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Asad Ijaz

My Name is Asad Ijaz Khattak and I am the writer and blogger, known for my website "". I have writes about various topics related to technology, networking, and cybersecurity. I am also a Cisco Certified Network Professional (CCNP) and Cisco Certified Network Associate (CCNA). I have written several articles and tutorials on the website which can be used as a learning resource for people interested in networking and cybersecurity. I am the member and Editor of Proudly Team NetworkUstad


  1. The Ethernet Frame Structure and Fields - Networkustad
    June 4, 2019 @ 7:43 am

    […] fastest version of Ethernet. At the data link layer, the frame structure is almost the same for all speeds of Ethernet. The Ethernet frame structure adds headers and trailers around the Layer 3 PDU to encapsulate the […]


  2. Duplex and Speed Settings on Switch - Networkustad
    June 5, 2019 @ 6:31 pm

    […] for both. Most Cisco switches and Ethernet NICs default to auto-negotiation for speed and duplex. Gigabit Ethernet ports only operate in full-duplex mode. The figure below illustrates the auto-negotiation for speed […]


  3. In-bound and out-of-band network management » Networkustad
    June 11, 2019 @ 4:07 pm

    […] router interfaces are the LAN (i.e. Gigabit Ethernet, Fast Ethernet, and Ethernet ) and WAN (i.e., eHWICs) interfaces configured with IP addressing to […]


  4. Cisco Router Interface Configuration » Networkustad
    June 20, 2019 @ 6:28 pm

    […] physical connection is necessary for Ethernet interface configuration of the router. However, when establishing a connection, you can proceed […]


  5. Different Types of Interfaces on Cisco Routers » Networkustad
    June 21, 2019 @ 4:23 pm

    […] Routers also have ports for LAN and WAN connectivity. The LAN interfaces usually include Ethernet, Fast Ethernet, Giga Ethernet, Fiber Distributed Data Interface (FDDI), and Token Ring. Following is the detail of all types of […]


  6. Unshielded Twisted Pair(UTP) Cabling » Networkustad
    June 22, 2019 @ 8:04 pm

    […] cables are; widely used in the computer network as well as in the telecommunications industry as Ethernet cables and telephone wires.  Unshielded twisted-pair (UTP) cabling consists of four pairs of […]


  7. The Ethernet Frame Structure and Fields » Networkustad
    August 30, 2019 @ 4:58 am

    […] The basic frame structure is defined in the IEEE 802.3 standard. However several optional formats are being used to extend the protocol’s basic capability. The Early versions of Ethernet were comparatively slow. The latest versions of Ethernet operate at 10 Gigabits per second. This is the fastest version of Ethernet. At the data link layer, the frame structure is almost the same for all speeds of Ethernet. […]


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