How do we send data across computer networks

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How do we send data across computer networks Network Addressing How do we send data across computer networks

MAC Addressing Every Network device has a hardware address that's known as a MAC, for Media Access Control. Where IP addresses are associated with TCP/IP (networking software), MAC addresses are linked to the hardware of network adapters. A MAC address is given to a network device when it is manufactured. It is hardwired or hard-coded and is unique to it.

IP addressing IP or Internet protocol is a rule for assigning a address to all computers on a network. A typical IP address looks like this 192.168.1.1 IP addresses are used by routers to locate computers on a network. When you join a network you are given a IP address

Breaking it down If we consider a ordinary letter which we would post using traditional snail mail. How does it work? The letter is written then placed into a envelope. The name of the recipient is written first. Next you write the house number and street. Then the town and City. Finally the country. Don’t forget to add a stamp On the back you write the senders address

How does that relate to network addressing? The letter is the data to be sent The envelope would be the packet The recipient name would be the MAC address The street name and town would be the local or LAN IP address The city and country would be the external IP address. The stamp would be the quality of service. The senders name would be the address to send an acknowledgment of receipt or request to resend the data.