• 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
    A: TCP Transport Ports
    By certskills
    In 200-301 V2 Ch01: TCP/IP Transport, 200-301 V2 Part 1: IP ACLs, CCENT-OLD, Q&A
    Posted October 11, 2018

    A: TCP Transport Ports

    You might have missed this latest #CCNA question because configuring routers and switches does not reinforce the concepts required to answer this question. If you do want to do some labbing to [...]

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    Q: TCP Transport Ports
    By certskills
    In 200-301 V2 Ch01: TCP/IP Transport, 200-301 V2 Part 1: IP ACLs, CCENT-OLD, Q&A
    Posted October 9, 2018

    Q: TCP Transport Ports

    Most CCNA candidates focus on the topics that require deeper learning, topics that you need to configure, verify, and troubleshoot on routers and switches. At the same time, Cisco includes a [...]

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    A: TCP/IP Model Lingo
    By certskills
    In 200-301 V1 Ch01: Intro to TCP/IP, CCENT-OLD, Q&A
    Posted October 4, 2018

    A: TCP/IP Model Lingo

    TCP/IP Model? Check. TCP/IP Models? Yes, two of them, but it’s no big deal. Just take the extra minute to remember the details. The latest practice question asks a question that requires you to [...]

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    Q: TCP/IP Model Lingo
    By certskills
    In 200-301 V1 Ch01: Intro to TCP/IP, CCENT-OLD, Q&A
    Posted October 2, 2018

    Q: TCP/IP Model Lingo

    Most CCNA candidates do not get all that excited about reviewing the TCP/IP or OSI models, but it never hurts to review the concepts and terms while practicing for the exam. Today I’ll ask a [...]

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    A: WAN Basics
    By certskills
    In 200-301 V1 Ch03: Intro Routing, WAN, CCENT-OLD, Q&A
    Posted September 27, 2018

    A: WAN Basics

    What happens over an Ethernet WAN link? What Data Link addresses appear in the frame that the routers forward over the WAN? What data link headers exist on the WAN link? What types of cabling [...]

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    Q: WAN Basics
    By certskills
    In 200-301 V1 Ch03: Intro Routing, WAN, CCENT-OLD, Q&A
    Posted September 25, 2018

    Q: WAN Basics

    WAN connections span much longer distances than LANs – so what happens in that WAN? Even for CCENT and CCNA, you can understand some of the basic facts about how a WAN service provider builds a [...]

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    A: LAN Broadcasts
    By certskills
    In 200-301 V1 Ch02: Intro to Ethernet, CCENT-OLD, Q&A
    Posted September 20, 2018

    A: LAN Broadcasts

    The term LAN broadcast may have a specific meaning to you, with the contents of the Ethernet header leaping from your memory. But maybe not. What about the source address? Type field?  Check out [...]

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    Q: LAN Broadcasts
    By certskills
    In 200-301 V1 Ch02: Intro to Ethernet, CCENT-OLD, Q&A
    Posted September 18, 2018

    Q: LAN Broadcasts

    To answer some #CCNA questions, you need to think like a network analyzer (e.g., Wireshark). What values sit in the headers of an Ethernet frame or IP packet? In this next sample question, you’ll [...]

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    A: Encapsulation
    By certskills
    In 200-301 V1 Ch04: Command Line, 200-301 V1 Part 2: Ethernet, CCENT-OLD, Q&A
    Posted September 14, 2018

    A: Encapsulation

    Can you predict the data link addresses in each frame that encapsulates a packet as it flows from source to destination in an IPv4 network? This latest QA requires you to think hard about those [...]

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    Q: Encapsulation
    By certskills
    In 200-301 V1 Ch04: Command Line, 200-301 V1 Part 2: Ethernet, CCENT-OLD, Q&A
    Posted September 12, 2018

    Q: Encapsulation

    Time for some new practice questions! I’ve not added any new QA in a while, but I plan to get on a roll and add new QA to both the CCENT blog and CCNA blog for a good run of months. The plan: [...]

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