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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. Carrier Sense Multiple Access (CSMA) - Networkustad
    June 2, 2019 @ 11:57 am

    […] Sense Multiple Access/Collision Detection (CSMA/CD); is the most widely used transmission method in half-duplex Ethernet networks.  On Ethernet, any device can attempt to send a frame at any time. Each device […]


  2. Duplex and Speed Settings on Switch - Networkustad
    June 5, 2019 @ 6:25 pm

    […] Duplex and Speed settings are the most basic settings for each port of a switch. By default, Cisco switches will auto-negotiate the speed and duplex settings. There are possibility of mismatching of duplex and speed setting between the switch port and the connected devices for example a computer or another switch. There are two types of duplex settings used for communications on an Ethernet network. Full-duplex communication both ends of the connection can send and receive simultaneously but in the half-duplex only one end of the connection can send at a time. […]


  3. Network Interface Card (NIC) and Ethernet Protocol » Networkustad
    August 29, 2019 @ 3:04 pm

    […] uses in half-duplex Ethernet LANs to detect and resolve collisions. Today’s Ethernet LANs use full-duplex switches, which allow multiple devices to send and receive simultaneously with no […]


  4. David Mullane
    August 18, 2020 @ 7:36 am

    You have shared a great article to understand all three types of Transmission Modes. Comparison shown in the article is really of a great knowledge and I would love to share it further. Thanks and keep sharing!!!


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