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  1. Data link layer - Wikipedia

    • The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between nodes on a network segment across the physical layer. The data link layer provides the functional and procedural means to transfer data between network entities and may also provide the mean… See more

    Function

    The data link provides for the transfer of data frames between hosts connected to the physical link. Within the semantics of … See more

    Sublayers

    The data link layer is often divided into two sublayers: logical link control (LLC) and media access control (MAC).
    The uppermost sublayer, LLC, multiplexes protocols running at the top of the data link layer, and … See more

    Services

    The services provided by the data link layer are:
    • Encapsulation of network layer data packets into frames
    • Frame synchronization
    • In the logical link control (LLC) sublayer: … See more

    Error detection and correction

    In addition to framing, the data link layer may also detect and recover from transmission errors. For a receiver to detect transmission errors, the sender must add redundant information as an error detection code to … See more

    Protocol examples

    • ARCnet
    • ATM
    • Cisco Discovery Protocol (CDP)
    • Controller Area Network (CAN)
    • Econet… See more

    Relation to the TCP/IP model

    In the Internet Protocol Suite (TCP/IP), OSI's data link layer functionality is contained within its lowest layer, the link layer. The TCP/IP link layer has the operating scope of the link a host is connected to, and only concerns it… See more

    See also

    • ALOHAnet § ALOHA protocol
    • ODI
    • NDIS
    • SANA-II – Standard Amiga Networking Architecture, version 2… See more

     
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  2. Examples of Layer 2 technologies include1234:
    • IP, IPX, and AppleTalk
    • Rollups on Ethereum
    • The Lightning Network on Bitcoin
    • Side Chains
    • State Channels
    • Layer-2 cryptos such as MATIC, IMX, OP, ARB, and LRC.
    Learn more:
    IP, IPX, and AppleTalk are examples of this layer. The Data Link Layer is the second layer of the OSI model. This layer defines how networking components access the media and what transmission methods they use. This layer has two sub-layers: MAC and LLC.
    www.computernetworkingnotes.com/ccna-study-gu…
    Examples of layer 2 projects include "rollups" on Ethereum and the Lightning Network on Bitcoin. All user transaction activity on these layer 2 projects can ultimately settle back to the layer 1 blockchain. layer for layer 2s.
    ethereum.org/en/layer-2/

    Types of Layer 2 Blockchain Scaling Solutions

    • Rollups Instead of processing transactions individually, bundles of transactions can be “rolled up” into a single transaction, vastly increasing the number of transactions that can be processed at once. ...
    www.investopedia.com/what-are-layer-1-and-layer …
    In this guide, we discuss everything there is to know, including the different types of layer-2s, advanced solutions, and the impact on gas fees and transaction speeds. This guide highlighted OKX, Kraken, and Coinbase as ideal for buying layer-2 cryptos such as MATIC IMX, OP, ARB, and LRC.
    beincrypto.com/learn/layer-2-scaling-solutions/
     
  3. The OSI Model – The 7 Layers of Networking Explained in Plain …

     
  4. What is a Layer 2 Network? Types, Examples, Use …

    Dec 11, 2023 · Here, we explore some of the most popular Layer 2 solutions that are currently in use. 1. Lightning Network (Bitcoin): Overview: The Lightning Network is a prominent Layer 2 solution for Bitcoin, enabling faster and …

  5. Layer 1 vs Layer 2 vs Layer 3: A Comprehensive …

    Feb 28, 2024 · Layer 2, also known as the Data Link Layer, focuses on the reliable transmission of data frames between nodes connected by a physical layer. It ensures error-free and efficient communication within a local network …

  6. OSI Seven Layers Model Explained with Examples

  7. Layer 2 Protocols | Types of Network L2 Protocols - ManageEngine

  8. Data Link Layer | Layer 2 - The OSI-Model

  9. Layer 2 Protocols: A Comprehensive Guide for 2024

    Apr 22, 2022 · Layer 2 protocols, also known as network L2 protocols, are popular communication protocols used by the Data Link Layer devices for transferring data to a wide area network or local area network.

  10. Layer 2 Protocols Ultimate Guide for 2024 - Comparitech

    Dec 2, 2024 · Layer 2 protocols, such as Ethernet, VLANs, and Spanning Tree Protocol (STP), ensure reliable data transmission, prevent loops, and manage traffic within local area networks (LANs). This guide provides an in-depth …

  11. What is Layer 2 Network? | Networking Core Concepts

  12. Overview of Layer 2 Switched Networks and …

    Jul 23, 2011 · Basically what I am going to explain in this article is, how inter-communication happens in data network between two devices at Layer 2 (Switching). Physical Addressing and Switching. Network is a group of devices …

  13. Network Layers Explained: OSI & TCP/IP Models [with examples] …

  14. 12 Best Layer 2 Projects To Look Forward To In 2025

  15. What Is a Layer 2 Network? - Data Link Layer Networking

  16. OSI Model – Practical Networking .net

  17. Layer 2 network

  18. Layer 2 Networking | Junos OS | Juniper Networks

  19. The Basics of Layer 2 Network Mapping - Fortra

  20. Layer 2 Switch - How it operates, when to use it - Network …

  21. 7 Popular Layer 2 Attacks - Pearson IT Certification

  22. Understanding the 5 UX design layer types - LogRocket Blog

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