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What does “OSI” stand for? Open Systems Interconnection. It is a conceptual model that describes how network communication should happen between devices in a network.

List the 7 layers of the OSI model and what each one is responsible for. Physical Layer Data Link Layer Network Layer Transport Layer Session Layer Presentation Layer Application Layer

Which layers are the “hardware layers”? What does that mean? The first two layers of the OSI model, namely the Physical Layer and the Data Link Layer, are commonly referred to as the "hardware layers."

Which layers are the “software layers”? What does that mean? The higher layers of the OSI model, namely the Network Layer, Transport Layer, Session Layer, Presentation Layer, and Application Layer, are commonly referred to as the "software layers."

What Is Wireshark and How Is It Used? What is Wireshark? Wireshark is a popular open-source network protocol analyzer that is used to analyze and troubleshoot network traffic

What is a packet? In computer networking, a packet is a unit of data that is transmitted over a network from one device to another. It is a small piece of data that carries information such as the source and destination addresses, packet sequence number, protocol information, and the actual data being transmitted.

What 3 high-level things does Wireshark accomplish? Network Traffic Capture Network Protocol Analysis Network Troubleshooting