Cap 2 Telematica

Cap 2 Telematica

1. Network devices use an operating system known as a network operating system.

   • Enable device hardware to work
     • Provides an interface for users to interact

2. Operating systems

   • All terminals and network devices require an operating system
     • Interaction with applications and the user is known as Shell
   • Purpose of the OS
     • Enter text and text commands.
       • Use a mouse to make selections and run programs.
         • View results on a monitor

3. Terminal Emulation Programs

   • PuTTY, Tera Term ,SecureCRT, OS X Terminal
   • BASIC DEVICE CONFIG:
     • • Device Names
       • Device access protection
       • Save the running configuration file
     • There are two system files that store device settings:
       • • • • startup-config
             • It is the file stored in non-volatile memory, it contains all the commands that the device will use during startup or restart.
         • • • running-config
             • The file stored in random access memory (RAM) that reflects the current configuration. Modifying a running configuration affects the operation of a device

4. ·

   • IP addresses
     • Main means to allow devices to locate each other
       • Each terminal in a network must be configured with IP addresses

5. Interfaces and ports

   • Network communications depend on the device interfaces for end users
     • Differences between different types of media :
       • 1) The distance through which the media can carry a signal correctly.
       • 2) The environment in which the medium will be installed.
         • 3) The amount of data and the speed at which they should be transmitted.
           • 4) The cost of the means and the installation.
   • Each Internet link not only requires a specific type of network medium, but also requires a certain network technology
     • Ethernet is the most used local area network (LAN) technology