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OSI Physical layer CCNA Exploration Semester 1 Chapter 8
OSI Physical layer ,[object Object],[object Object],Application Transport Internet Network Access Application Presentation Session Transport Network Data link Physical TCP, UDP IP Ethernet, WAN technologies HTTP, FTP, TFTP, SMTP etc Segment Packet Frame Bits Data stream
Physical layer topics ,[object Object],[object Object],[object Object],[object Object]
Physical layer tasks ,[object Object],[object Object],[object Object]
Physical layer standards define: ,[object Object],[object Object],[object Object],[object Object]
Physical layer standards ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Encoding and signalling ,[object Object],[object Object]
NRZ - non return to zero ,[object Object],[object Object],[object Object]
NRZ problems ,[object Object],[object Object],[object Object]
Manchester encoding ,[object Object],[object Object],[object Object]
Manchester encoding ,[object Object],[object Object],[object Object],[object Object]
Two steps ,[object Object],[object Object],[object Object],[object Object]
Advantages of group and code ,[object Object],[object Object],[object Object],[object Object]
100 Mbps Ethernet on UTP ,[object Object],[object Object],[object Object]
100 Mbps Ethernet on fibre ,[object Object],[object Object],[object Object]
Gigabit Ethernet on UTP ,[object Object]
Digital Bandwidth ,[object Object],[object Object],[object Object],[object Object]
Throughput and Goodput ,[object Object],[object Object],[object Object],[object Object]
Media ,[object Object],[object Object],[object Object]
Coaxial cable ,[object Object],[object Object],[object Object],[object Object]
Connectors for coaxial cable
Coaxial cable ,[object Object],[object Object],[object Object],[object Object]
Unshielded twisted pair (UTP) cable ,[object Object],[object Object],[object Object]
RJ45 connectors Plugs on patch cables (crimped) Sockets to terminate installed cabling (punch down)
Straight through cable ,[object Object],[object Object],[object Object],[object Object]
Crossover cable ,[object Object],[object Object],[object Object],[object Object]
Rollover cable ,[object Object],[object Object],[object Object],[object Object]
UTP cable ,[object Object],[object Object],[object Object],[object Object]
Shielded twisted pair (STP) ,[object Object],[object Object],[object Object]
Noise ,[object Object],[object Object],[object Object],[object Object]
Avoiding noise problems ,[object Object],[object Object],[object Object],[object Object]
Fibre optic cable ,[object Object],[object Object],[object Object],[object Object]
Single mode fibre optic ,[object Object],[object Object],[object Object],[object Object]
Multimode fibre optic ,[object Object],[object Object],[object Object],[object Object],[object Object]
Fibre optic connectors Straight tip (ST) connector single mode Subscriber connector (SC) multimode Single mode lucent connector Multimode lucent connector Duplex multimode lucent connector (LC)
Which cable for the LAN? 100km or 2km No noise problems Within/between buildings More expensive Harder to install Max 100 m length Noise problems Within building only Cheaper Easier to install Fibre optic UTP copper
Testing cables Fluke NetTool for twisted pair cables Optical Time Domain Reflectometer (OTDR) for fibre optic cables
Wireless ,[object Object],[object Object],[object Object],Wireless access point Wireless adaptor
Wireless problems ,[object Object],[object Object],[object Object]
Wireless networks ,[object Object],[object Object],[object Object],[object Object]
Labs & Activities * If no previous Packet Tracer experience, else strongly recommended Mandatory* 1.2.4 PT Review carefully 1.3.3 Lab Mandatory 1.3.2 PT Mandatory 1.3.1 Lab Detail Type
 

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Mod8

  • 1. OSI Physical layer CCNA Exploration Semester 1 Chapter 8
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  • 24. RJ45 connectors Plugs on patch cables (crimped) Sockets to terminate installed cabling (punch down)
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  • 35. Fibre optic connectors Straight tip (ST) connector single mode Subscriber connector (SC) multimode Single mode lucent connector Multimode lucent connector Duplex multimode lucent connector (LC)
  • 36. Which cable for the LAN? 100km or 2km No noise problems Within/between buildings More expensive Harder to install Max 100 m length Noise problems Within building only Cheaper Easier to install Fibre optic UTP copper
  • 37. Testing cables Fluke NetTool for twisted pair cables Optical Time Domain Reflectometer (OTDR) for fibre optic cables
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  • 41. Labs & Activities * If no previous Packet Tracer experience, else strongly recommended Mandatory* 1.2.4 PT Review carefully 1.3.3 Lab Mandatory 1.3.2 PT Mandatory 1.3.1 Lab Detail Type
  • 42.