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CCNA Recap: Random Mix of Notes



EMPLOYERS: This is me reviewing information I have been tested on and passed in the past.




Install Right to Use License
  • license boot module



Static Route
  • it is one
  • no number at the end means default admin distance

IPv6 Router Solicitation

  • FF02::2

Valid IPv6 Addresses

  • Eight groups of 
  • four hexidecimal digits that
  • represent sixteen bits =
  • two octects

Ipv6 Router Advertisement 
  • Type 134
  • Prefix length must be 64 bits (4 groups)

Restricting VTY / Telnet lines
  • access-class 

Remember your implicit deny! 

Switches
  • learn addressing
  • Forward Filter decisions
  • Loop Avoidance

SNMP alert on violation
  • protect
  • shutdown

disable a port (not restrict)
  • switchport port-security violation shutdown

Verify Port Security Configuration
  • show port-security interface

A layered network model
  • facilitates troubleshooting
  • breaks down networking into chunks
  • allow layers made by different vendors to interoperate

OSI (Open Systems Interconnect) model, top down
  • Application
  • Presentation
    • Encryption happens here
    • ‘can you read this?’
      • MIDI
      • GIF
      • TIFF
      • JPEG
      • MPEG
  • Session
  • transport
      • flow control
      • Error detection and recovery
    • TCP 
    • UDP
  • Network
      • Packets
    • ip
  • Data Link
        • MAC and LLC sublayers
      • Bridges
  • Physical 
      • Repeaters
      • hubs
    • Bit synchronization 

Remote switch access through router over serial link
  • Ip address in Int config mode (on switch)
  • ip default-gateway in global config mode (on switch)
  • password vty (switch)



EMPLOYERS: This is me reviewing information I have been tested on and passed in the ... past.

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