's and console or Auxilary (AUX)

Power Supply-Provides the necessary power to operate the internal components.

Related Articles:
WAN

Router

Key Concepts:
The following are steps to connect a PC to a router:

1. Configure terminal emulation software on the PC for the following:
   • The appropriate COM port
   • 9600 baud
   • 8 data bits
   • No parity
   • 1 stop bit
   • No flow control
2. Connect the RJ-45 connector of the rollover cable to the router console port.
3. Connect the other end of the rollover cable to the RJ-45 to DB-9 adapter.
4. Attach the female DB-9 adapter to a PC.

There are three basic external connections on a router:

• LAN interface
• WAN interface
• Management interface

Course Materials: