Aoraki Digital Technologies/Level 2/DT 2.50 AS91377

 Knowledge Grid for DT 2.50 (AS91377)

Achieved	Merit	Excellence
The student has demonstrated understanding of local area network technologies.  Describe Purpose of a LAN (hosts, devices (dual functions), examples of LAN use, types of resources shared, information that can be accessed using a LAN, purpose of LAN components) OSI model TCP/IP bandwidth (requirements and uses of particular bandwidths) data transmission modes e.g. duplex IP addressing including classes DHCP NAT ICMP LAN architecture (ring, star, ethernet token ring, DDI)	As achieved plus: compare and contrast client-server and peer-peer LANs with reference to network administration, complexity, services/backups,  explain the OSI layers and TCP/IP layers IP addressing in detail (static/DHCP) MAC addresses NATing - advantages advantages and disadvantages of cable, fibre, wireless in terms of bandwidth, location, security, reliability, set up, suitability Ethernet access control	As merit plus: IP addressing schmas / classes and public/private use rationale for IP6 subnet masks troubleshooting network config ipconfig/ifconfig How access control manages traffic e.g. CSMA/CD

Teacher Information

Teaching Ideas

• Construct a LAN from 3 or more machines using either windows or linux 
  • IP addressing including static, DHCP, netmasks, public private addresses, MAC addresses, NAT
  • Components including switch, network card, hub, fibre, cable
  • Add a wireless router and configure it (connect LAN to the WAN port and configure NATing so that addresses are given out by the router are in a different range to the school network)
• Use wireshark to capture packets and identify ICMP and TCP/IP traffic - this could link in with both DHCP and ICMP and TCP/IP work.
• Use a group wiki to collect information resources for the final assessment
• Use a forum to discuss the purpose of a LAN (this could be teacher led and run as homework over one week)
• Use a forum to discuss dynamic and static addressing (this could be teacher led and run as homework over one week)
• Use a forum to discuss the advantages and disadvantages of copper/fibre/wireless (this could be teacher led and run as homework over one week)
• Photograph the components of a LAN (hardware and software), label and describe functions and place in OSI model in a group wiki/google doc 

Assessment

This standard is assessed using the NZQA resource "Local Area Networks". Additional resources - learner checklists etc are below:

• Check List for 91377 "Local Area Networks"

• Template for writing the assessment report