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Network Fundamentals

Understand how data moves

Network fundamentals cover how packets are addressed, switched, and routed using IP, subnets, and ports, enabling applications to communicate reliably across local and wide networks.

Addressing

IP addresses and subnets define where packets should go and how they are grouped.

Transport

TCP provides reliable streams; UDP provides lightweight datagrams for latency-sensitive uses.

Routing and Switching

Routers direct between networks; switches forward frames within a LAN based on MAC tables.

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