互联网新兴技术

Internet Emerging Technologies

This course will enlighten your understanding of what the Internet is and how it works.

韩国延世大学

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关于此课程: Every information service is connected through the Internet. If your work is any bit related to information, there is no excuse, you have to know what the Internet is and how it works! The relation of information and the Internet is equivalent to the blood and blood vessels of our body, which we have been using and will be using every day of our lives.

This course will enlighten your understanding of what the Internet is and how it works. IP (Internet Protocol) IPv4 and IPv6 keep the Internet alive by enabling remote computers to communicate through various inter-connected networks through “inter-networking” technology, which is where the name “Internet” came from. TCP and UDP are used by the end devices (e.g., computers, smartphones, servers, clouds) that are communicating to connect applications/services across the Internet. The details of IPv4, IPv6, TCP, UDP, and Internet operations are covered in this course.

授课大纲

WEEK 1
Internet Operations
The lectures first cover Internet Operations based on an example of using IPv4, TCP, Ethernet, PPP, and Wi-Fi. The lectures then explain the TCP/IP 5 layer model, which includes the layer 5: Application layer, layer 4: Transport layer, layer 3: IP (Internet Protocol) layer, layer 2: Network Access layer, and layer 1: Physical layer.

WEEK 2
TCP & UDP
You have been using TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) your entire life, and now it is time to know what it is and how it works. First, the lectures cover TCP, starting with the TCP Header, and covers the fields Source Port, Destination Port, Checksum, Data Offset, Push function, and Urgent Flag & Urgent Pointer. The TCP lectures also include details on TCP Network Operations, TCP Connection Establishment, Window Flow Control, and Congestion Control. Next, the details on UDP (User Datagram Protocol) are presented, which include UDP Header, Source Port, Destination Port, Length, and Checksum fields.

WEEK 3
IP
The lectures cover the essential functions of IPv4 and IPv6, which are used in the Internet today. The lectures first focus on IPv4 inter-networking functions and then provide details on the IPv4 Header, which include the fields of DS (Differentiated Services), ECN (Explicit Congestion Notification), Total Length, Identification, Packet Fragmentation, TTL (Time to Live), and Source & Destination IPv4 Addresses. Next, details on the IPv6 protocol are provided, which include the IPv6 Packet Header fields of DS, ECN, Flow Label, Hop Limit, IPv6 Address Types & Address Format, and IPv6 Jumbogram Extension Header. Then IPv6 PMTUD (Path MTU Discovery) techniques are presented.

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