What is OSI Layer 4 & Ping Explained | CCNA Mock Interview Questions! #ccna #networking #layer

Added: 2026-05-29

[00:00:00]So, when we ping, from let's say Windows, how many packets it sends? From Windows, it will send four packets. By default, it sends four four packets. Size of each packet? Size of each packet was 32 bits. Bits or bytes? 32 bits. IP address means 32 bits. Okay. So, like as you told that when we ping, so first our packet will be generated, then ICMP packet will be sent. So, if we talk about the layer four of the OSI model, so what happens in the layer four? What are the information will be added in the layer four? Actually, from the layer three, we're getting the data to the layer four. Layer four, we can call it as a transport layer. In this layer, it should be ensured there is no error. If there is no error in that data, and there is no duplicate of that data. And also, mainly in this layer, it uses two protocols. One is TCP, and another one is UDP. Based on these two protocols, the data should be transferred.

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