Transcript 投影片 1
Lesson Anatomy on Chapter 7 1a Overview of the key concepts Focus on the IEE802.3 for Ethernet. (1) Types of media carrying data (2) Network Interface Card with 2 addresses (3) Subnet Masks (4) Future Development of Ethernet with Gigabit with increased of data transmission speed. (5) Performance 1b Related Chapters Chapter 4 focus IP address Chapter 6 focus on network architecture and topology. Pre-requisite for teaching Chapter 7 2 The scheme of work Use FreeMind softeware to illustrate the scheme of the work used in the text book Weaknesses identified: (1) Insufficient information provided: e.g. IP addresses assigned by 3 different agents. (2) Lack of effort to visualize abstract concepts: e.g. no provision of tracing packets to show how packets are actually transmitted. (3) Very limited information on the Wireless LAN which is of more important in terms of growing popularity and economy. 3 Sub-topic delivered in a double-lesson Expand the lesson on Network Interface Card: (1) structure of NIC (2) use software to trace packets (1) Use Freemind software to create concept mapping. (2) Convert IP address to base 10 for easy of human reading of the size of the network (3) Use of subset mask to determine IP address belonging to the same subnet. 4 Strategies to teach the sub-topic Bloom taxonomy is used. Stress on high order intellectual synthesis component. Students are required (1) to explain why IP address is not normally represented in base 10, (2) to be able to divide a huge number into different meaningful groups. LAN Standards The Institute for Electrical and Electronic Engineers (IEEE) http://standards.ieee.org/getieee802/portfolio.html Concept Mapping of Chapter 7 Concept Mapping of Chapter 4 Concept Mapping of Chapter 6 Concept Mapping of Subtopic on the Interface Card Network IP Address Registration IP address blocks are register by ARIN in the Americas, RIPE in Europe, and APNIC in Asia-Pacific. Find IP Address in XP Find IP address: ipconfig /all Visualize Packet Tracing http://network-tools.com/ Parameters of Packet Tracing A Result of Packets Tracing Trace completed. Convert IP Address to Base10 Number Convert IP to Base 10 - IP addresses can be converted to a "base 10" number. A standard IP is "base 256." To convert 66.46.55.116 to base 10 the formula is: 66 x (256)3 + 46 x (256)2 + 55 x (256)1 + 116 = 1,110,325,108 The meaning of this figure implies that the number of 1,110,325,108 can be divided into 4 groups. Relevant Teaching and Learning Resources IEE standards http://standards.ieee.org/getieee802/portfolio.html Visualize tracing of packets: http://network-tools.com/ Bloom’s Taxonomy: http://www.officeport.com/edu/blooms.htm