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Chapter_4 - Todd Lammles CompTIA Network Click to edit...

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Click to edit Master subtitle style Todd Lammle’s CompTIA Network+ Chapter 4: Ethernet Instructor:
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Chapter 4 Objectives 2.6 Categorize LAN technology types and properties Types: Ethernet 10BaseT 100BaseTX 100BaseFX 1000BaseT 1000BaseX 10GBaseSR 10GBaseLR 10GBaseER 10GBaseSW 10GBaseLW 10GBaseEW 10GBaseT Properties CSMA/CD Broadcast Collision Bonding Speed Distance 2
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Network Communication Basics 3
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Bob Communicates to Sally Here’s the output from a network analyzer depicting a simple name- resolution process from Bob to Sally: Time Source Destination Protocol Info 53.892794 192.168.0.2 192.168.0.255 NBNS Name query NB SALLY <00> Because the two hosts are on a local LAN, Windows (Bob) will broadcast to resolve the name Sally (the destination 192.168.0.255 is a broadcast address). Let’s take a look at the rest of the information: EthernetII,Src:192.168.0.2(00:14:22:be:18:3b),Dst:Broadcast(ff:ff:ff:ff:ff:ff ) Before the name is resolved, the first thing Bob has to do is broadcast on the LAN to get Sally’s MAC address so he can communicate to her PC and resolve her name to an IP address: Time Source Destination Protocol Info 5.153054 192.168.0.2 Broadcast ARP Who has 192.168.0.3? Tell 192.168.0.2 Next, check out Sally’s response: Time Source Destination Protocol Info 5.153403 192.168.0.3 192.168.0.2 ARP 192.168.0.3 is at 00:0b:db:99:d3:5e 5.53.89317 192.168.0.3 192.168.0.2 NBNS Name query response NB 192.168.0.3 4
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Collision and Broadcast Domains The term collision domain is an Ethernet term that refers to a particular network scenario wherein one device sends a packet out on a network segment, thereby forcing every other device on that same physical network segment to pay attention to it. Ethernet uses both Data Link and Physical layer specifications.
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  • Spring '10
  • NA
  • Gigabit Ethernet, 10 Gigabit Ethernet, Source Destination Protocol, Destination Protocol Info, IEEE Ethernet Standards

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