Add answer to Spine & Leaf network question

README.md

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 <summary>Explain Spine & Leaf</summary><br><b>
+"Spine & Leaf" is a networking topology commonly used in data center environments to connect multiple switches and manage network traffic efficiently. It is also known as "spine-leaf" architecture or "leaf-spine" topology. This design provides high bandwidth, low latency, and scalability, making it ideal for modern data centers handling large volumes of data and traffic.
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+Within a Spine & Leaf network there are two main tipology of switches:
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+* Spine Switches: Spine switches are high-performance switches arranged in a spine layer. These switches act as the core of the network and are typically interconnected with each leaf switch. Each spine switch is connected to all the leaf switches in the data center.
+* Leaf Switches: Leaf switches are connected to end devices like servers, storage arrays, and other networking equipment. Each leaf switch is connected to every spine switch in the data center. This creates a non-blocking, full-mesh connectivity between leaf and spine switches, ensuring any leaf switch can communicate with any other leaf switch with maximum throughput.
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+The Spine & Leaf architecture has become increasingly popular in data centers due to its ability to handle the demands of modern cloud computing, virtualization, and big data applications, providing a scalable, high-performance, and reliable network infrastructure
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