Overview of Addressing - Introduction to Internet - Internet Communication Engineering

TL;DR

This video discusses the three types of addressing used in the TCP/IP model: physical, logical, and port addressing.

Transcript

hallo friends so today we are going to discuss about the different types of addressing that is used in that a CPI P okay now let us discuss about the different types of addressing so there are three level of addressing that is used in the tcp/ip model the first is a physical addressing second is a logical addressing and third is port addressing now... Read More

Key Insights

• 🍻 The TCP/IP model consists of five layers: physical, data link, network, transport, and application.
• 😒 Physical addressing uses a 6-byte physical address assigned by the data link layer.
• 😒 Logical addressing, done at the network layer, uses IP addresses to identify hosts connected to different networks.
• 🚙 Port addressing assigns port numbers for process-to-process communication at the transport layer.
• 🚙 Well-known ports, such as port 80 for HTTP and port 25 for SMTP, are predefined for specific protocols.
• 🛂 Resisted ports and dynamic ports are used for temporary processes and are not controlled by a specific organization.
• 💱 Physical addresses change when switching networks, while logical addresses remain the same.

Questions & Answers

Q: What are the three types of addressing in the TCP/IP model?

The three types of addressing in the TCP/IP model are physical addressing, logical addressing, and port addressing.

Q: How is physical addressing done in the TCP/IP model?

Physical addressing is done at the data link layer and uses a 6-byte physical address to identify a node on a LAN or WAN. It is also known as a link address.

Q: Why is logical addressing necessary in the TCP/IP model?

Logical addressing is necessary for universal communication as physical addresses are not adequate when connecting different networks. IP addresses provide a unique identity to each host and remain the same regardless of the underlying physical network.

Q: What is the purpose of port addressing in the TCP/IP model?

Port addressing is used for process-to-process communication. It assigns port numbers to label different processes running on a computer, allowing data packets to reach the appropriate process.

Summary & Key Takeaways

• The TCP/IP model consists of five layers: physical, data link, network, transport, and application.

• Physical addressing, done by the data link layer, uses a 6-byte physical address to identify a node on a LAN or WAN.

• Logical addressing, done at the network layer, uses IP addresses to uniquely identify hosts connected to different networks.

• Port addressing, done at the transport layer, assigns port numbers to label different processes for process-to-process communication.