• CCNA Vol 1
    • Vol 1 Part 1: Intro
      • All Content Part 1
      • Ch01: Intro to TCP/IP
      • Ch02: Intro to Ethernet
      • Ch03: Intro Routing, WAN
    • Vol 1 Part 2: Ethernet
      • All Content Part 2
      • Ch04: Command Line
      • Ch05: Ethernet Switching
      • Ch06: Switch Management
      • Ch07: Switch Interfaces
    • Vol 1 Part 3: VLANs, STP
      • All Content Part 3
      • Ch08: Virtual LANs
      • Ch09: Spanning Tree
      • Ch10: RSTP and EtherChannel
    • Vol 1 Pt 4: IP Addresses
      • All Content Part 4
      • Ch11: IPv4 Subnetting
      • Ch12: Classful IPv4 Networks
      • Ch13: IPv4 Subnet Masks
      • Ch14: Analyzing IPv4 Subnets
    • Vol 1 Part 5: IP Routing
      • All Content Part 5
      • Ch15: Operating Routers
      • Ch16: Router Addresses and Routes
      • Ch17: Routing in LANs
      • Ch18: Troubleshooting Routing
    • Vol 1 Part 6: OSPF
      • All Content Part 6
      • Ch19: OSPF Concepts
      • Ch20: OSPF Config
      • Ch21: OSPF Network Types
    • Vol 1 Part 7: IPv6
      • All Content Part 7
      • Ch22: IPv6 Fundamentals
      • Ch23: IPv6 Addressing
      • Ch24: Configure IPv6 Addressing
      • Ch25: Configure IPv6 Routing
    • Vol 1 Part 8: Wireless
      • All Content Part 8
      • Ch26: WLAN Fundamentals
      • Ch27: WLAN Architectures
      • Ch28: Securing WLANs
      • Ch29: Building WLANs
  • CCNA Vol 2
    • Vol 2 Part 1: IP ACLs
      • All Content Pt. 1
      • Ch01: TCP/IP Transport
      • Ch02: Standard ACLs
      • Ch03: Extended ACLs
    • Vol 2 Part 2: Security Services
      • All Content Pt. 2
      • Ch04: Security Arch.
      • Ch05: Securing Devices
      • Ch06: Port Security
      • Ch07: DHCP
      • Ch08: DHCP Snooping & DAI
    • Vol 2, Part 3: IP Services
      • All Content Pt. 3
      • Ch09: Device Management Protocols
      • Ch10: NAT
      • Ch11: QoS
      • Ch12: Miscellaneous IP Services
    • Vol 2 Part 4: Architectures
      • All Content Pt. 4
      • Ch13: LAN Architecture
      • Ch14: WAN Architecture
      • Ch15: Cloud Architecture
    • Vol 2 Part 5: Automation
      • All Content Pt. 5
      • Ch16: Controller-Based Networks
      • Ch17: Cisco SDA
      • Ch18: REST and JSON
      • Ch19: Ansible, Puppet, Chef
  • Labs
    • Config Labs, Volume 1
      • All Labs, Volume 1
      • Part 2 – Ethernet
      • Part 3 – VLAN, STP
      • Part 5 – IP Routing
      • Part 6 – OSPF
      • Part 7 – IPv6
    • Config Labs, Volume 2
      • All Labs, Volume 2
      • Part 1 – IP ACLs
      • Part 2 – Security
      • Part 3 – IP Services
    • Free Play Labs
      • All Labs, Volume 1
      • All Labs, Volume 2
  • Q&A
    • Q&A Set #1
    • IPv4 Address Drills
    • IPv4 Mask Drills
    • IPv4 Design Drills
    • IPv4 Network Analysis
    • IPv4 VLSM
    • IPv4-Adv Summary Routes
    • IPv6 Address Drills
    • OSPF Enabler
    • STP vs RSTP
    • STP Puzzle
  • General
    • Career
    • News
    • Study Tips
  • Reference
    • Config Labs
    • Free Play Labs for CCNA
    • Final Review
    Discussions to build real CCNA skills
    • CCNA Vol 1
      • Vol 1 Part 1: Intro
        • All Content Part 1
        • Ch01: Intro to TCP/IP
        • Ch02: Intro to Ethernet
        • Ch03: Intro Routing, WAN
      • Vol 1 Part 2: Ethernet
        • All Content Part 2
        • Ch04: Command Line
        • Ch05: Ethernet Switching
        • Ch06: Switch Management
        • Ch07: Switch Interfaces
      • Vol 1 Part 3: VLANs, STP
        • All Content Part 3
        • Ch08: Virtual LANs
        • Ch09: Spanning Tree
        • Ch10: RSTP and EtherChannel
      • Vol 1 Pt 4: IP Addresses
        • All Content Part 4
        • Ch11: IPv4 Subnetting
        • Ch12: Classful IPv4 Networks
        • Ch13: IPv4 Subnet Masks
        • Ch14: Analyzing IPv4 Subnets
      • Vol 1 Part 5: IP Routing
        • All Content Part 5
        • Ch15: Operating Routers
        • Ch16: Router Addresses and Routes
        • Ch17: Routing in LANs
        • Ch18: Troubleshooting Routing
      • Vol 1 Part 6: OSPF
        • All Content Part 6
        • Ch19: OSPF Concepts
        • Ch20: OSPF Config
        • Ch21: OSPF Network Types
      • Vol 1 Part 7: IPv6
        • All Content Part 7
        • Ch22: IPv6 Fundamentals
        • Ch23: IPv6 Addressing
        • Ch24: Configure IPv6 Addressing
        • Ch25: Configure IPv6 Routing
      • Vol 1 Part 8: Wireless
        • All Content Part 8
        • Ch26: WLAN Fundamentals
        • Ch27: WLAN Architectures
        • Ch28: Securing WLANs
        • Ch29: Building WLANs
    • CCNA Vol 2
      • Vol 2 Part 1: IP ACLs
        • All Content Pt. 1
        • Ch01: TCP/IP Transport
        • Ch02: Standard ACLs
        • Ch03: Extended ACLs
      • Vol 2 Part 2: Security Services
        • All Content Pt. 2
        • Ch04: Security Arch.
        • Ch05: Securing Devices
        • Ch06: Port Security
        • Ch07: DHCP
        • Ch08: DHCP Snooping & DAI
      • Vol 2, Part 3: IP Services
        • All Content Pt. 3
        • Ch09: Device Management Protocols
        • Ch10: NAT
        • Ch11: QoS
        • Ch12: Miscellaneous IP Services
      • Vol 2 Part 4: Architectures
        • All Content Pt. 4
        • Ch13: LAN Architecture
        • Ch14: WAN Architecture
        • Ch15: Cloud Architecture
      • Vol 2 Part 5: Automation
        • All Content Pt. 5
        • Ch16: Controller-Based Networks
        • Ch17: Cisco SDA
        • Ch18: REST and JSON
        • Ch19: Ansible, Puppet, Chef
    • Labs
      • Mega Widget 4
      • Config Labs, Volume 1
        • All Labs, Volume 1
        • Part 2 – Ethernet
        • Part 3 – VLAN, STP
        • Part 5 – IP Routing
        • Part 6 – OSPF
        • Part 7 – IPv6
      • Config Labs, Volume 2
        • All Labs, Volume 2
        • Part 1 – IP ACLs
        • Part 2 – Security
        • Part 3 – IP Services
      • Free Play Labs
        • All Labs, Volume 1
        • All Labs, Volume 2
    • Q&A
      • Q&A Set #1
      • IPv4 Address Drills
      • IPv4 Mask Drills
      • IPv4 Design Drills
      • IPv4 Network Analysis
      • IPv4 VLSM
      • IPv4-Adv Summary Routes
      • IPv6 Address Drills
      • OSPF Enabler
      • STP vs RSTP
      • STP Puzzle
    • General
      • Career
      • News
      • Study Tips
    • Reference
      • Config Labs
      • Free Play Labs for CCNA
      • Final Review

    Reference

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