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CSST COURSE 1.0


Q1. WHAT IS A ADDRESSING.

Network addressing is like a two-part delivery system:

 Logical Addressing (IP): This is like your permanent address (e.g., 192.168.1.1) that lets data find your device anywhere on the internet.

Physical Addressing (MAC): Think of this as a unique ID for your device's network card (AA:BB:CC:DD:EE:FF) used for local delivery within your network.


Q2. WHAT IS A PACKET AND FRAME .


Packets:

Layer: Network Layer (Layer 3)

Content: The actual data you want to send, like an email, a video, or website information.

Addressing: Contains logical addresses (IP addresses) to identify the sender and receiver on the network.

Size: Can vary depending on the data type, but generally larger than frames.

Travels across networks: Packets can travel across different networks, like the internet, as they are routed based on IP addresses.

Frames:

Layer: Data Link Layer (Layer 2)

Content: The packet wrapped with additional information for local delivery. This includes the packet itself, plus a header containing the physical addresses (MAC addresses) of the sender and receiver devices.

Addressing: Uses physical addresses (MAC addresses) of network devices for local delivery within a specific network segment (e.g., your home network).

Size: Fixed size depending on the network technology (e.g., Ethernet frames are typically 1500 bytes).

Travels within a network segment: Frames are used to deliver data within a limited area like a local network and don't handle routing across different networks.

Speed test:

Checks how fast you can get water from the outside faucet (internet) into your house (device). This reflects how fast you download and upload things.

Iperf: 

Tests how fast water can move through the pipes inside your house (LAN network) between, say, your kitchen sink (one device) and the washing machine (another device).



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